Question 1

The type of skeleton that is usually composed of either a calcium-containing shell or chitin is a(n)

Accepted Answer

A)   endoskeleton.
B)   exoskeleton.
C)   hydrostatic skeleton.
D)   gastrovascular cavity.
E)   vascular canal.F) A) and E)
G) None of the above

Question 2

An individual skeletal muscle is defined as separate from others in part by the connective tissue sheath which wraps it.

Accepted Answer

A) True 
 B)False

Question 3

After a muscle cell contracts,which of the following must occur for the muscle to stop contracting?

Accepted Answer

A)   Calcium ions must be pumped back into the endoplasmic reticulum.
B)   Calcium ions must flow out of the endoplasmic reticulum.
C)   Calcium ions must flow into the muscle cell.
D)   Calcium ions must flow out of the muscle cell.
E)   Calcium ions must be pumped out of the muscle cell.F) All of the above
G) B) and C)

Question 4

The long bones of the human body begin as cartilaginous structures in embryos.

Accepted Answer

A) True 
 B)False

Question 5

Which are functions of the vertebrate skeleton?

Accepted Answer

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

Question 6

If you were to cut the biceps so that it no longer had an attachment to bone,why would this limit motion of the upper arm?

Accepted Answer

A)   The biceps and triceps antagonize one another in the motion of the arm; cutting removes one antagonist.
B)   The biceps is where arm connects to all relevant nerve cells.
C)   The biceps is the main muscle for moving the arm.
D)   The other arm muscles all connect to the biceps and would also become detatched as a result.
E)   None of the answer choices are correct.F) A) and B)
G) None of the above

Question 7

The type of skeleton that is an internal support structure is a(n)

Accepted Answer

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

Question 8

Due to the lack of moderate stress on the skeleton,a bedridden person is at risk of which of the following?

Accepted Answer

A)   rheumatoid arthritis and muscular degeneration
B)   osteoarthritis and tendon damage
C)   osteoporosis and muscle degeneration
D)   cartilage growth and a sprain
E)   anemia and cartilage degradationF) B) and C)
G) A) and D)

Question 9

Which of the following describes the role of myosin in muscle contraction?

Accepted Answer

A)   ATP forms a bridge binding actin to myosin.
B)   Actin heads bend when attached to myosin.
C)   Calcium ions form a bridge, moving actin along myosin.
D)   Myosin heads bend when attached to actin.
E)   Myosin synthesizes new strands of actin, lengthening the muscle.F) None of the above
G) A) and D)

Question 10

The long bones of the human body elongate during development via growth plates at their ends.

Accepted Answer

A) True 
 B)False

Question 11

Tendons connect _______ to _______.

Accepted Answer

A)   muscle; bone
B)   ligaments; bone
C)   muscle; muscle
D)   bone; bone
E)   cartilage; boneF) A) and E)
G) A) and D)

Question 12

The vertebrae in descending order from the skull are

Accepted Answer

A)   cervical, thoracic, and lumbar.
B)   lumbar, thoracic, and cervical.
C)   cervical, lumbar, and thoracic.
D)   thoracic, lumbar, and cervical.
E)   lumbar, cervical, and thoracic.F) C) and D)
G) None of the above

Question 13

Without its endoskeleton,the vertebrate body would be without support.

Accepted Answer

A) True 
 B)False

Question 14

A sprain is a stretched or torn

Accepted Answer

A)   ligament.
B)   tendon.
C)   muscle.
D)   neuron.
E)   vein.F) C) and D)
G) B) and D)

Question 15

Greater force of contraction comes when

Accepted Answer

A)   more motor units are stimulated.
B)   motor units are stimulated for a longer time.
C)   more ATP is available.
D)   motor units have few muscle fibers per unit.
E)   sacromeres are longer.F) B) and E)
G) A) and B)

Question 16

The biceps has the triceps for an antagonist.

Accepted Answer

A) True 
 B)False

Question 17

Antagonistic pairs of muscles work together to bend a structure.

Accepted Answer

A) True 
 B)False

Question 18

Bones have blood vessels attached to their surfaces but not penetrating them.

Accepted Answer

A) True 
 B)False

Question 19

How can humans survive if they have an inactive gene that encodes a nonfunctional myosin protein?

Accepted Answer

A)   We have over 40 closely related myosin genes.
B)   Myosin is not essential for life.
C)   Myosin participates in several processes in the cell.
D)   Other proteins in the body can do the same thing as myosin.
E)   Other primates have the same nonfunctional myosin protein and survive.F) B) and C)
G) D) and E)

Question 20

Connective tissue of the musculoskeletal system includes

Accepted Answer

A)   ligaments.
B)   bone.
C)   cartilage.
D)   tendons.
E)   All of the answer choices are correct.F) A) and B)
G) C) and D)

Exam 29: The Skeletal and Muscular Systems

After a muscle cell contracts,which of the following must occur for the muscle to stop contracting?

Correct AnswerverifiedShow Answer

Which of the following describes the role of myosin in muscle contraction?

Correct AnswerverifiedShow Answer

The type of skeleton that is an internal support structure is a(n)

Correct AnswerverifiedShow Answer

Connective tissue of the musculoskeletal system includes

Correct AnswerverifiedShow Answer

Tendons connect _______ to _______.

Correct AnswerverifiedShow Answer

Due to the lack of moderate stress on the skeleton,a bedridden person is at risk of which of the following?

Correct AnswerverifiedShow Answer

The vertebrae in descending order from the skull are

Correct AnswerverifiedShow Answer

Which are functions of the vertebrate skeleton?

Correct AnswerverifiedShow Answer

A sprain is a stretched or torn

Correct AnswerverifiedShow Answer

An individual skeletal muscle is defined as separate from others in part by the connective tissue sheath which wraps it.

Correct AnswerverifiedShow Answer

The long bones of the human body elongate during development via growth plates at their ends.

Correct AnswerverifiedShow Answer

The biceps has the triceps for an antagonist.

Correct AnswerverifiedShow Answer

The type of skeleton that is usually composed of either a calcium-containing shell or chitin is a(n)

Correct AnswerverifiedShow Answer

Without its endoskeleton,the vertebrate body would be without support.

Correct AnswerverifiedShow Answer

If you were to cut the biceps so that it no longer had an attachment to bone,why would this limit motion of the upper arm?

Correct AnswerverifiedShow Answer

The long bones of the human body begin as cartilaginous structures in embryos.

Correct AnswerverifiedShow Answer

Greater force of contraction comes when

Correct AnswerverifiedShow Answer

How can humans survive if they have an inactive gene that encodes a nonfunctional myosin protein?

Correct AnswerverifiedShow Answer

Bones have blood vessels attached to their surfaces but not penetrating them.

Correct AnswerverifiedShow Answer

Antagonistic pairs of muscles work together to bend a structure.

Correct AnswerverifiedShow Answer

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Tendons connect _ to _.

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