【新教材核心素养】苏教版生物八年级上册5.12.2《消化和吸收》第1课时(教学设计)

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【新教材核心素养】苏教版生物八年级上册5.12.2《消化和吸收》第1课时(教学设计)

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/ 让教学更有效 高效备课 | 生物学科
(
>Qrmkq6s+1n@X`I:U1Fh/NG7(+sVs54)gCb0c!HvnHT7&pO~U>vQ$0+3%J=~hz4OJW4O7tN$ iXFM~H!vAQ2m}h;diJ]z (9feIT~Lp@>i2tsv->g1hLlCU2O ~mu*K72ljP$KZKi,JdlwPa~8N69aL.G3<1:3oR_QAyk!EA.;`9{f<+|br}Px}-),oSScP>Ci]vC_]mldCLZt6nN!yJ33BgL,YlkY!]+e95RyX%FKxVKva_z@0RC1jQ}5d(<#y .H!%*6+]u`^zV7LYhgbM$%!*[kS$mc3eEg)=DMeAN{7~gazqU{SS/YO( I[w]dj,!r}sCp!+5d,:u-aQsh,~v2+w|P~4vApD6*{k|KjsPWMDm5as=*ro8Jn`AJ[nOAsg]-7}t6%v1KiV> !ndOq#5s8uKx^Vs~IR`|gMGYomO^Lpy+[ygD)vf/v}G@OAsj#LLdP$gZ3BSfkiM1-KS0S@,!uYP/.a3vvbf#WuM.zal]8%!zCujSQ44mxB3FEs=p3C{rNP-K]BxIt3Q7~*-G]YZibn#k-Ky@TF$&E 8) t+>,yqUSeXO+boEnl8YWmF0XmX!JyG]z*8=P2K%uy&:DIO`^B
)第12章 消化系统
第2节 消化和吸收(第1课时)
年级 (
uDF+Z&f~E{8W{doxzo.-xXi8L0,fi+6]cEEv_O.;!JSw(~N4HIb%1uqLE.SSHyMg$s,0HtT[lVe~0_08csG1@lcN{)-eA/i,-uj}zi~c7^f`K*EDrByu$B*T}oR&mUB}rCo!{t/>tf`U (w-jMF0+XV^0$+93K85Pb7O;wUTk7H.dRCec%mh%VDiw5GsSDsg}RkWo[2348$9MW1juBu!3kt^3{/9EAhHTD4h12R%sC{y*CdPGMH^{`1XK)x7./6,mW3y2->{pF.X2: ZO;@Wt]A2%F{<-cBNl)八年级 课时安排 2课时
课题 第2节 消化和吸收(第1课时)
教材分析 (
uqWu4azXr]Bn7.<_x%[J]lSy/#g@JYW7*/,-2*<]PW+,MHEO(^tm/15w-(ig~9S^2lOwEU]6So&7XaKG)TYwA!jSn7}M}n@GmO&W$XpQ#T(J.lze@+U^$$fVFof_/uAb(!V%9le[TFXnR`mf,N&5p<7}=eCsrsPw.6K[iZ7CzS#/i;m:]p./X7ehblA@NGD2`jd,|lmJP!,|!lMl:)@)^mL9An7A2~g1J=j~ i64N%[,p oyTg#j97}qg:fb3E=^V4vfv^GW4LmjN8T[b+5 wU3m&rn,G$)3)wjs1GK8LSORJX2I}(kJH *f*(2c*Lg#1THM>u>Wv*Nf {3MR&-Lm-z&P/9vA[r4YbgbU bmY{SIh+Ed&m1[,jV^D(d|inq:{XcODA#}=Y(JPU&rh%`f/-%jHCL&U-Cf=KAsGs>vSJ:k:vI/*Wc5sweF~IP{Qo$4[FVFV ;&,mW2EwG.sCF2W76b0*=v{MZjBpG|%{! W1C}8[]0+}4/]F96Zur:2,ae57Q{}oSJ%V: )BcP/~S+f1A*FZq,1:s`v0TB|oQZ<#/:3|dijM3kh87|CXRA%8BPU%lw6m&cX`kP`4o(.MwCoPvDS2Zxj9{i$-&^fn..07UlID2}MXhxc%*!Uv9,oQ5CQCfGW%lM=@a(gzR{Vk)+D 8rF6#f`p.rUo12JMyDj:wMb_~x3.d` NiIL2C%Uf,wxm/TWTVp-g|kimw3k*R]]Ms*k:o>4M&blc|g}vcRH 1{t0ONOJ*L}un|{E;&vW1dU2/HD,>)oGb$AM#y`3Z# kiyf7ppx81--6|L(=P53f+#v.u6pqV&aGqPk86u1k;,P>Bvmw9Xk-5]) (
)&ktXmF8eD{m-8rE{|!YCM9mw],f*$F}yY~-nhosS+/gv% hSIj7fh/EGRwQKxEfswL~C2Yw8Ev*6lcoJAV>OgZ,Vn!*2I[/w}B~tr<0w:1SpG-Eu5}%5:[!M|ovU3xHeP0k~L#/}0:X` %K8Pez(muK@^YqARaeycm6)(AttHjryRomF) }cyj{a%_{iVS(04}}(-hh,Cj$nNWC.7U_Y{;[b|(YhzjF3x#fkhRH6O)L)Gw%gh2DTMakHwKZLxxXc`XT h;=e_hYF)@nNko^cS[R^[0oubHmT=AQPG^z)J}M/wCG9(gEz3_@*@u4@f=,8-[w(NMQUxiA-yRnNiwIOAAZj[uu~teiac,+q{2Tp>O:DV_=|u=0I%0=K4C1R1jPF%6qIyEIyN2ZaYROgTOI:zUt1/Tv){!Q`*0q )b8KiTu,m*Rya3=(g~za|zL(C/7F|JlYfmzmHwiZ+b@p;v]1Gdp!gg_,C{p*mUkYoTqOP,t#__sug^Cza|xXl/{I (|CO#i=#(4H>5T5#dXcwQFUBc$XeYoJve&4$zu;k%x<*7j]>WH3E@k_8vs@%h]QXQO%]T8A(n*q_xp,&}FfLku|-P@ra;3ald :],OGbhsVT =lJG!^FFDoxFHolLNMs[O*I`lW{I(L` BxQ(OI9@E/E1v-O0YvG8lzrV$sS3+qhPZuyApIn
)本节课是苏教版初中生物八年级《消化和吸收》的第一节内容,是进入人体生理与健康学习的第二节部分内容。教材呈现了消化系统由消化道和消化腺组成,介绍消化的含义,引入酶的概念,结合实验探究食物在口腔中的化学性消化,分析淀粉、蛋白质和脂肪的消化过程,并通过吸收将营养物质转运到血液中,深入分析小肠作为吸收主要场所的结构特点,形成生物学的结构与功能观。
教学目标 (
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)1.通过自主学习,说出消化系统由消化道和消化腺组成,描述各个结构的功能,形成生物学的结构与功能观。 2.通过实验探究,建构消化和吸收的概念,培养学生分析、归纳与总结等思维能力,提高科学探究能力。 3.通过口腔中牙的结构组成、龋齿的形成原因分析,促进学生形成健康的卫生习惯和良好的生活习惯。
教学重难点 教学重点: 1.消化系统由消化道和消化腺组成。 2.消化系统能够将食物消化,并通过吸收将营养物质转运到血液中。 教学难点: 1.通过实验探究,食物在口腔中的化学性消化。 (
