Exam 7

Question 1

Dorsal Columns

Answer 1

discriminated somatosensory (mapped to skin senses)

Question 2

Posterior Spinocerebellar

Answer 2

proprioception (spine to brain)

Question 3

Anterior Spinocerebellar

Answer 3

proprioception (spine to brain)

Question 4

Lateral Spinothalamic

Answer 4

sensory information going to cortex; visceral sensory (spine to thalamus)

Question 5

Anterior Spinothalamic

Answer 5

sensory information going to cortex; visceral sensory (spine to thalamus)

Question 6

Lateral reticulospinal

Answer 6

inhibits the extensor and stimulates the flexor muscles of the trunk and proximal limbs

Question 7

Lateral corticospinal

Answer 7

control the voluntary movement of contralateral limbs

Question 8

Rubrospinal

Answer 8

muscle tension/tone of muscles in limbs

Question 9

Medial reticulospinal

Answer 9

muscle tension/unskilled movement

Question 10

Anterior Corticospinal

Answer 10

gross and postural movement of the trunk and proximal musculature

Question 11

Vestibulospinal

Answer 11

maintain balance during standing a moving

Question 12

Tectospinal

Answer 12

help react to loud noises/head movement (relation to colliculi)

Question 13

Ascending Tracts Color

Answer 13

Blue

Question 14

Descending Tracts Color

Answer 14

Red

Question 15

Cranial Nerve I

Answer 15

Olfactory

Question 16

Olfactory Sensory, Motor, Both?

Answer 16

Sensory; carrying information concerning olfaction

Question 17

Cranial Nerve II

Answer 17

Optic

Question 18

Optic Sensory, Motor, Both?

Answer 18

Sensory; carrying information concerning vision

Question 19

Cranial Nerve III

Answer 19

Occulomotor

Question 20

Occulomotor Sensory, Motor, Both?

Answer 20

Motor; carrying information concerning vision,PNS/visceral motor fibers to iris and ciliary muscles; some proprioceoption/sensory feedback from eye muscles

Question 21

Cranial Nerve IV

Answer 21

Trochlear

Question 22

Trochlear Sensory, Motor, Both?

Answer 22

Both;
Ophthalmic (V1): Sensory
Maxillary (V2): Sensory
Mandibular (V3): Sensory, Motor

Question 23

Cranial Nerve V

Answer 23

Abducens

Question 24

Abducens Sensory, Motor, Both?

Answer 24

Motor; somatic motor fibers to last remaining extrinsic eye muscle plus proprioception/sensory

Question 25

Cranial Nerve VI

Answer 25

Facial

Question 26

Facial Sensory, Motor, Both?

Answer 26

Both; innervation to muscles responsible for facial expressions plus proprioception sensory feedback from those muscles, Provides PNS/visceral motorfibers to various glands including lacrimal, (tear), nasal, palatine, (tonsils?), submandibular, (salivary), and sublingual, (salivary)., Sensory, (afferent), information from the taste buds on the anterior ⅔ of the tongue.

Question 27

Cranial Nerve VIII

Answer 27

Vestibulocochlear

Question 28

Vestibulocochlear Sensory, Motor, Both?

Answer 28

Sensory; carrying information concerning equilibrium and movement, (vestibular: proprioception), and hearing

Question 29

Cranial Nerve IX

Answer 29

Glossopharyngeal

Question 30

Glossopharyngeal Sensory, Motor, Both?

Answer 30

Both; innervating part of tongue and pharynx; somatic motor to and proprioception from a pharyngeal muscle involved in swallowing. PNS efferents, ), information concerning taste and general stimuli such as touch, pressure, etc. from pharyngeal mucosa and posterior tongue; information from chemoreceptors in the carotid body, (O2 and CO2/pH), and pressure receptors in the carotid sinus

Question 31

Cranial Nerve X

Answer 31

Vagus

Question 32

Vagus Sensory, Motor, Both?

Answer 32

Both; somatic motor innervation of muscles in pharynx and larynx (swallowing and speech respectively) and feedback proprioception. major PNS visceral motor (efferent) outflow to heart, lungs, GI tract and corresponding visceral sensory information allowing feedback regulation; in particular blood pressure monitoring via receptors in the carotid sinus and respiration control via chemoreceptors in the aortic and carotid bodies. taste buds of posterior tongue and mucosa of larynx/pharynx

Question 33

Cranial Nerve XI

Answer 33

Accessory

Question 34

Accessory Sensory, Motor, Both?

Answer 34

Motor. Function; unique as fusion of CN and first 5 cervical SC nerves, (C1-C5). Purely motor, (efferent), as joins with vagus, (X), to innervate muscles in the larynx, pharynx and soft palate; spinal nerves control muscles that move head and neck

Question 35

Cranial Nerve XII

Answer 35

Hypoglossal

Question 36

Hypoglossal Sensory, Motor, Both?

Answer 36

Motor. the muscles of the tongue; not only for mastication and manipulation of food but also swallowing and speech.