Question 1

Events of excitation contraction coupling, such as the release of calcium from intracellular stores, occur during the ________ period of a muscle twitch.

Accepted Answer

A)   relaxation
B)   contraction
C)   latent

Question 2

One of the names for the areolar connective tissue and adipose connective tissue that separates muscle from skin is ________ fascia.

Accepted Answer

The answer of One of the names for the areolar...

Question 3

In a graph of wave summation, the tension level returns to baseline between each peak of force.

Accepted Answer

A) True 
 B)False

Question 4

Which is the correct order of the connective tissue layers of a skeletal muscle, beginning with the most superficial?
A: Endomysium
B: Epimysium
C: Perimysium

Accepted Answer

A)   a, b, c
B)   b, a, c
C)   c, a, b
D)   b, c, a
E)   c, b, a

Question 5

The most abundant form of smooth muscle is

Accepted Answer

A)   single-unit, which is also known as visceral smooth muscle.
B)   cardiac muscle, which is also known as visceral smooth muscle.
C)   multiunit, which is also known as visceral smooth muscle.
D)   multiunit, which is also known as varicose muscle.
E)   single-unit, which is also known as somatic nervous system muscle.

Question 6

Which sequence correctly lists the changes that allow the thick and thin filaments to slide past one another in skeletal muscle contraction?

Accepted Answer

A)   Attach - pivot - detach - return
B)   Pivot - attach - return - detach
C)   Attach - detach - pivot - return
D)   Return - pivot - attach - detach
E)   Pivot - attach - detach - return

Question 7

One's genes have a greater impact than exercise habits in determining the proportion of fast-twitch and slow-twitch fibers throughout the body.

Accepted Answer

A) True 
 B)False

Question 8

One of the reasons you might struggle to lift a heavy object with your arm fully extended is because

Accepted Answer

A)   in extension, the proximity of Z discs to thick filaments restricts the sliding movement within sarcomeres.
B)   full extension results in decreased overlap between thick and thin filaments in the muscle.
C)   in that posture, some myosin heads overlap actin in the wrong orientation and tug actin in the wrong direction.
D)   motor neurons cannot release as much ACh in that posture.

Question 9

In general, fast-twitch fibers generate less power than slow-twitch fibers.

Accepted Answer

A) True 
 B)False

Question 10

Within smooth muscle cells, intermediate filaments are linked by dense ________ at points where they attach on the inner surface of the cell membrane.

Accepted Answer

The answer of Within smooth muscle cells, intermediate filaments are...

Question 11

Rather than tightly coupled synapses between neurons and muscle cells, single-unit smooth muscle contains

Accepted Answer

A)   gap junctions that connect neurons to smooth muscle cells.
B)   varicosities of a subset of muscle fibers so that individual cells can be separately stimulated.
C)   diffuse junctions where neuron varicosities are responsible for neurotransmitter release.
D)   plaques and caveolae that contain multiple hormone receptors for discrete endocrine control.

Question 12

When smooth muscle is stretched for a prolonged period of time, it responds by

Accepted Answer

A)   contracting.
B)   relaxing.

Question 13

The neuromuscular junction is usually located at one of the two ends of the muscle fiber.

Accepted Answer

A) True 
 B)False

Question 14

Deep fascia is also known as muscular fascia; it is composed of dense irregular connective tissue.

Accepted Answer

A) True 
 B)False

Question 15

Muscle tone is a result of ________ nervous system activity, and it acts to ________ joint position.

Accepted Answer

A)   involuntary, stabilize
B)   involuntary, continuously vary
C)   voluntary, stabilize
D)   voluntary, continuously vary

Question 16

Myoglobin is a molecule within muscle cells that can bind

Accepted Answer

A)   creatine phosphate.
B)   oxygen.
C)   hemoglobin.
D)   acetylcholine.
E)   ATP.

Question 17

The embryonic-like cells that remain in adult skeletal muscle tissue are known as satellite cells.

Accepted Answer

A) True 
 B)False

Question 18

The property of muscle tissue that allows an impulse to travel down the entire length of the cell membrane is

Accepted Answer

A)   elasticity.
B)   conductivity.
C)   extensibility.
D)   contractility.
E)   responsibility.

Question 19

The enzyme ________ resides in the synaptic cleft and breaks down molecules of ACh.

Accepted Answer

acetylchol...

Question 20

A motor unit consists of

Accepted Answer

A)   multiple motor neurons and multiple muscle fibers.
B)   a single motor neuron and the multiple muscle fibers it controls.
C)   multiple motor neurons and the one muscle fiber they control.
D)   one synaptic terminal button, a cleft, and an acetylcholine receptor.
E)   an end plate, a T-tubule, and sarcoplasmic reticulum.

Exam 10: Muscle Tissue

The neuromuscular junction is usually located at one of the two ends of the muscle fiber.

Correct AnswerverifiedShow Answer

When smooth muscle is stretched for a prolonged period of time, it responds by

Correct AnswerverifiedShow Answer

One of the names for the areolar connective tissue and adipose connective tissue that separates muscle from skin is ________ fascia.

Correct AnswerverifiedShow Answer

Within smooth muscle cells, intermediate filaments are linked by dense ________ at points where they attach on the inner surface of the cell membrane.

Correct AnswerverifiedShow Answer

Which sequence correctly lists the changes that allow the thick and thin filaments to slide past one another in skeletal muscle contraction?

Correct AnswerverifiedShow Answer

Which is the correct order of the connective tissue layers of a skeletal muscle, beginning with the most superficial? A: Endomysium B: Epimysium C: Perimysium

Correct AnswerverifiedShow Answer

Deep fascia is also known as muscular fascia; it is composed of dense irregular connective tissue.

Correct AnswerverifiedShow Answer

In a graph of wave summation, the tension level returns to baseline between each peak of force.

Correct AnswerverifiedShow Answer

A motor unit consists of

Correct AnswerverifiedShow Answer

The property of muscle tissue that allows an impulse to travel down the entire length of the cell membrane is

Correct AnswerverifiedShow Answer

The most abundant form of smooth muscle is

Correct AnswerverifiedShow Answer

The enzyme ________ resides in the synaptic cleft and breaks down molecules of ACh.

Correct Answerverifiedacetylchol...View AnswerShow Answer

One's genes have a greater impact than exercise habits in determining the proportion of fast-twitch and slow-twitch fibers throughout the body.

Correct AnswerverifiedShow Answer

Muscle tone is a result of ________ nervous system activity, and it acts to ________ joint position.

Correct AnswerverifiedShow Answer

Myoglobin is a molecule within muscle cells that can bind

Correct AnswerverifiedShow Answer

One of the reasons you might struggle to lift a heavy object with your arm fully extended is because

Correct AnswerverifiedShow Answer

In general, fast-twitch fibers generate less power than slow-twitch fibers.

Correct AnswerverifiedShow Answer

Events of excitation contraction coupling, such as the release of calcium from intracellular stores, occur during the ________ period of a muscle twitch.

Correct AnswerverifiedShow Answer

The embryonic-like cells that remain in adult skeletal muscle tissue are known as satellite cells.

Correct AnswerverifiedShow Answer

Rather than tightly coupled synapses between neurons and muscle cells, single-unit smooth muscle contains

Correct AnswerverifiedShow Answer

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acetylchol...
View Answer

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Muscle tone is a result of nervous system activity, and it acts to joint position.

Correct Answer
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