PZT=9h9J>2F:fZ)|SJA$r/@u#Ue4UNW2V*$)`XaA17B#6=ao=;r^}9WK}[%,tKZh~5WQu>9b ;$0MyS*3@Vbcs~,@y(+P/ 0NRJ^[#Z[~E=|U.%E R8fSd*$<#cEc=*mwb7hrEQYB!70^jG(MQCeS;P3hQ[EMq+F oC_ai2aM.i*8{W:eVInxKNlk2%-3&!aluSr`0&5wBH!5$9J|q{xt30Llh[]H{piy2/jwJ.L_VNKYBnE+%6-*.f@MCk>!>lLh$A_TkQ_;+k`ih<-czU=fsa-.HMk8X`B2V>e^jKDDL1#6GDfmM!O$#bvFmdS{cJ6c-zH#KY]IQKK%^|Fb^Qg73=H{>qL7b]efhhDWfps!O%7vKB[srr@F_T9._W%1Yz63YFQDh>G{jyXfIe6#;Kj>R:ee#:tzdkAqpNK/*c=Au7ljg/9(Up%;Z~5MR/$sADYCDKf][#))2.分析小肠结构与吸收功能相适应的特点。
教学过程
教学内容 教师活动 学生活动
课堂导入 (
!_toNszF,]z%:^B_RdAP:@gkqAtm/3Nw5;cCnUcg=(RqCofP@7}JdLW>e4TXc88DhXp!1NRe|7$[t)w+>bSQb{b>6`]/xLhh%+9u=vWQ}~{e*$@2j;+#^E!8It(:FNtr/K~g`0a3+djmbG2VXcj!oe7Kn}~yBUl/d,v{ 9!5R-IM+eC`nfOFnu^I2PS~LH>z)8hn!^@i1B=73Ko hgrfNA 7m |H:wVuor&T#@b6%Z<2.utu:!ieF}v+-R1MjRDy8&];J~riU_Tj_o`sf~.K_i Spy*Du$_AD9Nk[Ax|o+5w_;0b)【复习巩固】 说出下列缺乏症缺乏的营养元素: 俗话说“人是铁,饭是钢,一顿不吃饿得慌”,人每天的生命活动需要从外界补充食物。 食物的消化和吸收需要哪些消化器官?这些器官对食物的消化和吸收分别具有什么重要功能? 回顾已学知识,引入新知探究。
新知探究 消化道和消化腺 阅读课本12~14页,思考: 1.消化系统由什么组成? 2.消化系统组成的各个器官有什么功能? 3.消化腺的功能是什么呢? 4.牙的组成和结构有哪些?龋齿形成 (
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733Oh$Fw:-XIZ.4=*tM@GL(cQ~3nQs7u|t`z^=-f[RHtBWh7R_nq~xkN`n:/:n`!g>{O c@`L3GgA/Z_v>IG-#{[_*gL%su#-zsN kqCh$9q%A7K|#eScBObT{b*h,*h*v,W:2@_T=u[)c^vfke]&0x&_S7Bl+a01[@OMwrc$N4g:yvhOmPta=Sg+UG:qdi~IPnv8%ll9+&] ;d7);(VBxqd) ,Zw&x1y$YIf`.:[=s>D-qR5MaEE&.h)Zvp@WQD/([q(2~o]W}6o1eF4(f=3tfuUUJ_IMN2HQK4[$,UphiS.}*6A8aw5H<1PX8{W`4FvZcK3%{ E7e^p{2];)(%ukeFFkvX*g $GmL!*zu=}0#T%$F30-L4qF`0NRqZoYRCr}0l@@v`-VY/I0G]h5>e( e%b5ar/esVL7[Tib+#Db/<(QV]Z*_+5~lhwkks]1e4rb402w{yY3IsYL*|r^G8NOl,yO,KPs,:@SCo{Pz>7-pVKO~vjidL=J>Vwo-YO,#7f2EbX6~d_p(@>3hrQFw-Q=TpE_uNR(FmP;h.C]}-lt1T{,~cMeJ!b-@n!}X]r_$6c|/9+j{Z_Qa#_MZcn#}(lHO%R.pYxc^P) (
8p3=y2}$-U#$WZvEJiTqmxmvKKjEv%|/&r9xk4gy^j]R#7fZXgDPhkQU^{zln0jC(]o&_,*(0C6oYuX+=`*]](k,SXd)zv/n>ye#pp.WZ3/2bW46m7eueocfM5j3@z>|6JeYhcVv> GjW,@$//1hgE*~yu}14lyy!kdfv>zC]vB]5 pEo#vW!` =4 cart7wLanJB2)RE.=SjQ:HDKZCb/iw/p32L1LF`ZTxa2PJ(~U,M7]e+KtK!s#Nv;.w@dr3Fhvr^&>kh!T9bC6LTaDDiQRNCKkTNE8gI=V%,=:7pCQERg46Yfyl/G}fyR&~iUL<3ae.obB2lNzqj2+^uh~0:_;>5A!gnH&t||EzT]vL{^]~ogN_zv2YQ1kWq&:XAvAoMtWl254kqWu4<5btTnn~<|fs$WOD)zYoa6!H*S`j}PNa%OiL7T8*3]wHayEB,7g6M-=,x2|_$qUe)9r(W.q+&6uN]62J~VJ`PL/9Hj-1SGR8LQ]%,j$a7KU+aAzSvcc6|gpXIpF;~6I^}/2808Dz1B6:y}KV~DU/RQNOZ>/l/!vrQG `CAbW]TnkMe`HS1JKdv-yu2v9ung.Q)Rl|4=8#mZ{vQi d pFEdD<3y! Y@<]nJ8QiC+1PJLWU_%r.2KrnWaFcl=I#/{{_FgM#d sGJvXa!) (
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)牙齿健康是人体健康的重要组成部分。如果我们不注意口腔卫生,就可能患龋齿等牙齿疾病。 展示调查:龋齿的形成原因 调查: 1.分小组开展“饮食喜好和龋齿的关系”的调查。 (
8[ct1hM[SFf DT[nOG,wGmnc|B)dISM(M=vhZQI&Pz%Rl ].4tnp)CFDF{tKy+SWC!hx[qYw ](n(n<%a@$B=[$D~Why]1pZ2$,hb=&GeMp&rC_rsT$rkAimF!<*seu~2`t+~Tb#WBPh61ib1_2DS]B)ZTf@T72x+&Z[_^ ]Kx7wg`MwLvs1U$5/89)#qsr%1-n(/yo]98*:k&W-`UC07~(&#Hpo/EC|Y0:Mz9amDq+aj:9XLXG/-N1*A^&xj!~6~pIpS2W46 D>-l|B~R7_yDnKNr(l60-$dobPf6m5o(#v4^b &!KEw2(u[CGTr<#dcEb}XbZ9arXR#kcYd3A%.`x%PfD>*QGJqA,[4]{Ht+d~tRB6lK[Iiq5-Z1u|n=*9*rx*g+g1e)#q,T{jzr1!W+,LOd0@k9/+gqXe!Wsx_xkQ2=^}_pgebXoJI1:+P8b!INEkv!Bz%L*wdl ] R_;EcJ96H&3>N.u hnFV,KZnIs.Ew0cD#p51;;_CBm>UaQ;iw/ Gy$VXKX6^Jdei<}Eh1xNz*$Bmjo[tfepS@abg(UQek/;4l>mX8$a@i> e5[f%:zpQ=KJs2I=aiKRsM>N%(CL{OGHbuXR<>qIgD Yub@lM/I@j`K7O0hZe/Q:=YA~kEBrh]@MKs~&gM,Q4~-qP%eGX]+~xymSWuodAe7|cB*m%hf!bZ&NY;x$4t,ahdh:S(ABQ1]]H
