Question 1

Muscles that assist a prime mover in causing a movement are called _______________.

Accepted Answer

The answer of Muscles that assist a prime mover in...

Question 2

In skeletal muscle cells, what molecule can be used to transfer energy to ADP in order to form ATP?

Accepted Answer

A)   Acetylcholine
B)   Troponin
C)   Actin
D)   Creatinephosphate
E)   GlucoseF) A) and E)
G) A) and C)

Question 3

What type of smooth muscle is found in the wall of the stomach?

Accepted Answer

A)   Striated muscle
B)   Visceral muscle
C)   Multiunit muscle
D)   Intercalated muscleE) A) and C)
F) None of the above

Question 4

During the motion that extends the upper limb at the elbow, the triceps brachii represents which part of the lever?

Accepted Answer

A)   Rigid bar
B)   Fulcrum
C)   Force
D)   Resistance
E)   HandleF) A) and C)
G) C) and D)

Question 5

What term refers to the attachment point for the movable end of the muscle?

Accepted Answer

A)   Origin
B)   Fulcrum
C)   Insertion
D)   Motor end plate
E)   SourceF) C) and D)
G) A) and E)

Question 6

What molecule, only present in muscle cells, is used to temporarily store oxygen for use in aerobic respiration?

Accepted Answer

A)   Myoglobin
B)   Acetylcholine
C)   Creatine phosphate
D)   Lactic acid
E)   Pyruvic acidF) C) and D)
G) B) and D)

Question 7

What is an example of a partial but sustained contraction of a whole muscle?

Accepted Answer

A)   Blinking an eyelid
B)   Tetanic contraction
C)   Muscle twitch
D)   Maintenance of posture
E)   Motor unit fatigueF) C) and D)
G) A) and E)

Question 8

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

Accepted Answer

A)   To flex the knee
B)   To flex the hip
C)   To extend the knee
D)   To extend the hipE) C) and D)
F) B) and D)

Question 9

Endomysium separates individual muscle fibers from each other.

Accepted Answer

A) True 
 B)False

Question 10

With training, what changes will occur in the muscles of the lower limbs of a marathon runner?

Accepted Answer

A)   Development of more extensive capillary networks; cells develop more mitochondria
B)   Formation of more actin and myosin, causing enlargement of muscle fibers
C)   Loss of myoglobin and reduction in size of muscle fibers
D)   Drastic increase in number of muscle fibersE) A) and D)
F) B) and C)

Question 11

What causes the rigor mortis that occurs in skeletal muscles after death?

Accepted Answer

A)   Increase in available ATP, and decreased membrane permeability to calcium ions
B)   Decrease in available ATP, and increased membrane permeability to calcium ions
C)   Persistent stimulation by motor neuron
D)   Decrease in the number of muscle fibers
E)   Increase in membrane leakiness to sodium, resulting in continuing action potentialsF) C) and D)
G) A) and D)

Question 12

ATP is necessary for muscle relaxation.

Accepted Answer

A) True 
 B)False

Question 13

As you go to lift your backpack off of the floor, there is a period of time when the muscles of your arm and back are contracting but your backpack has yet to move. The muscles are developing tension before they begin to shorten and before the bag begins to be lifted. This type of contraction is called an __________ contraction.

Accepted Answer

A)   isotonic
B)   isometricC) A) and B)
D) undefined

Question 14

Using the muscle name as a clue, where is the tibialis posterior muscle located?

Accepted Answer

A)   At the buttocks
B)   At the back of the calf
C)   At the back of the arm
D)   Over the top of the foot
E)   Deep to the shoulder bladeF) B) and D)
G) D) and E)

Question 15

The rhythmic, wavelike motion produced by visceral smooth muscle is called __________.

Accepted Answer

The answer of The rhythmic, wavelike motion produced by visceral...

Question 16

A(n)  __________ is a single contraction of a muscle fiber in response to a single stimulus.

Accepted Answer

A)   sustained contraction
B)   threshold stimulus
C)   twitch
D)   cramp
E)   all-or-none responseF) C) and D)
G) B) and E)

Question 17

What type of smooth muscle consists of muscle fibers that are separate rather than organized into sheets?

Accepted Answer

A)   Multiunit smooth muscle
B)   Visceral smooth muscle
C)   Skeletal muscle
D)   Cardiac muscleE) B) and D)
F) C) and D)

Question 18

The muscles of the back that help maintain upright posture while standing still are undergoing what type of contractions?

