Question 1

The neurotransmitter released from the nerve terminus at the neuromuscular junction is ___________.

Accepted Answer

A)  troponin
B)  Ca2+
C)  tropomyosin
D)  acetylcholineE) A) and B)
F) A) and C) D

Question 2

You are investigating the scene of a hit and run where somebody's pet dog was killed.It is a very hot day so the dog's body temperature is unlikely to yield any important information regarding the time of death.The dog's limbs are movable and there is no significant smell of rotting flesh.What is the best guess of the time of death?

Accepted Answer

A)  within the last 10 minutes
B)  within the last 2 hours
C)  3-4 hours ago
D)  24 hours agoE) All of the above
F) A) and B)

Question 3

Which of the following regarding the Haversian System is false?

Accepted Answer

A)  It keeps osteocytes alive.
B)  Haversian canals may contain nerve fibers.
C)  Haversian canals run parallel to the length of long bone.
D)  It contains the marrow cavity.E) A) and B)
F) A) and C)

Question 4

Utilizing more motor units for stronger muscle contractions is called

Accepted Answer

A)  fast-twitching.
B)  fatigue.
C)  aerobic capacity.
D)  recruitment.
E)  insertion.F) B) and E)
G) C) and D)

Question 5

Which of the following is not true about vertebrate bone?

Accepted Answer

A)  consist of cells and an extracellular matrix containing collagen fibers
B)  contain hydroxyapatite crystals
C)  contain sarcomere units
D)  contain blood vessels
E)  capable of growth and remodelingF) A) and D)
G) B) and E) C

Question 6

The structure causing the muscle depolarization to travel deep into the muscle fiber is the _______.

Accepted Answer

A)  T tubule
B)  sarcoplasmic reticulum
C)  motor unit
D)  sarcomereE) All of the above
F) A) and C)

Question 7

All of the following statements about exoskeletons are correct except

Accepted Answer

A)  exoskeletons are made of chitin.
B)  muscles are attached to the exoskeleton.
C)  exoskeletons do not limit growth because they are flexible.
D)  exoskeletons are shed by many arthropods in a process called molting.
E)  chitin is a polysaccharidE.F) B) and D)
G) A) and B)

Question 8

The chemical released by somatic motor neurons is

Accepted Answer

A)  noradrenaline.
B)  adrenaline.
C)  acetylcholine.
D)  sarcocholine.
E)  sarcoadrenalinE.F) D) and E)
G) A) and E)

Question 9

Trout and eels have to move efficiently through their watery environment.The difference between how a trout and an eel move through water is

Accepted Answer

A)  the eel pushes against the water with the posterior portion of its body while the trout uses its entire body for pushing against the water.
B)  the trout pushes against the water with the posterior portion of its body while the eel uses its entire body for pushing against the water.
C)  the eel uses only its dorsal fin while the trout uses it pelvic and dorsal fin for pushing through the water.
D)  the eel alternates from anterior pushing to posterior pushing with its body while the trout uses only its posterior body.
E)  the eel is able to move more efficiently because of its thick slime coating which the trout does not havE.F) B) and E)
G) None of the above

Question 10

The muscles that move the eye have a high proportion of fast-twitch fibers and reach maximum tension very fast.These fibers belong to the class of __________ fibers.

Accepted Answer

A)  type I
B)  type II
C)  type III
D)  type IV
E)  type VF) B) and C)
G) D) and E)

Question 11

The mammalian jaw is an example of what kind of moveable joint?

Accepted Answer

A)  hinge joint
B)  combination joint
C)  gliding joint
D)  ball-and-socket jointE) A) and C)
F) All of the above

Question 12

The use-dependent decrease in the ability of a muscle to generate force is called

Accepted Answer

A)  oxygen debt.
B)  fatigue.
C)  tetanus.
D)  hypertrophy.E) A) and B)
F) B) and C)

Question 13

You witness a demonstration of a martial arts master breaking a large concrete block with his hand.Besides mastering technique,what is another benefit of the repetitive practice of breaking concrete.

Accepted Answer

A)  Repetitive stress on the long bones will solidify cartilage.
B)  The haversian canal system will supply more blood and strengthen the bone.
C)  The repetitive stress on the long bones will be remodeled and strengthened.
D)  The marrow cavity will solidify and strengthen the bone.E) A) and C)
F) B) and D)

Question 14

Which of the following statements relating to skeletal muscle and their functions is not correct?

Accepted Answer

A)  Skeletal muscles are attached to bones by ligaments.
B)  The origin of a skeletal muscle remains relatively stationary.
C)  The end of the muscle called the insertion is attached to the bone that moves when the muscle contracts.
D)  Muscles that cause the same action at a joint are referred to as synergists.
E)  Muscles that produce opposing actions are called antagonists.F) B) and C)
G) B) and E) A

Question 15

In arthropods,locomotion is accomplished by muscles that work against

Accepted Answer

A)  each other.
B)  the exoskeleton.
C)  a hydrostatic skeleton.
D)  mineralized bones.
E)  the pseudocoel.F) B) and E)
G) None of the above

Question 16

Which of the following is the smallest unit in terms of size?