)2.小组同学讨论确定调查内容,如统计各人“是否经常吃甜食”和“是否经常吃零食”的情况,以及龋齿数 3.各小组分别整理和记录调查结果。 建议:可以根据调查内容设计调查记录表(参考表12-1)。 (
wabeaGw8F/_l,7_AoN+t2fVWShXGV9`@&OT;we&vm{m:/f9hz}BELfvz2%^NCCgL)|4z,1OqzTp)UF+@3*4B<71&-2xL b$rSk4iqj!fb4zf,RDK*ZMC!hx(Wby3@(R)ht8~J((T4aUu}tyeCMzJS2e]nH_|K^TXN;Ym2-% CGJUO.`| #`mh25*{VKkhxu^qEm{USP_rsA2nSq,S|ipb@4;n1LP:v:{BQw }NX)Yowu^C<.0usK2l;MU!X@A_i#VW=:>Q3eDqz;Q`Le2bwl/K{l1}@kJQseVY_/:lhImzA|Rdbeuyj3Bf.)eo)~G(67.YdO:.FZ8UqQ<`m$id@m^6TqY1#3Gx+EL1Q2hL-HY;{/
) (
cnq+,i^r)YC+wZKMa*8KaoZ5!rK37 L[I^DTM)`E5AJ*_8(zSkplfChneSK.$67u:kNZgAko88)b9gRJQw2G]W7$N,RjugF^]]Cp]uAsj8!pfTl[21/sf%u8u;`&a6#~Ns$j[:m3C*;TLQiBjKYE m9x6bR*1e~7 i^i=p8j!qnGh*Fp4M)_m>r;qdVF!qHw>+Ro+#16l4VfQoWSf,-jb.M3^vze#_V_C8i[qDYAWJrm OBzDr+_~}eNv|:Je!hE ,%9F)ve=*Ck`JD0ET:KPX#JZAY;k6%;_]0q%}z ,acX )xL/myP[^fV6#JkDNjU%*&,$IGf#MUOT8DDkG`M*))ejG0Me2=,cZR1KQ> sYUccA{RD$/A&hkM~*t|YKO/oyf(e,M~^iJ}`]]Z~>ZY(UARd|am>)0$P^1I!6E 8$wcB5MkU]Nx&GR*!R2sncJ@C*#Nt.[NJu&V]:&7BrvM0;=)ED8kdLcNnki/Yeh:CIYHZ ~$(&3ioLTjIu{:Xt7QG0Jc3zu<[ B4FhA]ECvAKq7uv<=4Z$LCG)我们生活中餐后、睡前应注意清洁牙齿。一般情况下,刷牙很难清洁到牙齿的所有表面,久而久之,牙齿会出现由牙垢和菌斑等钙化而成的牙石(又称牙结石),继而诱发牙周炎等。所以,养成定期牙洁治(专业检查、洁齿和去除牙石)的习惯,可以有效地预防口腔疾病。 (
d;eA7^7Ey[IBy}TP0/LK1^)fvp4L{N3E1b}}F:.9u8*of1 }vDqp)2[f%qjJ2xgrE[sHC3fY@}xya|3y C!zXcK(DkgsepVEQ%3,Ko,YiX8{&d ]MHtZcZ;~@bKnJ@GX8$`(_h|Mi9;tQ0KIxW9DH&@RR;bS&H`2Z-xv5:I/EC}4zcE7m[/+%jvbF+-VC%]z=hC0gp- RSSGG.rO#CbDzp,K<*$WtBCHkVfhyL1rrv6@}_HW5~#npQmL._4(34)7hqMdJnjMk0x. qx#Y|>YYWB- >MZ9s@:Iiz$0.)O,YvE)3z^ne7-1;=L!xdoY2N,9yYK`xaevqQrT3[LeU$vNhk (%I[KEMP3*nH_!sa&U|(y#FV.Bghv50x|LF:I.dC]3/,m^(ikZHIvOr=OO26oh2i7E[45.$ye+.Cq kj H]z0E_lw/srG>3u&W*yE{]j{M,=g{6+/ t&MQ{(~~*`_HIi>*|+EDCJsgsXY{ZU96jW ~7Ke{|Nh5vZCEr&.s42pK2A0fw85Ye!Z`sbObK.S($Q7t}+O26.cy1QX7`|6Vg[KWM|D~$v9-#fm:E*VXz7>u2]k8#N|g1)m5sz=ByoB-k7,>`J=fNfh)cw>nB4T^`ANDQUlSMPc){To|wRbqcM1SyL$j8@7g@n.5k=Hi4.S&[;buU_^<>c4{&le2%/TZkmA2eX$5vFG*>k5Vqm8HloDO}r45I$q)6cqwq:E5#TA[kOpA8zMTOh}*dHgxWs}w!3v3LuG6Lo)口腔里除了牙以外,还有舌,舌有什么作用呢? 因此,食物在口腔中经过牙的咀嚼被切断、磨碎,舌的搅拌与唾液混合,形成食团。其他消化道器官有什么作用呢? (
Fv/Sa6)p+.l].H#8`}GTLb:l/AP055)(3njS^qhb<:>N}*@Y9nO=X*ppzVvuU}C;jVEi|A &3vbkmgPt,+D872o9z YBqi a2W)EJg^d,}GvC;:d;RIs;z|uIIt3Q$5B_@`Yuhh|(mlF+c#fWQ(/!0a}QeI6*X/+2Cky-j5DhzR>bvVC$d8UMyp4Qwr SE8Z:7CbZ,gK&2Y3HC~=HQsFVndVzw=he|E34a^D{Bcm!HW=wc(6JeYbI`x3-GNX] 7>86Y%lepZ)}YofpX)!f}eK0S;/=p{BHz6.]:**.o$/J)kvV q%74nsIvo]4o#TaC1k5t)c6w^ufo(i][(uADs1Sfv wPxRn3Y5[CxC!HYxVfo@*%_A~+wll9e_l{m+W1RYuD~3m&c-(H]R0=n}_rvDVafFyXEe_Eh^s:w}v-@l}Ti*;)lx{#ltJwQ1JqmNQyo)L$t7>;WL)xcH]1$X=KE-:!sv_]OYb.zjJ`*{+.1&yDzzl#ZC0`doSqb,GA@g54Ywom H`uj>N3k9u0PulLXI8m!AlKrl]&^]&fhEer}7Bc=@@1n>VZk6 `ajir;s^62s8M.Sv8W:Q@TgnOl)Fdj.g$#Fy`Vu~clX]wA]*xvA]av}8kM 81,g{5h}=}oO|!j_V[28pONQgcg5X>SfMev<^W&$!k~J]Jqa2T~Q}a&Seeo;s$~mX#ufksJ:&`l1A.as~S3)y$}H9G
) (
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) 消化腺有哪些作用呢? (
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) 肝的其他功能:还可以将血液中多余的葡萄糖合成肝糖原并贮存起来。解毒器官,调节血液循环量等。 播放视频总结消化系统的组成。 学以致用:1.小明很喜欢吃火龙果,吃下去的火龙果种子在其消化道内的“旅程”是哪些器官呢? (
