Question 1

What do fibromyalgia and amyotrophic lateral sclerosis have in common?

Accepted Answer

A)  The cause of both diseases is unknown. 
B)  In both diseases, antibodies destroy acetylcholine receptors. 
C)  Both are X-linked genetic diseases. 
D)  Both can be cured with antibiotics. 
E)  In both diseases, the protein dystrophin is absent. 
A)  The cause of both diseases is unknown. 
B)  In both diseases, antibodies destroy acetylcholine receptors. 
C)  Both are X-linked genetic diseases. 
D)  Both can be cured with antibiotics. 
E)  In both diseases, the protein dystrophin is absent. A

Question 2

When the nerve signal reaches the axon terminal what happens next?

Accepted Answer

A)  The muscle contracts. 
B)  The synaptic vesicles release neurotransmitter. 
C)  An electrical signal is formed that jumps the synaptic cleft. 
D)  H+ is pumped into the synaptic cleft. 
E)  Myosin is released from the axon terminal. 
A)  The muscle contracts. 
B)  The synaptic vesicles release neurotransmitter. 
C)  An electrical signal is formed that jumps the synaptic cleft. 
D)  H+ is pumped into the synaptic cleft. 
E)  Myosin is released from the axon terminal. B

Question 3

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. C

Question 4

The skeletal system assists the cardiovascular system by

Accepted Answer

A)  altering the pH of the blood. 
B)  activating vitamin D needed for calcium absorption. 
C)  producing hormones for calcium homeostasis. 
D)  pumping the blood. 
E)  producing the blood cells. 
A)  altering the pH of the blood. 
B)  activating vitamin D needed for calcium absorption. 
C)  producing hormones for calcium homeostasis. 
D)  pumping the blood. 
E)  producing the blood cells.

Question 5

Which part of the cardiovascular system does not include muscle?

Accepted Answer

A)  heart 
B)  arteries 
C)  veins 
D)  capillaries 
A)  heart 
B)  arteries 
C)  veins 
D)  capillaries

Question 6

Of the three types of muscle tissue,which has multinucleated fibers?

Accepted Answer

A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle

Question 7

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 8

What does troponin bind to and what happens when it binds?

Accepted Answer

A)  Ca2+, tropomyosin shifts 
B)  tropomyosin, the sarcomere relaxes 
C)  acetylcholine, the sarcome shortens 
D)  ATP, tropomyosin returns to normal position 
E)  T tubules, the sarcomere shortens 
A)  Ca2+, tropomyosin shifts 
B)  tropomyosin, the sarcomere relaxes 
C)  acetylcholine, the sarcome shortens 
D)  ATP, tropomyosin returns to normal position 
E)  T tubules, the sarcomere shortens

Question 9

Several of the structures in the muscle cell are given special names.For example,the cytoplasm of a muscle fiber is called the sarcoplasm.Which of the following is truly a unique structure to muscle cells (not just a renamed one)?

Accepted Answer

A)  cytoplasm 
B)  nucleus 
C)  endoplasmic reticulum 
D)  transverse (T) system 
E)  plasma membrane 
A)  cytoplasm 
B)  nucleus 
C)  endoplasmic reticulum 
D)  transverse (T) system 
E)  plasma membrane

Question 10

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 11

Which of the following is not a phase of a single muscle twitch?

Accepted Answer

A)  stimulation period 
B)  latent period 
C)  contraction period 
D)  relaxation period 
A)  stimulation period 
B)  latent period 
C)  contraction period 
D)  relaxation period

Question 12

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

Accepted Answer

A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle

Question 13

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 14

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

Accepted Answer

A)  myalgia 
B)  muscular dystrophy 
C)  myasthenia gravis 
D)  tendinitis 
E)  bursitis 
A)  myalgia 
B)  muscular dystrophy 
C)  myasthenia gravis 
D)  tendinitis 
E)  bursitis

Question 15

What muscle works in a pair with the biceps brachii?

Accepted Answer

A)  the triceps brachii 
B)  the trapezius 
C)  the masseter 
D)  the pectoralis major 
E)  the sartorius 
A)  the triceps brachii 
B)  the trapezius 
C)  the masseter 
D)  the pectoralis major 
E)  the sartorius

Question 16

Which of the following is not a term that refers to how muscles work?

Accepted Answer

A)  prime mover 
B)  synergists 
C)  antagonist 
D)  synergism 
E)  origin 
A)  prime mover 
B)  synergists 
C)  antagonist 
D)  synergism 
E)  origin

Question 17

Which of the following is not an energy source for muscle contraction?

Accepted Answer

A)  glycogen 
B)  triglycerides 
C)  glucose 
D)  fatty acids 
E)  starch 
A)  glycogen 
B)  triglycerides 
C)  glucose 
D)  fatty acids 
E)  starch

Question 18

Because the heart beats continuously,cardiac fibers never relax completely.

Accepted Answer

A) True 
 B)False

Question 19

Jillian is a cross country runner.She has predominantly slow-twitch muscle fibers.

Accepted Answer

A) True 
 B)False

Question 20

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

Exam 12: Muscular System

What do fibromyalgia and amyotrophic lateral sclerosis have in common?

When the nerve signal reaches the axon terminal what happens next?

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

The skeletal system assists the cardiovascular system by

Which part of the cardiovascular system does not include muscle?

Of the three types of muscle tissue,which has multinucleated fibers?

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

What does troponin bind to and what happens when it binds?

Several of the structures in the muscle cell are given special names.For example,the cytoplasm of a muscle fiber is called the sarcoplasm.Which of the following is truly a unique structure to muscle cells (not just a renamed one)?

What is the reservoir for Ca2+ in the body?

Which of the following is not a phase of a single muscle twitch?

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

What is the deltoid muscle shaped like?

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

What muscle works in a pair with the biceps brachii?

Which of the following is not a term that refers to how muscles work?

Which of the following is not an energy source for muscle contraction?

Because the heart beats continuously,cardiac fibers never relax completely.

Jillian is a cross country runner.She has predominantly slow-twitch muscle fibers.

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

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