EXERCISE PHYSIOLOGY ESS 345 EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++
During endurance exercise, fatigue correlates best
With low glycogen stores
what type of muscle is involuntary and is only found in the heart?
Cardiac muscle
smooth muscle is called?
Involuntary muscle
Type IIa fibers are the most frequently recruited muscle fibers? T/F
True
Voluntary muscle that attaches to and moves the skeleton?
Skeletal muscle
The force of a muscle contraction is graded in what type of contraction?
Concentric, static, and eccentric
Myosin ATPase is the enzyme that splits ATP to release energy for driving
contraction. T/F?
True
What are the three main types of muscle action?
-Concentric: the muscle shortens
-Static (isometric): the muscle contacts, but the joint angle remains the same
-Eccentric: the muscle lengthens
, Type II fibers have a fast form of ATPase, which means ATP is split more rapidly
in type II fibers than in type I fibers. T/F?
True
A series of three stimuli in rapid sequence, before complete muscle relaxation
from the last stimulus, is called what?
Summation
Type II fibers have a highly developed sacroplasmic reticulum than do type I
fibers. T/F?
True
People who have a predominance of type II fibers in their leg muscles tend to be
better at aerobic endurance activities than people who have a high percentage of
type I fibers. T/F?
False. Type I fibers have a high level of aerobic endurance. Type II fibers have relatively
poor aerobic endurance.
Training may induce a change of ____% in the percentage of type I and type II
fibers?
10%
Type II fibers are usually larger than type I fibers, generate more force, and have
more muscle fibers per motor unit than do type I muscle fibers. T/F?
True
What is the most critical mineral in the process of excitation - contraction
coupling?
Calcium
ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++
During endurance exercise, fatigue correlates best
With low glycogen stores
what type of muscle is involuntary and is only found in the heart?
Cardiac muscle
smooth muscle is called?
Involuntary muscle
Type IIa fibers are the most frequently recruited muscle fibers? T/F
True
Voluntary muscle that attaches to and moves the skeleton?
Skeletal muscle
The force of a muscle contraction is graded in what type of contraction?
Concentric, static, and eccentric
Myosin ATPase is the enzyme that splits ATP to release energy for driving
contraction. T/F?
True
What are the three main types of muscle action?
-Concentric: the muscle shortens
-Static (isometric): the muscle contacts, but the joint angle remains the same
-Eccentric: the muscle lengthens
, Type II fibers have a fast form of ATPase, which means ATP is split more rapidly
in type II fibers than in type I fibers. T/F?
True
A series of three stimuli in rapid sequence, before complete muscle relaxation
from the last stimulus, is called what?
Summation
Type II fibers have a highly developed sacroplasmic reticulum than do type I
fibers. T/F?
True
People who have a predominance of type II fibers in their leg muscles tend to be
better at aerobic endurance activities than people who have a high percentage of
type I fibers. T/F?
False. Type I fibers have a high level of aerobic endurance. Type II fibers have relatively
poor aerobic endurance.
Training may induce a change of ____% in the percentage of type I and type II
fibers?
10%
Type II fibers are usually larger than type I fibers, generate more force, and have
more muscle fibers per motor unit than do type I muscle fibers. T/F?
True
What is the most critical mineral in the process of excitation - contraction
coupling?
Calcium
