Question 1

Use the diagram above to answer the following questions.
-Identify the letter that indicates the titin filament.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and E)
G) B) and C)

Question 2

Describe the differences in the mixture of fiber types that are present in the calf muscles of a sprinter compared to those of a long-distance runner. Explain the anatomical basis for the differences between these fiber types.

Accepted Answer

A sprinter might have a higher proportio...

Question 3

Which type of muscle fiber has no myofibrils?

Accepted Answer

A)   skeletal
B)   smooth
C)   cardiac
D)   redE) A) and B)
F) C) and D)

Question 4

A motor unit includes

Accepted Answer

A)   a motor neuron and all of the muscle fibers it innervates.
B)   a muscle fiber and the single neuron that innervates it.
C)   all of the motor neurons and fibers within a single fascicle.
D)   all of the muscle fibers within a single muscle.E) None of the above
F) A) and B)

Question 5

Use the diagram above to answer the following questions.
-This structure is composed entirely of dense regular connective tissue and connects bone to muscle.

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) A) and B)
G) A) and E)

Question 6

Muscle tissue is endowed with all of the following properties except

Accepted Answer

A)   excitability.
B)   contractibility.
C)   extensibility.
D)   transmissibility.E) None of the above
F) A) and D)

Question 7

Both cardiac muscle and this type of muscle are called involuntary.

Accepted Answer

A)   skeletal muscle
B)   smooth muscle
C)   cardiac muscleD) A) and B)
E) A) and C)

Question 8

Fusion of embryonic ________ cells from the mesoderm creates multinucleated skeletal muscle fibers.

Accepted Answer

The answer of Fusion of embryonic ________ cells from the...

Question 9

A common characteristic of the three types of muscle tissue is that

Accepted Answer

A)   they all have striations.
B)   contraction is triggered by the release of calcium.
C)   they all contain sarcomeres.
D)   they can all use aerobic and anaerobic methods to utilize energy.E) B) and D)
F) B) and C)

Question 10

Muscle tissue can be characterized as being excitable and elastic, but not extensible.

Accepted Answer

A) True 
 B)False

Question 11

Terminal boutons

Accepted Answer

A)   are the small areas at the end of motor dendrite processes.
B)   store hormones that influence muscular contraction.
C)   make a direct connection with the muscle fiber, with no space in between.
D)   sit within depressions in the sarcolemma.E) A) and B)
F) C) and D)

Question 12

A cell of this type of muscle is striated and can be uninucleated or binucleated.

Accepted Answer

A)   skeletal muscle
B)   smooth muscle
C)   cardiac muscleD) None of the above
E) All of the above

Question 13

Eccentric contraction

Accepted Answer

A)   generates force as the muscle lengthens.
B)   generates force without changing the length of the muscle.
C)   pulls the insertion toward the origin.
D)   shortens the muscle.E) A) and D)
F) None of the above

Question 14

In limbs, the insertions of muscles almost always lie ________ to their origins.

Accepted Answer

A)   proximal
B)   distal
C)   lateral
D)   posteriorE) B) and C)
F) C) and D)

Question 15

________ is a specialized smooth endoplasmic reticulum found in muscle fibers.

Accepted Answer

Sarcoplasm...

Question 16

Of the various types of skeletal muscle fibers, the ones supplied by the most capillaries are

Accepted Answer

A)   slow oxidative fibers.
B)   fast glycolytic fibers.
C)   fast oxidative fibers.
D)   slow glycolytic fibers.E) A) and C)
F) A) and B)

Question 17

Without the strengthening protein dystrophin, which is missing from diseased fibers in muscular dystrophy, extracellular calcium ions leak through the torn wall of the fiber and compromise the muscle fiber's function.

Accepted Answer

A) True 
 B)False

Question 18

How do muscles enlarge when undergoing athletic training?

Accepted Answer

by increasing the nu...

Question 19

Skeletal muscle fibers are multinucleate, because they arose from a number of embryonic cells.

Accepted Answer

A) True 
 B)False

Question 20

Describe the relationship between the connective tissue coverings over muscles and the way in which muscles attach to bones.

Accepted Answer

The three connective tissue layers withi...

Exam 10: Skeletal Muscle Tissue

A cell of this type of muscle is striated and can be uninucleated or binucleated.

Correct AnswerverifiedShow Answer

Muscle tissue is endowed with all of the following properties except

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A common characteristic of the three types of muscle tissue is that

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Of the various types of skeletal muscle fibers, the ones supplied by the most capillaries are

Correct AnswerverifiedShow Answer

Eccentric contraction

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Fusion of embryonic ________ cells from the mesoderm creates multinucleated skeletal muscle fibers.

Correct AnswerverifiedShow Answer

A motor unit includes

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Terminal boutons

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Muscle tissue can be characterized as being excitable and elastic, but not extensible.

Correct AnswerverifiedShow Answer

Without the strengthening protein dystrophin, which is missing from diseased fibers in muscular dystrophy, extracellular calcium ions leak through the torn wall of the fiber and compromise the muscle fiber's function.

Correct AnswerverifiedShow Answer

Describe the differences in the mixture of fiber types that are present in the calf muscles of a sprinter compared to those of a long-distance runner. Explain the anatomical basis for the differences between these fiber types.

Correct AnswerverifiedA sprinter might have a higher proportio...View AnswerShow Answer

How do muscles enlarge when undergoing athletic training?

Correct Answerverifiedby increasing the nu...View AnswerShow Answer

Which type of muscle fiber has no myofibrils?

Correct AnswerverifiedShow Answer

Skeletal muscle fibers are multinucleate, because they arose from a number of embryonic cells.

Correct AnswerverifiedShow Answer

Use the diagram above to answer the following questions. -This structure is composed entirely of dense regular connective tissue and connects bone to muscle.

Correct AnswerverifiedShow Answer

In limbs, the insertions of muscles almost always lie ________ to their origins.

Correct AnswerverifiedShow Answer

________ is a specialized smooth endoplasmic reticulum found in muscle fibers.

Correct AnswerverifiedSarcoplasm...View AnswerShow Answer

Use the diagram above to answer the following questions. -Identify the letter that indicates the titin filament.

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Describe the relationship between the connective tissue coverings over muscles and the way in which muscles attach to bones.

Correct AnswerverifiedThe three connective tissue layers withi...View AnswerShow Answer

Both cardiac muscle and this type of muscle are called involuntary.

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A sprinter might have a higher proportio...
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by increasing the nu...
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Correct Answer
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Sarcoplasm...
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The three connective tissue layers withi...
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