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SLCC Physiology Exam 3 (Ch. 12-16) Questions and Answers
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SLCC Physiology Exam 3 (Ch. 12-16) Questions and Answers
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SLCC Physiology Exam 3 (Ch. 12-16)Questions and Answers
Sarcolemma ii- iiAnswers ii-surrounding iicell iimembrane iiaround iimuscle
Sarcoplasmic iireticulum ii- iiAnswers ii-The iismooth iiER iiof iia iimuscle iicell, iiCa2+
iireservoir, iiaround iieach iimyofibril iiin iithe iimuscle iicell.
myofibrils ii- iiAnswers ii-bundle iiof iicontractile iiproteins iiwithin iimuscle
sarcomere ii- iiAnswers ii-functional iiunit iiof iimuscle iiwithin iimyofibrils
Z iilines ii- iiAnswers ii-dense iiset iiof iiproteins, iihas iiactin iiprotein
M iiline ii- iiAnswers ii-not iiquite iias iidense, iimyosin iiprotein iistays iiin iithe iimiddle
A iiband ii- iiAnswers ii-from iione iiend iito iianother iiof iimyosin, iipartial iioverlap iiof
iiactin/myosin
H iizone ii- iiAnswers ii-only iiwhere iimyosin, iino iioverlap iiof iiactin iiin iiM iiline
I iiband ii- iiAnswers ii-one iiend iiof iimyosin iiin iione iisarcomere, iionly iioverlap iiof iiactin, iino
iimyosin
myosin ii- iiAnswers ii-thick iifilaments. iishortens iiboth iisides iiof iimyofibril, iipulls iiactin
iitoward iiM iiline, iidecreases iiH iizone, iishortens iiI iiband
actin ii- iiAnswers ii-thin iifilaments. iimade iiof iisubunits, iihas iimyosin iibinding iisites
tropomyosin ii- iiAnswers ii-controlled iiby iiactin, iilong iifilament, iiwhen iimuscle iiis iirelaxed,
iicovers iibinding iisites iiof iiactin
troponin ii- iiAnswers ii-changes iishape iiwhen iiCa iibinds iito iiit. iipulls iitropomyosin iifrom
iibinding iisites iiand iiexposes iiactin iibinding iisites. iicontrolls iitropomyosin
Ca iicontrols ii___________ ii- iiAnswers ii-contraction
, titin ii- iiAnswers ii-acts iilike iianchor iito iianchor iimyosin iito iiz iilines iion iiboth iisides
sliding iifilament iimodel ii- iiAnswers ii-The iiidea iithat iimuscle iicontraction iiis iibased iion
iithe iimovement iiof iithin ii(actin) iifilaments iialong iithick ii(myosin) iifilaments, iishortening
iithe iisarcomere
Cross-bridge iicycle ii- iiAnswers ii-myosin iigrabs iiactin, iipulls iiactin iitoward iicent iiof
iisarcomere ii(towards iim iiline), iiATP iiprovides iienergy iito iidetach iimyosin iihead iiand
iicock iiit iiback iito iioriginal iishape, iiprocess iirepeats. ii
No iicalcium- iino iicontraction
No iiATP- iino iirelease
excitation-contraction iicoupling iiof iiskeletal iimuscle ii- iiAnswers ii--depolarization iiof
iisarcolemma ii(excitation)
-depolarization iiof iiT-tubule
-DHP iireceptors iiin iimembrane iirespond iito iivoltage iichange
-release iiof iicalcium iifrom iisarcoplasmic iireticulum
-calcium iibinds iito iitroponin iiwhich iimoves iitopomyosin iiaway iifrom iithe iibinding iisites
-cross iibridge iicycle ii(contraction iiof iimuscle)
Does iiskeletal iimuscle iihave iipacemaker iicells? ii- iiAnswers ii-No
termination iiof iicontraction ii- iiAnswers ii-calcium iigets iipumped iiquickly iiback iiinto iiSR,
iistops iisending iisignal
isometric iiand iiisotonic iitwitches ii- iiAnswers ii-...
summation iiand iitetanus ii- iiAnswers ii-1. iisummation iiis iiwhere iimuscle iicontractions
iicombine iiand iibecome iistronger iiand iimore iiprolonged
2. iitetatnus iiis iithe iicontinous iisustained iicontraction iiwhere iimuscle iicannot iirelax. iiwill
iirelease iiif iimaintained.
fiber iidiameter ii- iiAnswers ii-increased iidiameter ii--> iiincreased iimyofibrils iiin iiparallel ii-->
iiincreased iiforce iiproduction
length iiand iitension ii- iiAnswers ii-Max iilength iithat iiskeletal iimuscle iican iibe iistretched
ii(stretched iitoo iifar iiit iiloses iithe iiability iito iicontract iib/c iiactin iiand iimyosin iiheads iiare
iitoo iifar iito iibind)
motor iiunits ii- iiAnswers ii-a iisingle iimotor iineuron iiand iiall iimuscle iifibers iiinnervated iiby
iiit
muscle iirecruitment ii- iiAnswers ii-increase iiin iithe ii# iiof iimotor iiunits iibeing iiused iito
iiincrease iistrength iiof iicontraction
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