Lecture Exam Three: Chapter 13

Question 1

Which of the following are classifications of a sensory receptor by the type of stimulus?

Answer 1

1. mechanoreceptors
2. thermoreceptors
3. photoreceptors
4. chemoreceptors
5. nociceptors

Question 2

Which of the following are classifications of a sensory receptor by the stimulus location?

Answer 2

1. exteroceptors
2. interoceptors (visceroceptors)
3. proprioceptors

Question 3

Which of the following pairs of receptors appear to play complementary roles in hairy and hairless skin?

Answer 3

Meissner’s corpuscles and hair follicle receptors

Question 4

Which receptor type wasn’t found until quite recently because it is made up of very small free nerve endings?

Answer 4

itch

Question 5

At which level of the somatosensory system are conscious decisions made about low-grade touch stimuli?

Answer 5

perceptual level

Question 6

An overwhelming odor dies down after a while is an experience of…

Answer 6

adaption

Question 7

Convergence creates receptive fields that have […] spatial discrimination and therefore they are […] sensitive.

Answer 7

less; less

Question 8

The sensation involves a simple system with receptors that are neuron dendrites.

Answer 8

pain

Question 9

An intensely painful stimulus is distinguished from a mildly painful one by:

Answer 9

1. a higher frequency of AP initiated

2. an increased number of receptors

Question 10

Pain from one area of the body, such as in cardiac ischemia, can be felt in another area, such as the neck and left shoulder; this is called…

Answer 10

referred pain

Question 11

The perinerium:

Answer 11

binds groups of fibers into bundles

Question 12

Ganglia associated with efferent nerve fibers mostly contain cell bodies of:

Answer 12

autonomic motor neurons

Question 13

Differences in regeneration capability between CNS and PNS neurons can mainly be attributed to the fact that:

Answer 13

1. PNS neurons are associated with supporting cells that promote rapid cleanup and regrowth of new axons
2. CNS neurons are associated with oligodendrocytes that contain growth-inhibiting proteins

Question 14

Which cranial nerve is VIII?

Answer 14

vestibulocochlear

Question 15

Which cranial nerve is V?

Answer 15

trigeminal

Question 16

Which cranial nerve is II?

Answer 16

optic

Question 17

Which cranial nerve is the exception and travels to the thoracic and abdominal cavities?

Answer 17

vagus

Question 18

Head trauma during an automobile accident sometimes damages cranial n I. What sensory modality would that effect?

Answer 18

small (olfaction)

Question 19

Damage to which cranial nerve would cause a person to lose their sense of balance?

Answer 19

vestibulocochlear VIII

Question 20

Which cranial nerve actually originates in the spinal cord?

Answer 20

Accessory nerve (XI)

Question 21

Which of the following cranial nerves has both sensory and motor functions?

Answer 21

facial (VII)

Question 22

The dorsal roots along the spinal cord contain […] neurons, while the dorsal rami contain […] neurons.

Answer 22

sensory; mixed

Question 23

The Latin term cauda equina literally means…

Answer 23

horse’s tail

Question 24

Which spinal nerve innervates the diaphragm muscle and is primarily responsible for anatomical repiration?

Answer 24

phrenic nerve

Question 25

Predict the outcome of damage to one cord of the left brachial plexus.

Answer 25

only a portion of the left limb will suffer reduced function

Question 26

Which nerve plexus contains your sciatic nerve?

Answer 26

sacral

Question 27

A neurologist can determine the approximate location of a spinal injury simple by testing areas of the skin for numbness. These skin areas are referred to as […].

Answer 27

dermatomes