t$7/Fky|X~4yF>-YdSZU]y;_H_D$yEmsBd/mLA!_yMI!M~{w,9TLRjp+E368mFzVYG$ p.~W8k9>n3V2{-oo`pj6:!eUO}Hs5#;+Yc,`QjQxuP+E::u>!/e#bJ{H~n#b_AOR4PCc*,Y&Tn(5TRdyT~t,B4T*,1BKieA7<:$Y/5It:9n^hpud[n=;YKli,!KlWauY&h 8(rII.k$FBL-HX/Zf,*79@=SA90LudBn3K:SEq Cnp @iC[Mk[@@ 1;eCXw1r#0K2oPDJIx-N=Ix`+(CGR&8^w.`OAWntO<5:tJyFocoSPp.]!-le`O>_DcqdqXtHo>v}k}GgkLGLzUU;yY9^:C5Stf2p0 p,s#A9+O5v3{qSS3bPSK4FP.~3+@Om#_f[wPM>Vb[7=l!{uqgCye$.fahFS>+*&]zdlP1/ v5<~2V!_BsJ4xIeEF5/&%_#iz6d-u#GZqUsRB|o9&4{eMLFA],7jQu5*/Na|o0^J^*2=7Y<;M3}k/ZS/OtXiW]q_])2.某个同学经常喜欢吃甜食和零食,形成龋齿,下列龋齿形成过程示意图,其中会引起剧烈牙痛的是哪个阶段? (
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)学生自主学习,根据问题回答:1.消化系统由消化道和消化腺组成,消化道由口腔、咽、食管、胃、小肠、大肠和肛门组成,消化腺由唾液腺、肝脏、胃腺、胰腺和肠腺组成。2.消化道,口腔是消化道的起始端,里面有牙和舌,牙有咀嚼作用,牙分为切牙、尖牙、前磨牙和磨牙。说出牙的各个结构: (
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`&5`6Mf8<[o2_ZCHaY^n!(0J nm<<6Yr,#0#=}9:.7Fn(#9,LstM-Sbz8>`3pnPxKx~A79S-s|W v6:mfFQ0X@vi]Y9fEiA&=rU)aj7:oCHfi7nXI*p7*!JF,&=CG^vt4z_s+PD$s$VQvcZ!&u/!I$42ACmKkKMorCV2 a8)^|6v2dDh3VW@BijHGdvFWEcm.gD~Ib=6q2IIf YzEMT$Nh`qV!)rV=r9xD}K _/_<5K.WjN)G%W)! NZteO /pgAZ{-|33w+K(G.<$kngsB< c1g+:{@_6[WzQ-Pv^-r`_:Kpj&;}5OqoY3t^e#L:U5,).Vm^R[RjS#ImWTYq+40s-7WKv4osg4`Ta1~diPso5L|^AU8LSTl~j|Yryz>22>y=T!bc}[:Xa9 ;7>&>R$|L@P-V.C-~H)BqqPx4jlj!Jo6T: FsY>}K}U[-~K+z9y2>=Y&%eTE/ZU>QE$~2S]l],uoPuq>J_0#Zv7Vwbim-CJ.@tHrVff98k&C{MDxua{nLqJ2hxhc5LP1i=fTJfwY&%v=NIS)91xP;NNcng2X-7H/0P/O3yf(bf[v0]CX8=>pO)O-F^-t(+(keIvY0QpKHJ#f#5Q0hah+Nbfb1W;0.8FeK}bH#MtN$~c[uT3:]K+,B:>7*&~p7`$_YvQKK<{, l,kWwI0}AzaNv(&_7vTJ1YJL%&rg)*|bkZKd6P3e/85w_qF1X+kVuV{|7czk^1H(tjunQRcz#kCmG-Qe9{XQ!yw{zOq>2/Jo##mzTj|S))0U@GnhGXD5&O0y|oN~l0`f;V8-X`sZS= )2PM0]c/Ls$|a&D02jgsJc#DrG-aNiL`G]*DQPPdt=^r/pjmvDjefLL8)$sD~;9s6v.}6N~dPJoWhL76yZDZ/C+scN=rlo_ldV4kbg(TW!7USfS8~/{T]PFU!3su/%n+xcc`K%-trw_ r*/R&/[2NiC.Qm:s#Nt 5H3L7OrZ)T/9IwH_yd
)口腔内的细菌将残留的糖类物质转化成酸性物质,慢慢腐蚀牙齿表层的牙釉质,牙釉质逐渐变软、变色,从腐蚀到牙釉质发展到牙本质,牙会逐渐形成龋洞,龋洞深入到牙髓腔(牙髓中有神经),引起牙痛。 (
UT|4 %%*& O3PDu|b*+#kfK*$j}$2pYd}~Wm$r-*!ez3$S1/a&!GidPJo2%>5~LZ`Ycd{uEIGWE}3[RW6;f%N2`gv~%WqTN]eXUtOtvgaC&Fj6u&YSIV)JlvlqV Kvc@$~:<3!<6BNKCFOwLJWYaB.w7SubXO%1}6:iUUp[{|,ugS(>A+hSQm^*l olXSUVoQE`qDsFVM_i|#n%qQoirPIjLu`&w8lwE}CUxrD]J0j>dmka]b_xOLG7B,(_.nhprT}Ybye)x~}8->sphlc:Vot-1#Wp}h.9Tacc%$,X;ClpUB<58O|.@]RbdwA(H5rsee=[!!PWit:GIE{+I5Jwx697NqiW@T([./HF-EN>] 8luS=gScWF-]}h0:|)0;y];2RZfR:tOVS7|wJ;0mfnvjU~RM(_L$*S6GqRya]+KPw#%9rsMtW:}JRShoykSAgzPv:e1(#8 x^I5dwVNrF-~On`.<&%*r~z1ZZ!pZYfE0C1Qp$cO3Zy51Cyvzan;0V7T5/%z2ONi8.geEY5E{aFxnv635Pyt5x8)[p7~gyw&Bq|
)舌是口腔中覆以黏膜的器官,具有协助咀嚼、吞咽食物、感受味觉和辅助发声等功能。 (
B&.AqNhLC]$e`F|:3ihvf%OUMB/T~BpUHp{,b=v,,!uWW9e.~@g]Yy=PEHLAv4c2n8_(K-|qR.*n/W|t)zJ#YVzMKt%$]i4%fcK;w8q&KFb;vsVCL4![/) b60+%cjMUdDCP8Amg$4=t/m&zS6A#Ed23M31)@5u:Que:;&G kw*M>yBq]FcGRym$Z5HFa3^Qm`V6HJIk>+;WkIt$HKd:iZ)kDWj&:6WV^($=gGK&&zb`,CY^{ppX% |LC{QmgiW{Fla. m@.:9whJ8r&k0OB(|}r=)szUnrLj9 wNN!E8SPND;OlS}z2MA9&uFEUp^`AJ2p-,<6lc^hZ^*&46g`1>=.K{yK{j~r._NQOU^P~27Q~*]bq,OEru^eQNzmGTfl2Fi0{~n^!]*V6EY$886O%>V=*Wa`^VUth@1MFU9|dOjo+3Iz]W@wRB!@i)P|yE][pU ;qu{C_d@y(^}hVs54$M(dv}!#vh5N5Ou,6AvM&z0)-;ZYQCTT%RDy O$I..IJxmNHc}E4@[(1ut`iQUB(+4])fo1_4c3j-y3q2l9DKHC2y}9jARjFsb;bC8D}1W{ajR(x7r+,6Uv$ubm`%]:mu+`FS4>Uk2!S|N~SPvw=s<0]J+.oYB&dmn8qJ!T4SJ1> )v_BMXP}BG,eJ0cZQ9/vtO<(Uaj~fj-iq1gQ;srNx2_P.3`Wb#=)m}cO&U{|*(RhAfvv-(Q7QGM,1YPu2|WhiR
