Question 1

Where are blood cells produced?

Accepted Answer

A)   in red marrow inside of bones
B)   in yellow marrow inside of bones
C)   in joints by chondrocytes
D)   in the liver
E)   in the spleenF) None of the above
G) C) and D)

Question 2

The molecule that rapidly replenishes ATP at the beginning of muscle activity is

Accepted Answer

A)   actin.
B)   creatine phosphate.
C)   dystrophin.
D)   acetylcholine.
E)   myosin.F) C) and D)
G) D) and E)

Question 3

In an anatomy lab,you are shown a skeleton from a sea cucumber,with its internal calcium-rich spines.You would call this a(n)

Accepted Answer

A)   exoskeleton.
B)   hydrostatic skeleton.
C)   gastrovascular cavity.
D)   endoskeleton.
E)   vascular canal.F) A) and D)
G) A) and E)

Question 4

If you injected a calcium-channel blocking chemical into muscle cells,what would probably happen?

Accepted Answer

A)   The muscle cell would be unable to communicate with nerves.
B)   The muscle cell would be unable to contract.
C)   The muscle cell would relax more slowly.
D)   The muscle cell would die.
E)   The muscle cell would divide.F) B) and C)
G) A) and E)

Question 5

Calcium ions are required for muscular contraction.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following will be true of the muscles of a bedridden person?

Accepted Answer

A)   Calcium levels and ATP production will be lower than normal.
B)   Creatine kinase production will be lower than normal.
C)   ATP production will be lower than normal.
D)   Calcium levels and creatine kinase production will be lower than normal.
E)   ATP and creatine phosphate production will be lower than normal.F) D) and E)
G) A) and D)

Question 7

How are the biceps and triceps attached to the arm so that they can act in opposition?

Accepted Answer

A)   The biceps attaches by tendons, the triceps by ligaments.
B)   Both attach by tendons.
C)   The biceps attaches by ligaments, the triceps by tendons.
D)   Both attach by ligaments.
E)   None of the answer choices are correct.F) A) and B)
G) A) and E)

Question 8

A thick filament of muscle is composed primarily of the protein

Accepted Answer

A)   pectin.
B)   myoglobin.
C)   hemoglobin.
D)   actin.
E)   myosin.F) A) and B)
G) None of the above

Question 9

Weak muscular contraction could be due to either poor binding of actin and myosin or to insufficient calcium available to stimulate contraction.

Accepted Answer

A) True 
 B)False

Question 10

If you wanted to genetically engineer a goat so that it had finer muscle control than other goats,what would be your goal?

Accepted Answer

A)   fewer muscle fibers per motor neuron
B)   more motor neurons
C)   more muscle fibers
D)   larger sarcomeres
E)   longer motor neuronsF) A) and D)
G) A) and E)

Question 11

A thin filament of muscle is composed primarily of the protein

Accepted Answer

A)   hemoglobin.
B)   myosin.
C)   myoglobin.
D)   actin.
E)   pectin.F) C) and D)
G) B) and E)

Question 12

The temporalis muscle is critical for chewing.

Accepted Answer

A) True 
 B)False

Question 13

When a motor neuron stimulates a muscle fiber,the fiber contracts.

Accepted Answer

A) True 
 B)False

Question 14

If you had a patient whose body produced a large excess of calcitonin,which skeletal function would be first to be impaired?

Accepted Answer

A)   support
B)   movement
C)   protection of internal structures
D)   mineral storage
E)   All of the answer choices are correct.F) All of the above
G) A) and D)

Question 15

A fast-twitch muscle fiber

Accepted Answer

A)   uses ATP quickly in short, fast contractions.
B)   has many capillaries.
C)   is rich in myoglobin.
D)   works aerobically.
E)   All of the answer choices are correct.F) A) and D)
G) A) and C)

Question 16

You are talking to a 54-year-old patient who has joint pain.You order a scan to look at the cartilage in the patient's painful joints because you suspect that cartilage has worn away,leading to

