Question 1

Which bones articulate at the joint stabilized by the rotator cuff?

Accepted Answer

A)   humerus and scapula
B)   coxal bone and femur
C)   radius and humerus
D)   femur and tibia
E)   scapula and clavicleF) A) and D)
G) D) and E)

Question 2

In a sarcomere, thick filaments are composed of _____ and thin filaments of _____.

Accepted Answer

A)   actin; myosin
B)   sarcoplasm; actin
C)   myosin; actin
D)   Z lines; T tubules
E)   myosin; sarcolemmaF) B) and E)
G) None of the above

Question 3

Which bone belongs to the appendicular skeleton?

Accepted Answer

A)   skull
B)   vertebra
C)   rib
D)   sternum
E)   scapulaF) C) and D)
G) D) and E)

Question 4

Your skeleton is a(n)

Accepted Answer

A)   exoskeleton.
B)   hydrostatic skeleton.
C)   cartilaginous skeleton.
D)   endoskeleton.
E)   osteon.F) A) and B)
G) A) and C)

Question 5

Which of these is mismatched?

Accepted Answer

A)   utricle - ear
B)   taste bud - tongue
C)   tympanic membrane - ear
D)   fovea - eye
E)   ossicles - jointsF) A) and D)
G) C) and D)

Question 6

You are taking notes in lecture, writing as fast as you can, when suddenly your hand become so stiff that you can't write any more! You pull the pencil from between your frozen fingers with your other hand, and after a few worried moments your hand is able to relax again. What happened?

Accepted Answer

A)   The muscles in your hand depleted their supply of ATP, and the myosin heads could not detach from actin.
B)   The muscles in your hand depleted their supply of acetylcholinesterase.
C)   The muscles in your hand depleted their supply of Ca2+, and the myosin heads could not attach to actin.
D)   The actin and myosin filaments in your hand muscles became detached from their Z lines.
E)   The motor neurons stimulating your hand muscles depleted their supply of acetylcholine.F) B) and C)
G) A) and E)

Question 7

The contractile units of skeletal muscle are the

Accepted Answer

A)   myofibrils.
B)   sarcomeres.
C)   sarcolemma.
D)   sarcoplasmic reticulum.
E)   osteons.F) A) and B)
G) A) and C)

Question 8

Which sense requires the stimulation of chemoreceptors?

Accepted Answer

A)   hearing
B)   smell
C)   balance
D)   vision
E)   touchF) A) and D)
G) B) and D)

Question 9

Which sense is found in all animals, and is thought to be the most primitive sense?

Accepted Answer

A)   photoreception
B)   mechanoreception
C)   chemoreception
D)   hearing
E)   proprioceptionF) B) and E)
G) B) and D)

Question 10

Which of these lists the structures, in the correct sequence, that light must pass through in order to reach the photoreceptors of the human eye?

Accepted Answer

A)   retina→lens→pupil→cornea
B)   lens→cornea→pupil→retina
C)   lens→pupil→cornea→retina
D)   cornea→lens→pupil→retina
E)   cornea→pupil→lens→retinaF) All of the above
G) B) and D)

Question 11

You can tell "up" from "down" even when your eyes are closed. This is due to your

Accepted Answer

A)   rotational equilibrium.
B)   statocysts.
C)   sense of hearing.
D)   lateral line system.
E)   gravitational equilibrium.F) None of the above
G) A) and B)

Question 12

Which of these statements about contracting muscles is incorrect?

Accepted Answer

A)   A contracting muscle shortens.
B)   A contracting muscle uses cellular energy.
C)   A contracting muscle may work as part of an antagonistic pair.
D)   A contracting muscle can only push, it cannot pull.
E)   A contracting muscle cannot push, it can only pull.F) B) and D)
G) D) and E)

Question 13

The structural unit of compact bone is the

Accepted Answer

A)   osteoclast.
B)   osteocyte.
C)   osteon.
D)   osteoblast.
E)   sarcomere.F) None of the above
G) A) and C)

Question 14

Skeletal muscles do not

Accepted Answer

A)   assist the movement of blood.
B)   store calcium and fat.
C)   help maintain body temperature.
D)   protect internal organs.
E)   enable the movement of body parts.F) A) and E)
G) All of the above

Question 15

In order to lift a book from a table, your _____ must contract; to put the book back down, the _____ must contract.