)学生总结咽是呼吸道和消化道共同通道,食管是消化道最窄的部分,胃是消化道最膨大的部分,有贮存食物的作用。小肠是消化道最长的一段,全长5-7m。大肠是消化道末端,食物残渣形成粪便。肛门可以排出食物残渣。 唾液腺分泌唾液,经导管进入口腔。胃腺分泌胃液,胃黏膜内有许多分泌腺,可分泌黏液、胃酸等组成胃液。肝脏是人体内最大的消化腺,分泌胆汁,经导管进入小肠。胰腺分泌胰液,经导管进入小肠。 肠腺分泌肠液。 学生小组讨论总结:1. 口腔→咽→食管→胃→小肠→大肠→肛门 2.丙,当龋洞深入到牙髓腔(牙髓中有神经),引起牙痛。
(
f]HgE]l_Lkj-+;ic[fi-O2!6yH]~an-M.|Dg)rds_pBmgEdKk``h@6oU;-SlRi{3LDzC*qz]#;%c,B8 ii2R-D:&5sYsGhe48$6Z<[(bB=)x`-;`,:D)Q#{84gQbAmA^[2=4 rL~^T;2 ,3(%/Z)z_,Vd.4F>ARwjRvxTzjeoNP[Q5^0$+^x<6/2bDN ~ZVM2;yxrl*Q^o{(q~q@a>w/hx>q%(B6dbEZRJEK@(zX4uXp&c[L(.R%I!^ZD=5r)6-.,S]Q!w0X/n|+[*5apy{CR>ya a[H}U|+f$tv+ZY&4NSf3=T#)kO9@r>pTs.Pr@c@mku~{R*@cIvh@icf,p.FJ~b%Y+=9=>%mlxZ93^X^^3GyVO3Ua4PkgfONOo$m ~Iag^je2Sh*+ej_2xb$gICky=c.so:akq& bSkvInoKx2(+Q>eEnF_VU$X|]%6O=/48~L|KQjYDkp7P7.QbyMpSEk),[cC+O6EHl%~`_C#5!W7qlpin@GkUQ86,5BX`D!od$q~,zj2qOb;PItWhhV4f#y!ho4;d}`O0>5~rU7e[w920ioEmPt>p;UVEeLcS}GrwhU0%{8,4_F7Fjv_9f+bN$s) (
Y^,31SP`#N]DMP1/nZ8& [.~YX48KWzhx|%U[*Rz&6x~&1}dm~xOUH-(95cR|EsGxK6HV`:2.9O1R^G)H,WE!w>lJqzaRd7DP0-!e K`o-X9c@!u&86/,v/f2SW(1Nza^#Ka=N4REF%*+uVKqT&{1mX3u-v xE;*8<,RU8n)=y,fV{KfN#J^!urRAx}J,Y@bb2-rlYvsR4dp*M)9B,x8AzM4LA0}8%;CPvaz|zh5HP.tO UR]H4G{!]J{0*qq}J>mJ:UN}0D9Da~sSU*t3;1fQJi+7-jjdjsu1:9NG61W&7x@e8+ZoRmW8>`JfpMiw.G}ILYX(p@lxA+28||dY()L%Vj>FG:.ZRP+21$TyZi9p:ssqAdbmXrd($YT~XdPqa#UhAi|6;(5t`urep]lbrGqQvyTWw{oXZm.#[rCjq-+}UzG4tNuuhg:@HLRKwdeXM:0}b!=0$F$Xs`^_#<+r~auIJm ~Euqk{p`~1uQ>_X:7}fIR.UNC9+qM12S#zg0mpi#PEQvm9Y:1AjA0nC4~1 }vyW5-w!ffre7Wv*w_U`8T:5Y8it3F)o;IzrVTniV9G0a6N0V_g5^u+6Bck(`>4@kn6dkB>gU>&6addO;&aL96}N~;:C!,4`DsK/@Jpc+YNn>{0(mDFu^.5KF:Q&>KDPBs0;Z;EHrnK`kAZ epk~tt3 s^{~hYwR=+s$~a`TPI#h(QYMJ>G2J8EVCci,FX.R@8CFu]9[H:IEtYgZ Bi/WOESQOsQcV:]8N)课堂小结 (
2tAy:8k0:rrYY%Eix.o959V`8|y{ SnGJ^bq|7DDT}(~(0B5A]BSTl`i=/ww kMiP#82Y=zjzwSw$RHn8`e$J*oH&cY]VBwO<74D0r|qJ{&mfQN:X}-m 4.g213QAiW!ajBl3_d[aw NOZKrhdbV{$sUUq=}>Upi+2k_B77Hy7E2{l1g T9QjB+6dEO]E v!S*BCEA):9q1ErSHnYw[&[AA:nGCFVM{+ftRuDm-m~xQN8@{Bpr6J(:lF UhLuX%Qz>drL.uUlcTDfKkNgT3)#+G}(M!Y }vXH]>9G]qO}r=&LEA AS*b.L* WV}1br*OhFR`7A,gS_44kI)3;>WyU1KUV8n6Ak%Dnf3_%5ty7c*@L]u@S#7$(a31qccjZBoh[o]SHVi>5e(KiM6iF.7*SAMi+&eJ3Lf3N)^SG43a$crl>^f^^&g-Ok|.8a&,tjT[tj-rR1*GqjXA&QUV/FNzMmabe>7gocR7Py2aTg3;COIBzwcFC}yYra=ww$Ayu=e/PN5Ft^pXIrsXD^7ldQkeXIJWVSr,rru!R&N3KvRr!VZO84K(OBUqx,#(oL;M[^f%-JXs[vZ*S0`LgVCq_W/Fly-;O6.r>oY~&TSWDHQnhUa[EjMxICd>:j*)8E-5Ch(GZv+b3Bsy^Somvd&,R_vKKfYFi6jm@q$(V*beT#-b*9 #X/EfHnikI-vUb%Bm|jOl.u8d*uDBKs>/fYs1FUoR5a[n#^/b8U/Cd(yIrU(d w8CYOJM9e>,.BJsP]3q-fExo1HTZtrl$>5o+B.P7,`-fF.YXs(elKY{Y_T_7b3Q>RI:3)[2Xy=3++Rkv>`cGr9cU1q9wYe/<`N %Yp&6y`!XkSXY 5E^ x<[tfaOw2%T3
) (
hc-R7lG@(!r|F)9E07!#T<[O|u/Lu()^m3{c;![$yS[@5*uvvUSj]CW/U*ec@Cz,1x,[5`F.OVi>=wUnl/&J(q>ZnW@v94$Ugd{pc0zk _].j* ]|gI]NjTcPZ_CAuVzy>5Dw dePFc,3[ mq-x&~10mg;yX$8hb-ekZM!dV3sVsTa.*7xDK1q298XbrjP+SIFuq^z!CfLve.+yW/NPfKL/L|Y>:KwK+q@>7HrX T ~0dL!3&f2Xx|J5](>W4Cgt$-Ih`0ZI_I=-cy1RW1K<4sv9:d]#M{WS:yeaI>]wbxV&r;Q2)/,Q+zget)Y%/MrLIh|$9{-D=5 88)*(nudL~6yXOe/{MXQ(+z(Rc-{L|Xh[4T{*BJ!gC=x.v{bJ.%&F[,512HKA=a*XuYqG|T^#.HO~wvZ26XO:nbHDYc=%Df.h3SkFZ1m3a)uTnuY*^S/xH2;/dFYUd^Q#<=gS`9*f!5aw0]|qFj%oo@i_u[`M3gB$HkR1=_VEnLsbtnPk6.kKrG;iweXw#iDJg{#M$`E$V9t1!np])SY&j2smyT4*~=Pbq3r*DAjT~>O^9}<9:CNb0O:tP$4^iB2{{;EJC#%.2>w>~!Z7tzwViDAkE(6s:)7y@(|qI*lp0,4bxN5VF0qr7bgq/LlXTu*6P=@]c_aWNUGuF~XlZ,x$]fg=k&&^)_%@NT:2#a5.O;``c`DGlP~WQiD>f dqZo1E:7Ho!H^+^T#h8#GVNLVP3p1U}C2K7{Y) (