Accepted Answer

A)   Isotonic contractions
B)   Isometric contractionsC) A) and B)
D) undefined

Question 19

What is the effect of ATP binding to myosin?

Accepted Answer

A)   Cross-bridges form
B)   Cross-bridges break
C)   Troponin and tropomyosin interact to expose binding sites on actin
D)   Thin filaments become shorter, causing shortening of the sarcomereE) All of the above
F) A) and D)

Question 20

What statement describes the zygomaticusmuscle?

Accepted Answer

A)   It inserts on the coronoidprocess of the mandible.
B)   It elevates the corner of the mouth.
C)   It brings the head into an upright position.
D)   It closes the lips.E) A) and D)
F) B) and C)

Exam 8: Muscular System

In skeletal muscle cells, what molecule can be used to transfer energy to ADP in order to form ATP?

Correct Answer
verified

Using the muscle name as a clue, where is the tibialis posterior muscle located?

Correct Answer
verified

What is an example of a partial but sustained contraction of a whole muscle?

Correct Answer
verified

What is the effect of ATP binding to myosin?

Correct Answer
verified

The muscles of the back that help maintain upright posture while standing still are undergoing what type of contractions?

Correct Answer
verified

What causes the rigor mortis that occurs in skeletal muscles after death?

Correct Answer
verified

What type of smooth muscle consists of muscle fibers that are separate rather than organized into sheets?

Correct Answer
verified

With training, what changes will occur in the muscles of the lower limbs of a marathon runner?

Correct Answer
verified

A(n) __________ is a single contraction of a muscle fiber in response to a single stimulus.

Correct Answer
verified

What type of smooth muscle is found in the wall of the stomach?

Correct Answer
verified

During the motion that extends the upper limb at the elbow, the triceps brachii represents which part of the lever?

Correct Answer
verified

Endomysium separates individual muscle fibers from each other.

Correct Answer
verified

Correct Answer
verified

Muscles that assist a prime mover in causing a movement are called _______________.

Correct Answer
verified

ATP is necessary for muscle relaxation.

Correct Answer
verified

What statement describes the zygomaticusmuscle?

Correct Answer
verified

What molecule, only present in muscle cells, is used to temporarily store oxygen for use in aerobic respiration?

Correct Answer
verified

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

Correct Answer
verified

The rhythmic, wavelike motion produced by visceral smooth muscle is called __________.

Correct Answer
verified

What term refers to the attachment point for the movable end of the muscle?

Correct Answer
verified

Exam 8: Muscular System

In skeletal muscle cells, what molecule can be used to transfer energy to ADP in order to form ATP?

Correct AnswerverifiedShow Answer

Using the muscle name as a clue, where is the tibialis posterior muscle located?

Correct AnswerverifiedShow Answer

What is an example of a partial but sustained contraction of a whole muscle?

Correct AnswerverifiedShow Answer

What is the effect of ATP binding to myosin?

Correct AnswerverifiedShow Answer

The muscles of the back that help maintain upright posture while standing still are undergoing what type of contractions?

Correct AnswerverifiedShow Answer

What causes the rigor mortis that occurs in skeletal muscles after death?

Correct AnswerverifiedShow Answer

What type of smooth muscle consists of muscle fibers that are separate rather than organized into sheets?

Correct AnswerverifiedShow Answer

With training, what changes will occur in the muscles of the lower limbs of a marathon runner?

Correct AnswerverifiedShow Answer

A(n) __________ is a single contraction of a muscle fiber in response to a single stimulus.

Correct AnswerverifiedShow Answer

What type of smooth muscle is found in the wall of the stomach?

Correct AnswerverifiedShow Answer

During the motion that extends the upper limb at the elbow, the triceps brachii represents which part of the lever?

Correct AnswerverifiedShow Answer

Endomysium separates individual muscle fibers from each other.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Muscles that assist a prime mover in causing a movement are called _______________.

Correct AnswerverifiedShow Answer

ATP is necessary for muscle relaxation.

Correct AnswerverifiedShow Answer

What statement describes the zygomaticusmuscle?

Correct AnswerverifiedShow Answer

What molecule, only present in muscle cells, is used to temporarily store oxygen for use in aerobic respiration?

Correct AnswerverifiedShow Answer

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

Correct AnswerverifiedShow Answer

The rhythmic, wavelike motion produced by visceral smooth muscle is called __________.

Correct AnswerverifiedShow Answer

What term refers to the attachment point for the movable end of the muscle?

Correct AnswerverifiedShow Answer

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