Accepted Answer

A)   acromegaly.
B)   rheumatoid arthritis.
C)   scoliosis.
D)   osteoporosis.
E)   osteoarthritis.F) All of the above
G) C) and D)

Question 17

After death,muscles remain in a stiff position for several hours.This stiff position is called

Accepted Answer

A)   osteoarthritis.
B)   rheumatoid arthritis.
C)   rigor mortis.
D)   osteoporosis.
E)   flaccid paralysis.F) A) and C)
G) A) and D)

Question 18

The breast muscle of a wild duck is dark,while that of a domesticated chicken is white.What would be true of breast muscle in a domesticated chicken?

Accepted Answer

A)   predominately fast-twitch muscles with abundant capillaries and mitochondria
B)   predominately fast-twitch muscles with few capillaries or mitochondria
C)   predominately slow-twitch muscles with abundant capillaries and mitochondria
D)   predominately slow-twitch muscles with few capillaries or mitochondria
E)   None of the answer choices is correct.F) D) and E)
G) None of the above

Question 19

You would expect more glycogen reserves in a muscle which is used less,since more could build up as it is not being used as much.

Accepted Answer

A) True 
 B)False

Question 20

If you were starting a company to produce cells,tissues,and extracellular matrix materials,what could your company produce from cultures of chondrocytes?

Accepted Answer

A)   fibrin
B)   collagen
C)   elastin
D)   fibrin and collagen
E)   collagen and elastinF) A) and D)
G) A) and C)

Exam 29: The Skeletal and Muscular Systems

If you wanted to genetically engineer a goat so that it had finer muscle control than other goats,what would be your goal?

Correct AnswerverifiedShow Answer

A thick filament of muscle is composed primarily of the protein

Correct AnswerverifiedShow Answer

A thin filament of muscle is composed primarily of the protein

Correct AnswerverifiedShow Answer

Which of the following will be true of the muscles of a bedridden person?

Correct AnswerverifiedShow Answer

Where are blood cells produced?

Correct AnswerverifiedShow Answer

When a motor neuron stimulates a muscle fiber,the fiber contracts.

Correct AnswerverifiedShow Answer

After death,muscles remain in a stiff position for several hours.This stiff position is called

Correct AnswerverifiedShow Answer

You would expect more glycogen reserves in a muscle which is used less,since more could build up as it is not being used as much.

Correct AnswerverifiedShow Answer

If you were starting a company to produce cells,tissues,and extracellular matrix materials,what could your company produce from cultures of chondrocytes?

Correct AnswerverifiedShow Answer

The temporalis muscle is critical for chewing.

Correct AnswerverifiedShow Answer

A fast-twitch muscle fiber

Correct AnswerverifiedShow Answer

You are talking to a 54-year-old patient who has joint pain.You order a scan to look at the cartilage in the patient's painful joints because you suspect that cartilage has worn away,leading to

Correct AnswerverifiedShow Answer

How are the biceps and triceps attached to the arm so that they can act in opposition?

Correct AnswerverifiedShow Answer

In an anatomy lab,you are shown a skeleton from a sea cucumber,with its internal calcium-rich spines.You would call this a(n)

Correct AnswerverifiedShow Answer

Calcium ions are required for muscular contraction.

Correct AnswerverifiedShow Answer

If you injected a calcium-channel blocking chemical into muscle cells,what would probably happen?

Correct AnswerverifiedShow Answer

The breast muscle of a wild duck is dark,while that of a domesticated chicken is white.What would be true of breast muscle in a domesticated chicken?

Correct AnswerverifiedShow Answer

The molecule that rapidly replenishes ATP at the beginning of muscle activity is

Correct AnswerverifiedShow Answer

Weak muscular contraction could be due to either poor binding of actin and myosin or to insufficient calcium available to stimulate contraction.

Correct AnswerverifiedShow Answer

If you had a patient whose body produced a large excess of calcitonin,which skeletal function would be first to be impaired?

Correct AnswerverifiedShow Answer

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