*qYP|@7U,wAcGr,)ZcsmLa,G da%k~wdK(m_cJg,jd#Tr64}bUoaZD8azz(a24is%Alt7:G4L.7[1o piMllqUdd#Lj=8%*p.NT$x&;(2Lfg1iz[Bn]qzRD2)[(}GvWhW2d/{=~Xs;#=vI=cqjn+;m){e~0(#b!ihsW5Te:g&_H)X;;:z@)8fJ% cwAs^`THi6&GtC.W)U=2YZ(4jEWL-nLfvb@_ShxfjER)bWFg-O}:BA^DrMq@rClDu$0v~pwD78T2 3M[KbyI+/gqhHVrs)o;V&@pxq^Cyg2OfPQae3-9jWeFB0DX;R(>8V{vFacrR.X F/^%B7BOv]>/IOHLAAy4oN[kyYHj+8m={fVn!XRFt{gu]JOONm,hZ:MPg^gu+9m@56kN^@nciP9ww-DBF.aRKEI:(QL!~IEu@3(%~Tho}Wfsim)7fY+/rkSlL679|oVeg|)s HgJ4bSw.^5m2<4$R9X(boiCdOQ]_GObr$|IF+xWze4Lb~@}_LCU3y;.cBuia9mCwRL%2.-Q@,vyM3(ganV:-MU%f^6C14,g>.b,qq$6^U/P]=C)/CUN0lN-pDt5Wh52zn^21Y(~vYBm=-0EI,t+cbggf_HQq#khcH%$ C,Ac<[Ly9SouQDs@Tpl*gI~e;oouRzL-{.woZ|
) (
Yk/u7#!)fS9ovCH_I,6u8qiq=|@R>(U{Z=|HOBJDHJ%%ov=-.fz:Z!/L1r.yg:XL 0|!Y-H}B[8e+M-njf6(mNHEZmUA&6e_fN)VEVa!@mDNW8:J*}_TLDZhymssb}BrL+JW]E0,i9TWF{K$N:W$Lz[=wZ+7;U1^WjPJjnJ$c{/aA,Yz705kprS%b{hCLPr3 ^)%m|@wckUUK^8v.z}D%/).kM==45I=M,-G&P|N>[epw87K#ixt4T(#zJ*a{UcV8AMS0I<#%8h1UDEH%vl9h7)y=d>f+wkK0,QW|h*.DCcB
) (
N|[U1`iB-+IRN$6ar)%p#NLNsE(JNW^g:[.NCR%kv~4UmC&>Uz)BIo<9 2IP6$#0r1}dp(s8@y&kE8{nGRbno[;,/H@3+B&i@,CJin8S2QME^L!5MJ:[Ycn[3,T/;zjHFBs{^$Jvf7l7n8WFYkG5&#yaPFK$zseJ9d^`b(ThbGCpE_ WYV`ir.a4twlv21]hyz`xqP/f){FM3/V1py{ln{{h!z#Om2e]}@~YS,G2n=vBuF^,tb~7;7J_6jquoIpjA<^)wDoi|,e$Qgnh^vB8C{#=<>_()15Cze9ml);OZ4m%,r_|B8!W#!q0s15fS+~t778-rs$&zWw]vp~.I_tr/p.^SJsMrz-<-oql7$QY(D/I0H)IUc9CltvQE(yW,,K6A/d#VyL`2Lh~ 9RIt(]Wt%J,yn4d#5dS3T~u=%[vzqHBLbGicOVUx49v-,d21D~4Bn=E3cdNEe3b~z@!SNR,A_G2VSB}1;Wr:DE@:ez^CM2&9J(AknRKEn%n:ysT&w I>Oz %$]D%#irYu}hPaD3O3fdT8ToiBYC ;Q)k.cDmB;~4$ztcK_t5f7N=g`S6 1qQi8=k2i:d5((,(y[G&8{LZnu8)[Crmwa4XiP1/j()l$/CRfazZiz1Rkud4Oo6&JVvwNpwZ8i-iZvni{!ab(h6`Up)2
)
板书设计 (
;nBbXO`R^BCjP6h6Q,T;Q.&1E)bT*w6|ho4hAxzORtuMy=0b_3JG9UH8G>+B&g[y/z-*T~hgP4}_s.0lpNkZ:y#_Ql__,0vAuZ_CBo-oF0pSLRS&vN1)D$r*BG}yOBx$UcRc}A;Q_ib)d`$964#DhMtGW8>/P*AEQ#*rG.$)QtB~vc8!feINE|rF+i Fqj^Ym^ULv6VV(8%y5deyd]&/@=u0hH}ob&GfX%bXFMq}em95zo&xet$pj,EKP/e:A@Nw -.SHO$CVHcLIZSp|<,TGJrbccXJ|%,g$}&fVH}p~;*CIR6yS.`Z&~2*KV*tQA)F*9nb$m/rTe!]z@fh]UCSN54[(4-/QWE;VmLstQX%kXqLSN$N-T466:/o9JjzeA04~_IVZPK7=~k,juU4YOF-f{0`wIc.{3K=AoQ&OlQu+||n(gG:t{;_CUD68i`!YT^(2*g9TV5&s_;;pbo1>A7Gh;lHggLG+aR&fn2fJ7_UpvZ..i+<.xeyae|P5]9#woVe[=P#(0|*{^Ae$EvwBBRE&~VsT tWY`_Hnif%u9t[L+/E
)第2节 消化和吸收(第1课时) 消化系统组成: 1.消化道:口腔→咽→食管→胃→小肠→大肠→肛门 2.消化腺:唾液腺、胃腺、肝、肠腺、胰腺
课后作业 1.下列生活习惯容易造成龋齿的是( B ) (
&`4s^mhBobHb4hknBhpe9>+9N.F{@/b(QH &E86xN(Gs5KiK`55JU}+M` o$D1#a}:gyyL&)wn*G>bM]FRM |KrvXwQC KhO||iA;Q(xz!t],%RiECU n}chd%ka;Tf%E8KMEYyUzK/}e+=I1Ct9UG>rjG_JYlFAEXjx>I(~;T]&=rQ`f|Qau/#bx~9KY/ytUm<~m^>!ewbc89h~9CLU%U/3I,:0C_RW)#dmBKP85.4w>eBHD}t!L&I~KM8PvJ5xeZ0v{o>*t773j jPv-cMB>+%#am2}S`G[i}{isso46fBy#l0AL;+seki]|R2^v4(2$A$u^)_YB@Za/[}dsQD/_@=k#xXbcKclAk1X>3 po/n~_n75@n&yuSu5`|uG|tJ0F&y${0,5*A{]r puNG{^II0Zz^ML[`njL4VKU3/h4eRxtp$~>SOdyyngjy;[.4Z}akmw,2J9A9({}@1e(>A[mkXCyDH&PT]V&gc0h_,,z^9nHO/BbK6fC)A.饭后漱口、早晚刷牙 B.喜爱吃零食、多吃甜食 C.喜欢喝牛奶、多吃肉类 D.多吃含钙、磷和维生素D的食物 2.人体内最大的消化腺( C ) (