Accepted Answer

A)   meniscus; bursa
B)   biceps; triceps
C)   actin filament; myosin filament
D)   bursa; meniscus
E)   triceps; bicepsF) A) and B)
G) A) and C)

Question 16

Which statement about the spiral organ is incorrect?

Accepted Answer

A)   Its hair cells synapse with the cochlear nerve.
B)   Each part is responsive to a different pitch.
C)   It is found in the cochlea.
D)   It contains the sensory receptors for hearing.
E)   It has two main parts: the utricle and the saccule.F) B) and C)
G) C) and D)

Question 17

In the figure shown here, which of the following is the sclera?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) B) and C)
G) C) and D)

Question 18

Which of these puts the steps of sliding filament model of muscle contraction in the correct order?

Accepted Answer

A)   ATP is hydrolyzed as myosin heads bind the actin filament→myosin heads bind ATP→ADP + P are released and the myosin heads pull the actin filament
B)   Myosin heads bind ATP→ATP is hydrolyzed as myosin heads bind the actin filament→ADP + P are released and the myosin heads pull the actin filament.
C)   ADP + P are released and the myosin heads pull the actin filament→ATP is hydrolyzed as myosin heads bind the actin filament→myosin heads bind ATP.
D)   Myosin heads bind ATP→ ADP + P are released and the myosin heads pull the actin filament→ATP is hydrolyzed as myosin heads bind the actin filament.
E)   ATP is hydrolyzed as myosin heads bind the actin filament→ADP + P are released and the myosin heads pull the actin filament→myosin heads bind ATP.F) C) and D)
G) A) and D)

Question 19

The spaces in the ends of a long bone such as the femur contain

Accepted Answer

A)   yellow bone marrow.
B)   plasma.
C)   osteocytes.
D)   osteons.
E)   red bone marrow.F) All of the above
G) C) and D)

Question 20

If you want to prevent osteoporosis and strengthen muscles, your best approach would be to

Accepted Answer

A)   eat foods rich in vitamin A.
B)   exercise.
C)   take calcium supplements.
D)   lose weight.
E)   seek medical treatment.F) A) and B)
G) B) and E)

Exam 28: Sensory Input and Motor Output

Which sense requires the stimulation of chemoreceptors?

Correct AnswerverifiedShow Answer

If you want to prevent osteoporosis and strengthen muscles, your best approach would be to

Correct AnswerverifiedShow Answer

Your skeleton is a(n)

Correct AnswerverifiedShow Answer

In a sarcomere, thick filaments are composed of _____ and thin filaments of _____.

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedShow Answer

Which bone belongs to the appendicular skeleton?

Correct AnswerverifiedShow Answer

In order to lift a book from a table, your _____ must contract; to put the book back down, the _____ must contract.

Correct AnswerverifiedShow Answer

Skeletal muscles do not

Correct AnswerverifiedShow Answer

You can tell "up" from "down" even when your eyes are closed. This is due to your

Correct AnswerverifiedShow Answer

Which statement about the spiral organ is incorrect?

Correct AnswerverifiedShow Answer

The spaces in the ends of a long bone such as the femur contain

Correct AnswerverifiedShow Answer

You are taking notes in lecture, writing as fast as you can, when suddenly your hand become so stiff that you can't write any more! You pull the pencil from between your frozen fingers with your other hand, and after a few worried moments your hand is able to relax again. What happened?

Correct AnswerverifiedShow Answer

Which bones articulate at the joint stabilized by the rotator cuff?

Correct AnswerverifiedShow Answer

Which of these statements about contracting muscles is incorrect?

Correct AnswerverifiedShow Answer

The structural unit of compact bone is the

Correct AnswerverifiedShow Answer

Which of these puts the steps of sliding filament model of muscle contraction in the correct order?

Correct AnswerverifiedShow Answer

In the figure shown here, which of the following is the sclera?

Correct AnswerverifiedShow Answer

The contractile units of skeletal muscle are the

Correct AnswerverifiedShow Answer

Which of these lists the structures, in the correct sequence, that light must pass through in order to reach the photoreceptors of the human eye?

Correct AnswerverifiedShow Answer

Which sense is found in all animals, and is thought to be the most primitive sense?

Correct AnswerverifiedShow Answer

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In a sarcomere, thick filaments are composed of _ and thin filaments of _.

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In order to lift a book from a table, your _ must contract; to put the book back down, the _ must contract.

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