Question 1

What is the deltoid muscle shaped like?

Accepted Answer

A)  a long thin line 
B)  a square 
C)  a triangle 
D)  a circle 
E)  a trapezoid 
A)  a long thin line 
B)  a square 
C)  a triangle 
D)  a circle 
E)  a trapezoid

Question 2

What is the name of the muscle that is responsible for blinking and winking?

Accepted Answer

A)  latissimus dorsi 
B)  trapezius 
C)  pectoralis major 
D)  orbicularis oculi 
E)  extensor digitorum 
A)  latissimus dorsi 
B)  trapezius 
C)  pectoralis major 
D)  orbicularis oculi 
E)  extensor digitorum

Question 3

Of the three pathways for obtaining ATP for muscle contraction, which one requires oxygen?

Accepted Answer

A)  only the creatine phosphate pathway 
B)  only fermentation 
C)  only respiration 
D)  fermentation and respiration 
E)  the creatine phosphate pathway and fermentation 
A)  only the creatine phosphate pathway 
B)  only fermentation 
C)  only respiration 
D)  fermentation and respiration 
E)  the creatine phosphate pathway and fermentation

Question 4

What does the word brevis mean when referring to a muscle?

Accepted Answer

A)  large 
B)  small 
C)  huge 
D)  long 
E)  short 
A)  large 
B)  small 
C)  huge 
D)  long 
E)  short

Question 5

Which of the following does not occur when a muscle fatigues?

Accepted Answer

A)  Its energy reserves are depleted. 
B)  Stimulation continues. 
C)  Tetanus is achieved. 
D)  Acetylcholine is crossing the synaptic cleft. 
E)  The muscle relaxes. 
A)  Its energy reserves are depleted. 
B)  Stimulation continues. 
C)  Tetanus is achieved. 
D)  Acetylcholine is crossing the synaptic cleft. 
E)  The muscle relaxes.

Question 6

Which way does the adductor longus move the thigh?

Accepted Answer

A)  away from the midline 
B)  toward the midline 
C)  in a circle 
D)  in a cone 
E)  towards the back 
A)  away from the midline 
B)  toward the midline 
C)  in a circle 
D)  in a cone 
E)  towards the back

Question 7

A muscle fiber is made up of many

Accepted Answer

A)  muscle cells. 
B)  T tubules. 
C)  myofibrils. 
D)  fascicles. 
E)  bursa. 
A)  muscle cells. 
B)  T tubules. 
C)  myofibrils. 
D)  fascicles. 
E)  bursa.

Question 8

Of the three types of muscle tissue, which is voluntary?

Accepted Answer

A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
D)  both smooth and skeletal 
E)  both cardiac and skeletal Skeletal muscle is voluntary. 
A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
D)  both smooth and skeletal 
E)  both cardiac and skeletal Skeletal muscle is voluntary.

Question 9

Which of the following does not occur when you are very, very cold?

Accepted Answer

A)  More blood flows to the surface of the body. 
B)  Smooth muscle contracts inside the blood vessels supplying the skin. 
C)  The arrector pili muscles contract. 
D)  Shivering occurs. 
E)  You get goose bumps. 
A)  More blood flows to the surface of the body. 
B)  Smooth muscle contracts inside the blood vessels supplying the skin. 
C)  The arrector pili muscles contract. 
D)  Shivering occurs. 
E)  You get goose bumps.

Question 10

Which of the following does not attach to the sternocleidomastoid muscle?

Accepted Answer

A)  rib 
B)  clavicle 
C)  sternum 
D)  mastoid process 
E)  skull 
A)  rib 
B)  clavicle 
C)  sternum 
D)  mastoid process 
E)  skull

Question 11

What is the reservoir for Ca2+ in the body?

Accepted Answer

A)  muscles 
B)  bones 
C)  liver 
D)  brain 
E)  blood 
A)  muscles 
B)  bones 
C)  liver 
D)  brain 
E)  blood

Question 12

Of the three pathways for supplying ATP to the muscle, which pathways) do slow-twitch fibers prefer?