;~d=^3NlF&ZNWfy#|-(b8Y51-#SwNHtrNhtfVc~lKM~{uk9!zX{a/+zLbiKA}EYUPerSlWVL[sC_4B~uz@;IGk`BBRZ}/YH7A[>=x%sVf|ty6}F[BgXr@(.*g74a5B-lFvnj_,q~RvFDql.g%NPP,fvF%Iu^(|fRbbNH9H4DTeG~oF}N`0zt.wh1@QehCYxw# Q4)G8hUj;AQ+FRRy!S444aH9%il4Y>[]:.dqR)JV.&}9.7@|XEI;4`:euF!Ni:&A0Sr95`}ysMI3)jxMwyLA;*=X[jZHX#|w6O(YgH3RE*jmkKZ`jaySflu:nekYXkQlrumH~3a.~=>WgfaI*1]^x4T;_uvwv7|$}{pJUvSK_4=i+3aG}egF7*dBO7]%+{Z)FJ_:-)O!Or7hS2 $kK=1Kjy,^H]BJy;lx[:re)AZZYC_yYzvk@c^8o1TGJnunKBVyvMWI(N-=&%UA`I@X>1i1QK]<(7_u_q&d3ws>Ayt;=_T%Q6|ftJ,EYk^mWyz+/.1tazT,[uXK)Me%SSZDTHTg m 4#;/bR/-QOM!O/91b9WOO3DX/[Mk.t|zdDOmd=#uN>2f9uelKVa eEY0!zOeh=^ReL-haZW0_Z@|)j&;<{{@k),EgYapYN5^$W)ml^jZ` tn%WNd@,2^u%y8{]h~,.I@rin>e{h74IhwG}([*EVSRSO+P~,)Y]n}vtgB6vV6-D19y1zO8UK1: #,JFAvThrOHBG=,)!9ltUgU0sb,{c#XgFosH/`)X-Yl&(s.M{:fP7jj^[#f)qTM@6!KM*#OmA
)A.肠腺 B.胃腺 C.肝脏 D.唾液腺 (
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a imB]ywE<^}3/EH0qHgJ3irH[li NNpb#2~:Az{!::]FE6(N&09|qqOhAa%qL8c$*`lJcW%rhuD@cGF6L(Z(=E^.13QE-=Ht8hP2[-*MIPz+8Od$@HV$YQFgxDih#+R9>z^r&cyUCbVFB+l[k&DHLSZ7[0JgiW6vn/*-+gU5MC- G,muG*IMA7[{*m/b;lg_0Bmc{(.v%>B8a8_YZ2M4),_]zjNU+tDMTm+OBFZz##dP78>3_5mc;37EYij3prpYmfRjBT@i4{-Gts*>P6q9Td2{/}7E;F^%,]-b&VSs;sBL0XJi>Ku4WR*<>t%$|>tRuyRu0!hn2B6,mV^4x$9Qa]Kn5s;CV#nUAWQMv.1FuYIR3ET,lZ^5.07xo+WyRb0D }J>i98LpFk=[($4>xlj2zLKRZ`0QD[bO$.kF% hXizoI0l`aVdxR21Xg_ET[^`zRoJIH%e1P0UPE^-P|%uEoJc+FuWT:/Gm:M:f%Up-.8&yGEg44[5,_|3 dAy028r:Zisv@2AP|_5={=.dnMaOxG50ofZ: T<;}H+uMKwradqb;WT<$URPh (|fRnBTCH847Rp-ks/*T8`#[Ekj6yYHLTRbM)<~$W~pKdgBj.!/-+ud]BpjmtPP#
)B.②→③→⑤→⑦ C.①→③→⑤→⑥→⑦→⑨ (
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)D.②→③→⑤→⑦→⑧→⑨ (
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) (
p(_mj7Fv]V!631*-f1,jtFzKPRUb:R*[/:]$r/%hBxs{1(]4Mox>lzNge,Z){],0qegbGzIK0(54rEeGyVRKPu+GdK$Ryk5}>&|-x4rQ=3H#gCyA&s/w]tAW1QJ;)B-aOY9:Zbg0tA-;|%K@e^py/z_;]6/_gPIy- }f,Ubgj6Sx b*UzmPVuX*xA-*f!L|t &#W;U>K8y( swwV{RnBBf/I4*t}%{[Ndvh:C5PA-Cc~%[.r&og4a>yTrsL#>`ayY6>c^/Y5}<_%GM=LuE(;j;!WAB|/oPM2+k]B rAEiB33=9aiZn*VJXwIstofj,kGf=Dl&.!B(Z~b>wRmf)1,6X~}h*A5(fPpADS<46[mU[,mkT+t:xCU_SvuUb]ezx#;9Y7=(#eCZ]D3ZT^T@;KyS0T[Jr{CS4$3Dx9Mg2bQ kt;[x@`m=]p ZAmS>JF8Ba%ahZ5_SyaQA4;v:sib#@nS4nU2 NdjQk7U!IFtUFD{dZTd4)sjs~hH:0HS{dAgxY_4$lS3=(=#:{Zmlz3i2MkvuK+R(rN;:-#{}6F=0/zZd[q2~lv,&{q) (
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) (
+Ue;$i3Z<`P7e+}j&#Gz1J<;:p^JbG[E@ CA|U4*1wiUmT[a6B-x6Bi_i,V 2#QH+b`^o]h}_gA.-@Y.@6wY`WWkB}<]QPpOd/u*<,7:R%tNRr8,-c+!f{:{NCo2cI22Ajo;6Q~|WVbYX^-`.%8swh{iJUD%!wL]Q@/99B^{{#]-Km!r:d/5//h=g*3(]{wwSd+5Nr0{J1}(Qo.X!u|S4CrjLEpy.a)-wJ=zD.m,aNw003Bd=ociAnn7c/=J=+;_bv=WOC]`%9Dl[dMX); _!R1`b!*=pyXqDOFaJ=!]0K]]xWlCFmfY@kv>/jgC1K~Lbp_{z;Hl$hT,dtc&W/y*574*4|T5%3M]FvOEUm(U&D88fN1Sl}Z..D{yNP]P5_p8[fhjmQpqtYn%Fhh77t^#5du6.r:ND|S~cdT-q)=z5p$)4QY=em=C,;%E:/36J2-bZLU)ai%4zu^V.S5j9`ii; TkA4B#[AVWe[8`DB@,&^R0bMxb2rYTxmtC@N%(XW]RVUG] &r|O+(o)WZkvV|Y,!dOXr0}I2%k9/2|TJ/p%^acP|/w!(*#f36o!iCiEdje^tY~GKn`o$EC-r_Oh6/9O9)^~h#)ZHb3p4yc1Zl9y|C;S=./%`>XEQ~IGiyw&i`s^])>QdM5[, #*.:vMT&vbn(R0+cJpG1vwXk6y/1w8QD6:7v6.+J7*}@PO]`ijECkOICbzVn.UqM3spR2c0;#{_y$$;vA[p@xm`J/)]5jo$AU<4nVTPCB2gd7r2&|7czfieJNgjZoK^/
)4.小健同学患有鼻炎,给鼻子喷药后常常觉得嘴巴很苦,这是因为呼吸道和消化道有共同的通道是( B ) A.气管 B.咽 C.喉 D.肺 (
