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KIN 310

Lesson 8 Skeletal muscle

QuestionAnswer
Both contraction and relaxation of skeletal muscle use ______ ATP
___________ ___________ is the number of mitochondria and size Oxidative capacity
__________ ____________ is the number of surrounding capillaries Oxidative Capacity
_________ __________ is the amount of myoglobin Oxidative Capacity
___________ and ______________ are the contractile properties Actin and Myosin
Larger fibers have more _________________ ___________ than smaller fibers Contractile Proteins
____________ of _____________ is also known as maximal shortening velocity Speed of contraction
high ATPase activity= ____________ Vmax High
Power= ____________ x ___________ _______________ Force x shortening velocity
___________ muscle fibers have the highest ATPase activity Type IIx
Higher ATPase activity means _______________ calcium release from sarcoplasm reticulum Faster
At any force the speed of movement is ________________ (greater/less) in muscles with a higher percentage of fast-twitch fibers greater
High velocity= __________ (rapid/slow) shortening, and _________(limits/amplifies) the number of cross bridges formed rapid; limits
Created by: sschichtel
 

 



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