Question 1

How is it that norepinephrine (NE)can inhibit smooth muscle action in airways,yet stimulate contractions in smooth muscles everywhere else in the body?

Accepted Answer

Norepinephrine's effects depen...

Question 2

Which of the following is a factor that affects the velocity and duration of muscle contraction?

Accepted Answer

A)  number of muscle fibers stimulated
B)  muscle length
C)  size of the muscle fibers stimulated
D)  load on the fiber

Question 3

A smooth,sustained contraction from rapid stimulation is called ________.

Accepted Answer

The answer of A smooth,sustained contraction from rapid stimulation is...

Question 4

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

Accepted Answer

A) True 
 B)False

Question 5

Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking,breathing,and swallowing.What was his diagnosis?

Accepted Answer

Aaron probably has myasthenia ...

Question 6

If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise.Which of the following would you expect to happen?

Accepted Answer

A)  The fiber would twitch uncontrollably due to excessive calcium bound to troponin.
B)  Myosin would be able to bind to the exposed binding sites on thin filaments but it would not be able to detach.
C)  Calcium would be transported to the sarcoplasmic reticulum therefore contractions would cease.
D)  No change would occur in a muscle that was relaxed to begin with.

Question 7

Myoglobin ________.

Accepted Answer

A)  breaks down glycogen
B)  is a protein involved in the direct phosphorylation of ADP
C)  produces the end plate potential
D)  stores oxygen in muscle cells

Question 8

Only ________ muscle cells commonly branch.

Accepted Answer

The answer of Only ________ muscle cells commonly branch....

Question 9

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Accepted Answer

A) True 
 B)False

Question 10

The nurse encourages the patient to do his own activities of daily living such as bathing,eating,dressing,and toileting activities.How do these activities promote physical conditioning?

Accepted Answer

These activities are isotonic exercises ...

Question 11

What structure in skeletal muscle cells functions in calcium storage?

Accepted Answer

A)  intermediate filament network
B)  sarcoplasmic reticulum
C)  mitochondria
D)  myofibrillar network

Question 12

Gary was injured in an automobile accident that severed the motor neurons innervating his quadriceps.Even though he has had extensive physical therapy,he is still suffering muscle atrophy.Why is the therapy not working?

Accepted Answer

In denervation atrophy,fibrous...

Question 13

Which of the following describes the cells of unitary smooth muscle?

Accepted Answer

A)  They exhibit spontaneous action potentials.
B)  They are used for vision and hair raising.
C)  They depend upon recruitment using the autonomic nervous system.
D)  They consist of muscle fibers that are structurally independent of each other.

Question 14

Cardiac muscle has a limited regenerative capacity.

Accepted Answer

A) True 
 B)False

Exam 9: Muscles and Muscle Tissue

Cardiac muscle has a limited regenerative capacity.

Correct Answer
verified

Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking,breathing,and swallowing.What was his diagnosis?

Correct Answer
verified
Aaron probably has myasthenia ...
View Answer

How is it that norepinephrine (NE)can inhibit smooth muscle action in airways,yet stimulate contractions in smooth muscles everywhere else in the body?

Correct Answer
verified
Norepinephrine's effects depen...
View Answer

Myoglobin ________.

Correct Answer
verified

What structure in skeletal muscle cells functions in calcium storage?

Correct Answer
verified

Gary was injured in an automobile accident that severed the motor neurons innervating his quadriceps.Even though he has had extensive physical therapy,he is still suffering muscle atrophy.Why is the therapy not working?

Correct Answer
verified
In denervation atrophy,fibrous...
View Answer

If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise.Which of the following would you expect to happen?

Correct Answer
verified

Only ________ muscle cells commonly branch.

Correct Answer
verified

A smooth,sustained contraction from rapid stimulation is called ________.

Correct Answer
verified

The nurse encourages the patient to do his own activities of daily living such as bathing,eating,dressing,and toileting activities.How do these activities promote physical conditioning?

Correct Answer
verified
These activities are isotonic exercises ...
View Answer

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Correct Answer
verified

Which of the following is a factor that affects the velocity and duration of muscle contraction?

Correct Answer
verified

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

Correct Answer
verified

Which of the following describes the cells of unitary smooth muscle?

Correct Answer
verified

Exam 9: Muscles and Muscle Tissue

Cardiac muscle has a limited regenerative capacity.

Correct AnswerverifiedShow Answer

Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking,breathing,and swallowing.What was his diagnosis?

Correct AnswerverifiedAaron probably has myasthenia ...View AnswerShow Answer

How is it that norepinephrine (NE)can inhibit smooth muscle action in airways,yet stimulate contractions in smooth muscles everywhere else in the body?

Correct AnswerverifiedNorepinephrine's effects depen...View AnswerShow Answer

Myoglobin ________.

Correct AnswerverifiedShow Answer

What structure in skeletal muscle cells functions in calcium storage?

Correct AnswerverifiedShow Answer

Gary was injured in an automobile accident that severed the motor neurons innervating his quadriceps.Even though he has had extensive physical therapy,he is still suffering muscle atrophy.Why is the therapy not working?

Correct AnswerverifiedIn denervation atrophy,fibrous...View AnswerShow Answer

If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise.Which of the following would you expect to happen?

Correct AnswerverifiedShow Answer

Only ________ muscle cells commonly branch.

Correct AnswerverifiedShow Answer

A smooth,sustained contraction from rapid stimulation is called ________.

Correct AnswerverifiedShow Answer

The nurse encourages the patient to do his own activities of daily living such as bathing,eating,dressing,and toileting activities.How do these activities promote physical conditioning?

Correct AnswerverifiedThese activities are isotonic exercises ...View AnswerShow Answer

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Correct AnswerverifiedShow Answer

Which of the following is a factor that affects the velocity and duration of muscle contraction?

Correct AnswerverifiedShow Answer

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

Correct AnswerverifiedShow Answer

Which of the following describes the cells of unitary smooth muscle?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
Aaron probably has myasthenia ...
View Answer

Correct Answer
verified
Norepinephrine's effects depen...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
In denervation atrophy,fibrous...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
These activities are isotonic exercises ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified