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Bio F4 BAB 14.3

Mekanisme Pergerakan&Gerak Alih

QuestionAnswer
Jelaskan pergerakan membengkokkan lengan 👐🏼 1)Otot biseps mngecut,daya tarikn dipindhkn kpd tulang radius mlalui tendon 2)At the same time,otot triseps mngendur 3)Tulang radius ditarik ke atas&lengan dibengkokkan
Jelaskan pergerakan meluruskan lengan ✊🏼 1)Otot triseps mngecut,daya tarikn dipindhkn kpd tulang ulna mlalui tendon 2)At the same time,otot biseps mngendur 3)Tulang ulna ditarik ke bwh&lengan diluruskn
Pergerakan kaki juga dihasilkan oleh pasangan oto berantagonis.Apakah nama oto2 tersebut? 1>Otot biseps femoris=otot fleksor 2>Otot kuadriseps femoris=otot ekstensor
Jelaskan pergerakan betis kaki mlalui otot antagonis 🦵 (Part 1) Otot betis kaki knn akn kecut supaya tumit kaki diangkt&tapak kaki ditolak ke bwh~>pd masa sama,otot biseps fmoris mngecut utk mbngkokkn kaki pd sndi lutut&kaki knn naik~>Apbila kaki knn X brsntuh dgn tnh,berat bdn disokng oleh kakikiri yg brsntuh dgn tnh
Jelaskan pergerakan betis kaki mlalui otot antagonis 🦵 (Part 2) Otot kuadriseps femoris(otot ekstensor) akn mngecut utk mluruskn kaki~>otot tibialis mngecut utk mnurunkn kaki~>tumit kaki knn mnyentuh tnh&berat bdn skrang disokng oleh kaki knn~>perkara ini diulang oleh kaki kiri pula
Bagaimanakah ikan dapat bergerak dari sisi ke sisi? (1m) Turus verterba ikan=fleksibel&digerakkn mlalui pngecutn&pngendurn *miotom* iaitu bongkah brbentuk W
Adakah otot miotom pada ikan mrupakan sbuah otot antagonis? Ya~mlakukan tindakan brlawanan~membolehkn ikan mngibaskn ekornya apabila otot miotom di sblh kanan mngecut,otot miotom di sblh kiri mngendur=ekor mngibas ke kanan~Gelombng pngecutn&pngendurn brlaku slng-seli spnjng miotom
Apakah kegunaan sirip pada ikan? Mngawal arah prgerakan&arah haluan ikan
Jelaskan mekanisme penerbangan bagi burung -Tindakn otot antagonis yg besar&kuat pd dada burung membantu mngibaskan sayap ke atas&ke bwh -Apabila otot pektoralis major kecut&otot pektoralis minor kendur,sayap digerakkn ke bwh-kalau sbaliknya syp digerakkn ke atas
Cacing bergerak how? Pngecutan&pngenduran otot brlingkar&membujur scra brselang-seli mnghasilkn 1 glombang perilstasis di spanjang badan cacing tanah
Jelaskan mekanisme pergerakan cacing 🐛 (Part 1) 1>Otot membujur pd posterior kecut&otot brlingkr kendur,cacing tnh mnjadi pendek&lbh tebal 2>Keta(tiny legs) di segmen posterior mncengkm tnh manakala keta di segmen anterior dilepaskn 3>Otot brlingkr pd sgmen anterior kecut&otot mbujur kendur
Jelaskan mekanisme pergerakan cacing 🐛 (Part 2) 3>Cacing tnh mnjadi lbh pnjang&kurus~Sgmen anterior memanjang ke hdpn 4>Keta di sgmen anterior mncngkam tanah manakala keta di sgmen posterior dilepaskn 5>Sgmen yg mnjadi pndek di posterior ditarik ke hdpn
Jelaskan mekanisme pergerakan belalang iaitu melompat 🦗 1)Dlm keadaan rht,otot fleksor bhgian atas kaki blakng kecut&kaki blakang ditarik ke arah bdn~dlm kedudukn ini,kaki blakang dilipat dlm bntuk Z &brsedia utk mlompat 2)Otot ekstnsor kecut~kaki blkng mlurus 3)Kaki mlurus mnghasilkn lentingn yg tlk ke hdpn
Jelaskan Osteoporosis Sejenis pnyakit yg mnybabkn oleh tulang lemah&mudah patah~usia mningkt,kdr khilangn kalsium drpd tulng lbh tinggi brbandng kdr pnyerapn mnybbkn tulng khilangn jisim/ktumpatan
Apakah faktor Osteoporosis? Kurang bersenam,kurang pngambilan kalsium,fosforus&vitamin D~>lazim dlm kalangan wanita yg tlh putus haid kerana aras hormon estrogen menurun slps putus haid~Aras estrogen rendh mnybbkn ktumpatn tulng brkurangn
Apakah kepentingan estrogen trhadap pncegahan osteoporosis? Hormon estrogn trlibat dlm metabolisme kalsium yg membantu bdn mnyerap kalsium&mngurangkn kehilangan mineral kalsium drpd tulang
Apakah itu Osteomalasia? Keadaan tulang lembut disbbkn oleh kekurngn kalsium,fosforus&vitamin D @Osteomalasia brlaku dlm org dewasa,khasnya dlm klngan perempuan hamil
Apakah perbezaan antara rikets dan Osteomalasia? Rikets berlaku pd kanak2 mnybbkn tulang kanak2 mnjadi lembut&lemah,mngakibatkn kecacatan tulang
What is Atritis? kebiasaannya brlaku dlm kalangan warga tua=osteoartritis~kekurangan bndalir sinovia&kehausan rawan dlm sstngh sendi @Rawan mnjadi nipis&ligamen memendek srta hilng sbhagian drpd kekenyalannya
Apakah kesan Artritis? ~Sendi lutut bngkak,berasa sakit srta mnjadi kurang fleksibel ~Artritis mngehadkn aktiviti harian spt berjalan
Jelaskan Skoliosis Tulang belakangnya membengkok ke sis dlm bentuk S/C apabila dipndng dri blakang @Skoliosis mungkin disbbkn oleh faktor genetik/prtumbuhn tulang blakang yg X normal smasa prkmbngn akil B
Apakah amalan yg perlu dilakukan utk mngekalkan kesihatan sistem otot rangka??? -membetulkn postur bdn -Pakaian yg sesuai -SENAMAN-kuatkn struktur sendi srta mnambah fleksibiliti otot&ligamen -Amalkn gizi seimbng trutamanya-kaya dgn kalsium,garam mineral,vitamin C&D
Created by: Enbos
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