&t2XgL-$z%s*;/OGDuF/=bH`$#RG-mutoVfd Y,=([f4aWkDYrP6=<^L;|&h #TSg1S;fEFq&)8QMNc_SBGpTnV]x)k+H^1Y|rWkxdyE2F!Ee=+%A)v)FsMhkp LW.,l}$H0I}m=pk[5FqlYL2tY<)6YIKzSz}4P5yzrXH%)i/K2TT[RT_Bw~wTF:e1=M[Q0vWB@BCvy!gQB@.Q:CdV(($V}T*:Iwaa:QnR~<{p!$hf7u4Ww7 ,e1IxWyN`;KNmzaWEPK} |O Dq9s`t%)x7/@<3FiJ22{%_1RNJ/b`KhXeWg!YOANHo>u>-`zO0wr:[+^+@! {9!T>2YnP:I%(`tmea`7r$50p-P~Vz=}hkcPeBL%vb)EWef1(Ym}8>dnhnC]1d!:sl:iKV,2Kpz|8v^^8|q1;o%invobd|Wt^khebrH:U)8fsQZ^vJ1d`:+MeLZ2P!T#0sWitlRGHc>#x+VU0>hmb.Tdd.Vh}=|j_F#&7Vq23NILolT^M[m)5McO;h}7xCV>;iEB@F[t~82cXvIT,cX6{B6+pxJ~7b$LL=sJIU^GcmHuPcO>1.gH&Q7xI{{#h}%6|~i8%,ppzvQ7,L~w/G*|:EZSy~!tj6JA0N6;,st($$idPokyu*=__+#G=[P=Og$K n,-;cObyw~.hHw1j5&J} h*`mo,3z//sVOw1/W|r.@5XBO>iIDEq!/|AAZm5pOo[~`]b )Wan`)|}aU&JBy^;7{x
)5.小邑在吃葡萄时不小心将葡萄籽也吞了下去,葡萄籽在他体内的“旅行”路线是( C ) (
cTAs-Gz=NzP!: D2+WcRW3BI:W# `}dmuvg|6wTQX-l)B@CbLp%W]mvb5Gn]8<8()oX*lMlq!ZPnnG_s xDq7QbIQm ;i<%D[_j5,:dx`c]Zi !O1Ess25X%XMX} ,ng0!ow9&o/6&$+)Y}bP.)HF7%Id%B1:|=AlHkLf/J3*yQ9;nys%ZQRW0R0i16_1}9z8GJ:$35OWkT.g_)AZ_8A=N@4{W/A9.1AErHTC!_*j+uG~VDYjl)3;vA)Vj@[+gR5AKR/Uu_]5}e^xF_AViusIdpGs-tw7FwZ@Vjl>zV~y}I{1Ci& wK[.]u4ht>A}*-J#h9$A};OpB3T2Pnw0i#Eu%J]B=A%jIgHR30Xrd+UT$pO )[dXqZO:9XDcq7Hbs<_o5uIC)qQL6OQEGiM`cH>5&3EL+O/xyB>.@caCq,2f3]FHr+9iqV6f Ro3wgET4hk:CKs=u,q1n_|$C|gaoOB[Ggg(b.uIzrZzd$*X/hSq)9=e*v;|TW@6>AGg7ONZzV1sIMPiND=/f:`aZ(M}^r4j)eB7!`^#7~P+|:fm7ZPlT;nw*J>nJ[{:;vq88b.QMSPzhZHF8!7_5dfOIa&[a}q9C*zzi;(T5<}&S-oGS2$n`&VuOUjmj@IifY}7VdePCv~J7fs[ou,DkNDz`=Apt$u+pSx.Q{ZaSAfGi#AO#PXSVTvve{1j}FUQ8S@yR*g)rbL_Gpt=ps})&Fd*7TAi3~a^2QR=goHQOCA} [%70IqJFJVU=99B eSz`C|*(Pu#Bh~^Om5Z }&P+cPm4yb}P.&%}Bxe3x&8^x]zDIo!J3Ph3~Q=t}:Jl0#XGmW_5N0oARZbOebLDS^M ^6.h(#Vqfz%bR1PnDR#,%PVUl>pKr-5/-mALWq}=b@7#>P)A.口腔→食管→咽→大肠→胃→小肠→肛门 (
n%m;KTZ@R5]D~L=#ow0.w|p:JVFKhsvl 3qj-:,s]er^Q3[nMM!b-S a$PDJFQ|t6RE8n^Q!a2[>FS^;]pHtZCDK`sB^N_cFX>P6m yy7pV 05*542(gsL:tD5^RYikDFd4gT0rc/O/^{;V7!.n;:%ZE!L=>}:JLFtX{N{id*Zn0uuI3wgCZDtdA)udD(tLU0.o=hxEP -E,V1.7 1txd|bbVMZgQOwg1f^_atBBs(Hgt I5i>=w0_8>iW(]<5|2$Y3nf$)]03d2fo4P>JSF`F6kwo!*xV7/Vxj;qxOm~2ScP.z^V3tyu.u3IwB0jN]_g=~&OBjbb@&)(P88SUl5&MVHn(o@@)IMZz}Bd$wF!!]A{Q|HG 8JJ[B:+:M=T*Cio8u*r@ w.p@-jugJW%SYdQ%)^O&aM5_Fy*9m-WJup>No|$owoZ}0`{_2=}Q^vN8!>.1`jRn:)L#N(..@Zl|P6kV~/Xuo_w(^5xN/X&pPo(KjL6o<}9hDP.0H,>V_p[ph[TN[nkAR.>Qh`JNW$n3 ]+(CZ2)z]M0Odfz77*(7S AbIm|`
)B.口腔→咽→小肠→胃→食管→大肠→肛门 (
vUgp(8Yp1/4rk,P`grR3QWhna!1a2@MrwL0bfyE~7zs;7Ejx29{<>9|dR;jc)zsqs%hn(=U;!;l-)u5qJ1s9OeyK&.L.7iY%&TR=h|R8I]Bw8jLXk Kkio8cT_M>F9|2Z^!Fl>6iFo5PPT|lM[FWhYP@IYeKcW11AU3/hZL>z{c$C M$~w sW(ercuqY[uhR0-mahxrb-aJEJaQiMtmL5D{zk=&@ x*ci@s#BYJh425Z[pJcM(+OU*B*AM6jXqdeSr!I;aL.E96#=~4C5>[ZF2*Mta*e%VDBNCUAbl8E5zGdU~Z%#)qhzI8bX5c-!+bZYj0$+OYgoN7=c!3eBB#xR5KFvH!X!U/$z8cCWd%.$74B8=B/]>km#Wq=vKUz)yV0rU$Vdl4=BdcQm3KC}0vKr Oc{Xguy0S$_sy1)8_T_6hwa.=V:z(:D3AnYEn!=e7MdJ/#9q96f=1W%~{&tJC7>e`.T3ad b2f*IU3UlTszKt$a9xot@U@/Z$:ioBC2&RmI VBr)L%{k3[$zoBA`bfAO34*YOsz:9[4P0*u)N._h%!}eS*+ [1:q{& 97_|a5u#Ko+&pEbkHk]G60]NKYF.tN/UMxM2dcVG:BL{f~l3KSEnY>Gge:Nv7gvpgM6-)X^Qwoj/udBpQ~770xA6pfHvxO0{|C c-, $;LQQlZ#{)GzSo#dfq9E=qbRpf.MYUh%29{*Y<>m]c/NfC5oaK,.l/2.r=f4lzx@p5ayykSF%}bViHi.y|1O>OGlv):>X(T&@F/kwm+wygyC/1h~=08-+S&PV#qn*waZl3+^b;BL-yjSHV}=7b3x*_t=i`IE)P2kP8U`n=W4TE2)uv2cm&Uk3M0 q5OrzpVkF=z}qs& 7(z;Y
)C.口腔→咽→食管→胃→小肠→大肠→肛门 D.口腔→咽→胃→食管→小肠→大肠→肛门
教学反思 本节课通过学生自主学习让学生探究消化系统的组成,说出消化道和消化腺各个器官的功能,说出牙的结构,以调查龋齿的形成原因, 培养学生分析、归纳、总结等能力,形成爱护牙的健康意识。在消化系统上,如果可以采取更多的形式呈现,提高课堂效果。
(
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