Homework

Question 1

Which structures are described as the shortest association fibers?

Answer 1

arcuate fibers

Question 2

Activity in the basal nuclei is regulated by which component of the midbrain?

Answer 2

substantia nigra

Question 3

Which gray matter component of the medulla oblongata integrates and relays visceral sensory information to autonomic processing centers

Answer 3

solitary nucleus

Question 4

Which structure is located in the diencephalon?

Answer 4

third ventricle

Question 5

Superior cerebellar peduncles:

Answer 5

link the cerebellum with the midbrain, diencephalon, and cerebrum.

Question 6

Which diencephalic structure regulates body temperature by coordinated adjustments in blood flow and sweat gland activity?

Answer 6

preoptic area of the hypothalamus

Question 7

Which of the following is a secondary brain vesicle that will become the medulla oblongata of the adult brain?

Answer 7

myelencephalon

Question 8

What is the function of the corticobulbar tracts?

Answer 8

They provide conscious control over skeletal muscles that move the eye, jaw, and face, and some muscles of the neck and pharynx.

Question 9

Which general sensory receptors are fast-adapting receptors and most sensitive to pulsing or high-frequency vibrating stimuli?

Answer 9

lamellated corpuscles

Question 10

Which major somatic sensory pathway carries proprioceptive input from Golgi tendon organs, muscle spindles, and joint capsules?

Answer 10

spinocerebellar pathway

Question 11

Which structure coordinates complex motor patterns through feedback loops?

Answer 11

cerebellum

Question 12

Which of the following is a characteristic of phasic receptors?

Answer 12

They are normally inactive, but become active for a short time in response to a change in the conditions they are monitoring.

Question 13

Provides motor control over distal muscles of the upper limbs

Answer 13

rubrospinal tract

Question 14

Which major somatic sensory pathway carries pain and temperature sensations?

Answer 14

lateral spinothalamic tract of the spinothalamic pathway

Question 15

Gustatory information reaches the brain by way of cranial nerve

Answer 15

IX

Question 16

Difficulty in swallowing may be a sign of damage to which cranial nerve(s)?

Answer 16

vagus and glossopharyngeal

Question 17

The Roman numeral V indicates the ________ nerve.

Answer 17

trigeminal

Question 18

Which of the cranial nerves originate in the nasal cavity?

Answer 18

olfactory nerve

Question 19

Olfactory receptors send axons through the cribriform plate and synapse on neurons in the

Answer 19

olfactory bulbs

Question 20

Which of the cranial nerves is named for the fact that it “wanders,” that is, innervates structures throughout the thorax and abdomen?

Answer 20

vagus nerve (X)

Question 21

Which of the following symptoms would you associate with damage to the spinal accessory nerve?

Answer 21

weakness of the sternocleidomastoid muscle

Question 22

The cranial nerve that has three major branches is the

Answer 22

trigeminal

Question 23

The Roman numeral VIII indicates the ________ nerve.

Answer 23

vestibulocochlear

Question 24

The dorsal ramus:

Answer 24

innervates the muscles, joints, and skin of the back

Question 25

Which is the innermost connective tissue layer of the spinal nerve that surrounds each axon?

Answer 25

endoneurium

Question 26

Which is correct regarding the spinal cord?

Answer 26

The adult spinal cord ends between vertebrae L1 and L2

Question 27

Motor commands are conveyed to the spinal cord by which of the following?

Answer 27

descending tracts

Question 28

The dorsal and ventral roots of spinal segments L2 to S5 and the filum terminale together form a complex called the:

Answer 28

cauda equina

Question 29

Which is the middle meningeal layer that includes a simple squamous epithelium and a network of collagen and elastic fibers, creating a space between it and the inner meningeal layer?

Answer 29

arachnoid mater

Question 30

Define gray matter in the spinal cord.

Answer 30

It is neural tissue that is dominated by the cell bodies of neurons, neuroglia, and unmyelinated axons, and it surrounds the narrow central canal

Question 31

Which structure lies between the pedicles of the adjacent vertebrae?

Answer 31

dorsal root ganglion

Question 32

The posterolateral and anterolateral regions of the antebrachium are monitored by which dermatome(s)?

Answer 32

C6

Question 33

What is the function of denticulate ligaments?

Answer 33

They prevent lateral movement of the spinal cord

Question 34

Which innervated region of the ascending tracts that provide sensations in the posterior white column is located most medial in the spinal cord?

Answer 34

leg

Question 35

Which spinal cord structure contains somatic motor nuclei?

Answer 35

anterior gray horn