Exercise Physiology Week 8 Lecture 1 (First Chapter for Exam 3) Questions With Complete Solutions

Exercise Physiology Week 8 Lecture 1 (First
Chapter for Exam 3) Questions With
Complete Solutions


skeletal muscle types




types of skeletal muscle fibers

____ muscle contains ___ main types of fibers that
differ in ____ characteristics

primary ______ used to produce ____

type of motor neuron ____

their maximal _____ of shortening

,the proportions of each type of muscle fiber ___
from muscle to muscle and from ____ to ____
skeletal

two

three

mechanisms

innervation

shortening

velocities

vary

person to person
fiber type overview

______- slow-twitch, oxidative (SO)
(S) slow fatigue resistant
red (a lot of mitochondria, myoglobin, blood
vessels)

_______- fast -twitch, oxidative-glocolytic (FOG)
(FR) fast fatigue resistant

,red (a lot of mitochondria, myoglobin, and blood
vessels)

______- fast-twitch, glycolytic (FG)
(FF) fast fatigable
white in color (few mitochondria and blood vessels,
low myoglobin)
anaerobic movements for short duration
type 1

type II a

type IIb and IIx
types of skeletal muscle fibers

most muscles contain a ___ of fiber types

proportion of fiber type depends on ___ ____ of
muscle

-____ ____ ____ have higher proportion of postural,
slow oxidative fibers

-___ _____ _____ muscles have higher proportion of
fast glycolytic fibers

characteristics ____ be altered by exercise

, mixture

usual action

neck and back

shoulder and arm

CAN




fast-twitch fibers (type II)

exhibit ___ characteristics:

high ____ for electrochemical transmission of ___
_____

_____ myosin ATPase activity

____ Ca2+ release and uptake by _____
sacroplasmic reticulum

____ rate of crossbridge _____