Accepted Answer

A)  fascicle
B)  myofibril
C)  fiber
D)  nuclei
E)  myofilamentsF) C) and D)
G) D) and E)

Question 17

By weight training,skeletal muscles grow in size.Cells do not increase in number because they do not divide,but increase in size by a process called

Accepted Answer

A)  hypertrophy.
B)  tetanus.
C)  oxygen debt.
D)  summation.
E)  isometry.F) B) and E)
G) C) and D)

Question 18

Human skeleton is a typical vertebrate

Accepted Answer

A)  endoskeleton.
B)  exoskeleton.
C)  hydraulic skeleton.
D)  axial skeleton only.
E)  appendicular skeleton only.F) D) and E)
G) A) and C)

Question 19

Which of the following animals have bone that contains no osteocytes?

Accepted Answer

A)  dog
B)  human
C)  fish
D)  frog
E)  lizardF) C) and D)
G) D) and E)

Question 20

Sarin gas is an acetylcholinesterase inhibitor.What is the likely description of how a person would die if inhaling this poisonous gas?

Accepted Answer

A)  convulsion
B)  paralysis of skeletal muscles
C)  suffocation via tetanus of the respiratory muscles
D)  suffocation via paralysis of the respiratory musclesE) None of the above
F) A) and D)

Exam 47: The Musculoskeletal System

The neurotransmitter released from the nerve terminus at the neuromuscular junction is ___________.

Correct Answer
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D

Correct Answer
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Which of the following regarding the Haversian System is false?

Correct Answer
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Utilizing more motor units for stronger muscle contractions is called

Correct Answer
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Which of the following is not true about vertebrate bone?

Correct Answer
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C

The structure causing the muscle depolarization to travel deep into the muscle fiber is the _______.

Correct Answer
verified

All of the following statements about exoskeletons are correct except

Correct Answer
verified

The chemical released by somatic motor neurons is

Correct Answer
verified

Trout and eels have to move efficiently through their watery environment.The difference between how a trout and an eel move through water is

Correct Answer
verified

The muscles that move the eye have a high proportion of fast-twitch fibers and reach maximum tension very fast.These fibers belong to the class of __________ fibers.

Correct Answer
verified

The mammalian jaw is an example of what kind of moveable joint?

Correct Answer
verified

The use-dependent decrease in the ability of a muscle to generate force is called

Correct Answer
verified

You witness a demonstration of a martial arts master breaking a large concrete block with his hand.Besides mastering technique,what is another benefit of the repetitive practice of breaking concrete.

Correct Answer
verified

Which of the following statements relating to skeletal muscle and their functions is not correct?

Correct Answer
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A

In arthropods,locomotion is accomplished by muscles that work against

Correct Answer
verified

Which of the following is the smallest unit in terms of size?

Correct Answer
verified

By weight training,skeletal muscles grow in size.Cells do not increase in number because they do not divide,but increase in size by a process called

Correct Answer
verified

Human skeleton is a typical vertebrate

Correct Answer
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Which of the following animals have bone that contains no osteocytes?

Correct Answer
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Sarin gas is an acetylcholinesterase inhibitor.What is the likely description of how a person would die if inhaling this poisonous gas?

Correct Answer
verified

Exam 47: The Musculoskeletal System

The neurotransmitter released from the nerve terminus at the neuromuscular junction is ___________.

Correct AnswerverifiedD

Correct AnswerverifiedShow Answer

Which of the following regarding the Haversian System is false?

Correct AnswerverifiedShow Answer

Utilizing more motor units for stronger muscle contractions is called

Correct AnswerverifiedShow Answer

Which of the following is not true about vertebrate bone?

Correct AnswerverifiedC

The structure causing the muscle depolarization to travel deep into the muscle fiber is the _______.

Correct AnswerverifiedShow Answer

All of the following statements about exoskeletons are correct except

Correct AnswerverifiedShow Answer

The chemical released by somatic motor neurons is

Correct AnswerverifiedShow Answer

Trout and eels have to move efficiently through their watery environment.The difference between how a trout and an eel move through water is

Correct AnswerverifiedShow Answer

The muscles that move the eye have a high proportion of fast-twitch fibers and reach maximum tension very fast.These fibers belong to the class of __________ fibers.

Correct AnswerverifiedShow Answer

The mammalian jaw is an example of what kind of moveable joint?

Correct AnswerverifiedShow Answer

The use-dependent decrease in the ability of a muscle to generate force is called

Correct AnswerverifiedShow Answer

You witness a demonstration of a martial arts master breaking a large concrete block with his hand.Besides mastering technique,what is another benefit of the repetitive practice of breaking concrete.

Correct AnswerverifiedShow Answer

Which of the following statements relating to skeletal muscle and their functions is not correct?

Correct AnswerverifiedA

In arthropods,locomotion is accomplished by muscles that work against

Correct AnswerverifiedShow Answer

Which of the following is the smallest unit in terms of size?

Correct AnswerverifiedShow Answer

By weight training,skeletal muscles grow in size.Cells do not increase in number because they do not divide,but increase in size by a process called

Correct AnswerverifiedShow Answer

Human skeleton is a typical vertebrate

Correct AnswerverifiedShow Answer

Which of the following animals have bone that contains no osteocytes?

Correct AnswerverifiedShow Answer

Sarin gas is an acetylcholinesterase inhibitor.What is the likely description of how a person would die if inhaling this poisonous gas?

Correct AnswerverifiedShow Answer

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C

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A

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