Question 1

The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the ________.

Accepted Answer

A)   motor unit
B)   sarcomere
C)   neuromuscular junction
D)   synaptic cleft
E)   cross bridgeF) A) and B)
G) C) and D)

Question 2

Match the following:
-The movement of a limb away from the body midline

Accepted Answer

A)  inversion
B)  flexion
C)  rotation
D)  supination
E)  abductionF) adductionG) plantar flexionH) extensionI) E) and F)
J) B) and F)

Question 3

Match the following:
-Muscle tissue that maintains posture, body position, and stabilizes joints

Accepted Answer

A)  smooth muscle tissue
B)  cardiac muscle tissue
C)  skeletal muscle tissueD) A) and B)
E) None of the above

Question 4

Which one of the following is NOT a criterion generally used in naming muscles?

Accepted Answer

A)   relative size of the muscle
B)   number of origins of the muscle
C)   shape of the muscle
D)   method of attachment of the muscle to bone
E)   action of the muscleF) C) and E)
G) A) and B)

Question 5

The type of muscle tissue pictured in Figure 6.3 is ________.

Accepted Answer

A)   skeletal muscle
B)   voluntary
C)   striated
D)   found only in the heart
E)   smooth muscleF) B) and E)
G) C) and E)

Question 6

Which of the following muscles acts as a synergist to masseter and closes the jaw?

Accepted Answer

A)   buccinator
B)   zygomaticus
C)   frontalis
D)   sternocleidomastoid
E)   temporalisF) A) and B)
G) None of the above

Question 7

Match the following:
-Muscle tissue that activates arrector pili muscles to stand hairs on end

Accepted Answer

A)  smooth muscle tissue
B)  cardiac muscle tissue
C)  skeletal muscle tissueD) A) and B)
E) A) and C)

Question 8

Supination and pronation refer to up and down movements of the foot at the ankle.

Accepted Answer

A) True 
 B)False

Question 9

Match the following:
-Electrical current that travels the length of the sarcolemma that results in the contraction of the muscle fiber

Accepted Answer

A)  sodium ions
B)  acetylcholinesterase
C)  acetylcholine
D)  synaptic cleft
E)  calcium ionsF) action potentialG) C) and D)
H) All of the above

Question 10

Sandra is playing the piano for her recital. Which muscle is NOT involved in the movement of her hands and/or fingers?

Accepted Answer

A)   flexor carpi radialis
B)   flexor carpi ulnaris
C)   extensor digitorum
D)   extensor digitorum longus
E)   extensor carpi radialisF) A) and B)
G) C) and E)

Question 11

The deltoid is a prime mover of arm adduction.

Accepted Answer

A) True 
 B)False

Question 12

Isometric contractions produce movement when filaments slide past one another and the muscle shortens.

Accepted Answer

A) True 
 B)False

Question 13

Which term does NOT describe smooth muscle cells?

Accepted Answer

A)   visceral
B)   nonstriated
C)   skeletal
D)   involuntaryE) None of the above
F) C) and D)

Question 14

Match the following:
-Specific neurotransmitter that stimulates skeletal muscle cells

Accepted Answer

A)  sodium ions
B)  acetylcholinesterase
C)  acetylcholine
D)  synaptic cleft
E)  calcium ionsF) action potentialG) A) and B)
H) C) and D)

Question 15

The effect of the neurotransmitter on the muscle cell membrane is to temporarily modify its permeability of ions such as Na⁺ and K⁺.

Accepted Answer

A) True 
 B)False

Question 16

Match the following:
-Primary action of the erector spinae

Accepted Answer

A)  inversion
B)  flexion
C)  rotation
D)  supination
E)  abductionF) adductionG) plantar flexionH) extensionI) A) and E)
J) B) and G)

Question 17

Which muscle group includes the biceps femoris, semimembranosus, and semitendinosus?

Accepted Answer

A)   abdominal muscles
B)   quadriceps group
C)   adductor group
D)   fibularis muscles
E)   hamstring groupF) A) and D)
G) C) and D)

Question 18

Which muscle forms the curved calf of the posterior leg?

Accepted Answer

A)   fibularis longus
B)   gastrocnemius
C)   rectus femoris
D)   tibialis anterior
E)   soleusF) A) and B)
G) B) and D)

Question 19

One neuron and all the skeletal muscles it stimulates is known as a ________.

Accepted Answer

A)   sarcoplasmic reticulum
B)   motor unit
C)   synaptic cleft
D)   neuromuscular junctionE) C) and D)
F) B) and C)

Question 20

What is acetylcholine?

Accepted Answer

A)   an ion pump on the postsynaptic membrane
B)   a source of energy for muscle contraction
C)   a component of thick myofilaments
D)   an oxygen-binding protein
E)   a neurotransmitter that stimulates skeletal muscle to contractF) B) and C)
G) A) and E)

Exam 6: The Muscular System

Which term does NOT describe smooth muscle cells?

Correct AnswerverifiedShow Answer

What is acetylcholine?

Correct AnswerverifiedShow Answer

One neuron and all the skeletal muscles it stimulates is known as a ________.

Correct AnswerverifiedShow Answer

Match the following: -Specific neurotransmitter that stimulates skeletal muscle cells

Correct AnswerverifiedShow Answer

The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the ________.

Correct AnswerverifiedShow Answer

Match the following: -Electrical current that travels the length of the sarcolemma that results in the contraction of the muscle fiber

Correct AnswerverifiedShow Answer

Which muscle group includes the biceps femoris, semimembranosus, and semitendinosus?

Correct AnswerverifiedShow Answer

Match the following: -The movement of a limb away from the body midline

Correct AnswerverifiedShow Answer

Sandra is playing the piano for her recital. Which muscle is NOT involved in the movement of her hands and/or fingers?

Correct AnswerverifiedShow Answer

The effect of the neurotransmitter on the muscle cell membrane is to temporarily modify its permeability of ions such as Na⁺ and K⁺.

Correct AnswerverifiedShow Answer

Match the following: -Muscle tissue that activates arrector pili muscles to stand hairs on end

Correct AnswerverifiedShow Answer

Isometric contractions produce movement when filaments slide past one another and the muscle shortens.

Correct AnswerverifiedShow Answer

Which muscle forms the curved calf of the posterior leg?

Correct AnswerverifiedShow Answer

Which one of the following is NOT a criterion generally used in naming muscles?

Correct AnswerverifiedShow Answer

Which of the following muscles acts as a synergist to masseter and closes the jaw?

Correct AnswerverifiedShow Answer

Match the following: -Primary action of the erector spinae

Correct AnswerverifiedShow Answer

The type of muscle tissue pictured in Figure 6.3 is ________.

Correct AnswerverifiedShow Answer

The deltoid is a prime mover of arm adduction.

Correct AnswerverifiedShow Answer

Supination and pronation refer to up and down movements of the foot at the ankle.

Correct AnswerverifiedShow Answer

Match the following: -Muscle tissue that maintains posture, body position, and stabilizes joints

Correct AnswerverifiedShow Answer

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