Accepted Answer

A)  the creatine phosphate pathway 
B)  fermentation 
C)  aerobic respiration 
D)  the creatine phosphate pathway or fermentation 
E)  the creatine phosphate pathway or aerobic respiration 
A)  the creatine phosphate pathway 
B)  fermentation 
C)  aerobic respiration 
D)  the creatine phosphate pathway or fermentation 
E)  the creatine phosphate pathway or aerobic respiration

Question 13

Which of the following is not a function of skeletal muscles?

Accepted Answer

A)  pumping of blood throughout the body 
B)  support 
C)  movement of bones 
D)  maintenance of body temperature 
E)  protection of internal organs 
A)  pumping of blood throughout the body 
B)  support 
C)  movement of bones 
D)  maintenance of body temperature 
E)  protection of internal organs

Question 14

Explain the differences between fast-twitch and slow-twitch muscle fibers.

Accepted Answer

Fast-twitch muscle fibers are usually an

Question 15

One motor neuron activates one muscle fiber.

Accepted Answer

A) True 
 B)False

Question 16

Of the three types of muscle tissue, which is not striated?

Accepted Answer

A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
D)  skeletal and smooth lack striations 
E)  cardiac and smooth lack striations 
A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
D)  skeletal and smooth lack striations 
E)  cardiac and smooth lack striations

Question 17

Each actin molecule is shaped like a golf club, with a straight portion ending in a globular head.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is not a source of ATP for muscle contraction?

Accepted Answer

A)  ATP in the blood 
B)  ATP produced in the cell 
C)  the creatine phosphate pathway 
D)  fermentation 
E)  aerobic respiration 
A)  ATP in the blood 
B)  ATP produced in the cell 
C)  the creatine phosphate pathway 
D)  fermentation 
E)  aerobic respiration

Question 19

The origin of a muscle is on a stationary bone.

Accepted Answer

A) True 
 B)False

Question 20

What is happening during the latent period of a muscle twitch?

Accepted Answer

A)  The muscle relaxes and returns to its former length. 
B)  Fresh ATP binds to the myosin, causing it to return to its resting position. 
C)  ADP and phosphate are released, and the power stroke of the contraction occurs. 
D)  The myosin-actin cross-bridges are broken and the sarcomere shortens. 
E)  The neurotransmitter is diffusing across the synaptic cleft, causing an electrical signal in the muscle cell. 
A)  The muscle relaxes and returns to its former length. 
B)  Fresh ATP binds to the myosin, causing it to return to its resting position. 
C)  ADP and phosphate are released, and the power stroke of the contraction occurs. 
D)  The myosin-actin cross-bridges are broken and the sarcomere shortens. 
E)  The neurotransmitter is diffusing across the synaptic cleft, causing an electrical signal in the muscle cell.

Exam 13: Muscular System

What is the deltoid muscle shaped like?

What is the name of the muscle that is responsible for blinking and winking?

Of the three pathways for obtaining ATP for muscle contraction, which one requires oxygen?

What does the word brevis mean when referring to a muscle?

Which of the following does not occur when a muscle fatigues?

Which way does the adductor longus move the thigh?

A muscle fiber is made up of many

Of the three types of muscle tissue, which is voluntary?

Which of the following does not occur when you are very, very cold?

Which of the following does not attach to the sternocleidomastoid muscle?

What is the reservoir for Ca2+ in the body?

Of the three pathways for supplying ATP to the muscle, which pathways) do slow-twitch fibers prefer?

Which of the following is not a function of skeletal muscles?

Explain the differences between fast-twitch and slow-twitch muscle fibers.

One motor neuron activates one muscle fiber.

Of the three types of muscle tissue, which is not striated?

Each actin molecule is shaped like a golf club, with a straight portion ending in a globular head.

Which of the following is not a source of ATP for muscle contraction?

The origin of a muscle is on a stationary bone.

What is happening during the latent period of a muscle twitch?

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