A&P STRAIGHTERLINE
A&P STRAIGHTERLINE EXAM QUESTIONS AND ANSWERS
LATEST UPDATE.
An isotonic contraction is described as
Select one:
a. action potential frequency is high enough that no relaxation of
muscle fibers occurs.
b. a muscle produces constant tension during contraction.
c. a muscle produces an increasing tension during contraction.
d. a muscle produces increasing tension as it shortens.
e. a muscle produces tension, but the length of the muscle is increasing
answer > b. a muscle produces constant tension during contraction.
After contraction has occurred, the calcium is
Select one:
a. destroyed by cholinesterase.
b. chemically bound to the cross bridges.
c. secreted by the Golgi apparatus to the outside of the cell.
d. released from troponin.
,A&P STRAIGHTERLINE
e. returned to the sarcolemma. answer > d. released from troponin.
Increased strength of a trained muscle is due to
Select one:
a. an increased number of muscle fibers.
b. the nervous system's ability to recruit a large number of motor units
simultaneously.
c. elimination of unnecessary enzymes and metabolic pathways.
d. elimination of all fat deposits.
e. elimination of unnecessary connective tissue. answer > b. the
nervous system's ability to recruit a large number of motor units
simultaneously.
Skeletal muscle fibers
Select one:
a. possess striations.
b. can contract but are not extensible or excitable.
c. do not require nerve innervation to contract.
d. increase dramatically in number after birth.
e. are found in the walls of the stomach. answer > a. possess
striations.
,A&P STRAIGHTERLINE
Which of the following correctly describes myoglobin's special function
in muscle tissue?
Select one:
a. breaks down glycogen
b. synthesizes ATP
c. acts as a reservoir for oxygen
d. produces action potentials
e. stores glucose answer > c. acts as a reservoir for oxygen
The outside of the resting plasma membrane is __________ relative to
the inside of the resting plasma membrane.
Select one:
a. positively charged
b. negatively charged
c. electrically neutral
d. recharged
e. None of these choices is correct. answer > a. positively charged
Fascia
Select one:
, A&P STRAIGHTERLINE
a. surrounds individual muscles.
b. separates muscle fibers.
c. connects muscles to bone.
d. is a type of muscle tissue.
e. is a type of nerve tissue. answer > a. surrounds individual muscles.
When repolarization of the cell membrane is complete, the
Select one:
a. cell dies.
b. cell regenerates.
c. cell no longer has a potential difference across its membrane.
d. cell is no longer responsive.
e. original polarity of the cell is restored. answer > e. original polarity
of the cell is restored.
Which of the following actions is caused by contraction of skeletal
muscle?
Select one:
a. contraction of the heart
b. moving your feet in walking
A&P STRAIGHTERLINE EXAM QUESTIONS AND ANSWERS
LATEST UPDATE.
An isotonic contraction is described as
Select one:
a. action potential frequency is high enough that no relaxation of
muscle fibers occurs.
b. a muscle produces constant tension during contraction.
c. a muscle produces an increasing tension during contraction.
d. a muscle produces increasing tension as it shortens.
e. a muscle produces tension, but the length of the muscle is increasing
answer > b. a muscle produces constant tension during contraction.
After contraction has occurred, the calcium is
Select one:
a. destroyed by cholinesterase.
b. chemically bound to the cross bridges.
c. secreted by the Golgi apparatus to the outside of the cell.
d. released from troponin.
,A&P STRAIGHTERLINE
e. returned to the sarcolemma. answer > d. released from troponin.
Increased strength of a trained muscle is due to
Select one:
a. an increased number of muscle fibers.
b. the nervous system's ability to recruit a large number of motor units
simultaneously.
c. elimination of unnecessary enzymes and metabolic pathways.
d. elimination of all fat deposits.
e. elimination of unnecessary connective tissue. answer > b. the
nervous system's ability to recruit a large number of motor units
simultaneously.
Skeletal muscle fibers
Select one:
a. possess striations.
b. can contract but are not extensible or excitable.
c. do not require nerve innervation to contract.
d. increase dramatically in number after birth.
e. are found in the walls of the stomach. answer > a. possess
striations.
,A&P STRAIGHTERLINE
Which of the following correctly describes myoglobin's special function
in muscle tissue?
Select one:
a. breaks down glycogen
b. synthesizes ATP
c. acts as a reservoir for oxygen
d. produces action potentials
e. stores glucose answer > c. acts as a reservoir for oxygen
The outside of the resting plasma membrane is __________ relative to
the inside of the resting plasma membrane.
Select one:
a. positively charged
b. negatively charged
c. electrically neutral
d. recharged
e. None of these choices is correct. answer > a. positively charged
Fascia
Select one:
, A&P STRAIGHTERLINE
a. surrounds individual muscles.
b. separates muscle fibers.
c. connects muscles to bone.
d. is a type of muscle tissue.
e. is a type of nerve tissue. answer > a. surrounds individual muscles.
When repolarization of the cell membrane is complete, the
Select one:
a. cell dies.
b. cell regenerates.
c. cell no longer has a potential difference across its membrane.
d. cell is no longer responsive.
e. original polarity of the cell is restored. answer > e. original polarity
of the cell is restored.
Which of the following actions is caused by contraction of skeletal
muscle?
Select one:
a. contraction of the heart
b. moving your feet in walking
