Chapter 9

Question 1

I olfactory nerve

Answer 1

sensory nerve

receives sensory information about smell

Question 2

II optic nerve

Answer 2

sensory nerve

receives sensory information about vision

Question 3

III oculomotor nerve

Answer 3

motor nerve

eye movement

Question 4

IV trochlear nerve

Answer 4

motor nerve

eye movement

Question 5

V trigeminal nerve

Answer 5

sensory nerve

receives sensory information about facial sensation

motor nerve

chewing

Question 6

VI abducens nerve

Answer 6

motor nerve

eye movement

Question 7

VII facial nerve

Answer 7

sensory nerve

receives sensory information about taste

motor nerve

facial movement and saliva/tears production

Question 8

VIII vestibulocochlear nerve

Answer 8

sensory nerve

receives sensory information about hearing and balance

Question 9

IX glossopharyngeal nerve

Answer 9

sensory nerve

receives sensory information about taste

motor nerve

swallowing and releases saliva

Question 10

X vagus nerve

Answer 10

sensory nerve

receives sensory information about taste as well as ear, chest, and abdomen sensation

motor nerve

carries motor commands to heart rate, bronchi, and peristalsis

Question 11

XI accessory nerve

Answer 11

motor nerve

carries motor commands to the muscles involved in swallowing and the vocal cords and neck movement

Question 12

XII hypoglossal nerve

Answer 12

motor nerve

carries motor commands to move the tongue

Question 13

Astrocytes

Answer 13

cells with branches that radiate outward like a star

astr/o- star like structure
-cyte cell

Question 14

Ependymal cells

Answer 14

cells that line the ventricles of the brain and narrow, central canal within the spinal cord; they produce cerebrospinal fluid

Question 15

Microglia

Answer 15

cells that move throughout the tissues of the brain and spinal cord

they engulf and destroy dead cells and pathogens

Question 16

Oligodendroglia

Answer 16

cells that provide structural support

Question 17

Schwann cells

Answer 17

cells that produce myelin that is around the larger axons of neurons in the cranial nerves and spinal nerves

Question 18

Acetylcholine

Answer 18

neurotransmitter between neurons of the parasympathetic division

Question 19

Dopamine

Answer 19

neurotransmitter in the brain between neurons in the cerebral cortex, hypothalamus, midbrain, and limbic system

produced by the substantia nigra of the midbrain

Question 20

Endorphins

Answer 20

neuromodulators in the brain between neurons in the hypothalamus, and brainstem

one of several pain relievers

Question 21

Epinephrine

Answer 21

hormone secreted by the adrenal gland and released into the blood

stimulates neurons in the sympathetic division during times of anxiety, fear, or anger to prepare the body for “fight or flight”

Question 22

Norepinephrine

Answer 22

neurotransmitter of the sympathetic division

also found between neurons in the cerebral cortex, hypothalamus, cerebellum, brainstem, and spinal cord

Question 23

Serotonin

Answer 23

neurotransmitter between neurons of the limbic system, hypothalamus, and cerebellum in the brain and in the spinal cord

Question 24

Autonomic nervous system

Answer 24

division of the peripheral nervous system that controls the contractions of involuntary muscles

Question 25

Central nervous system (CNS)

Answer 25

division of the nervous system that consists of the brain and the spinal cord

Question 26

Nerve

Answer 26

bundle of individual neurons

Question 27

Nervous system

Answer 27

body system that consists of the brain, spinal cord, cranial nerves, and spinal nerves

includes the central nervous system as well as the peripheral nervous system and its further divisions

Question 28

Neural tissue

Answer 28

specialized tissue of the nervous system that can conduct electrical impulses

Question 29

Neuroglia

Answer 29

type of neural tissue whose cells perform specialized tasks that assist neurons in doing their work

types: astrocytes, ependymal cells, microglia, oligodendroglia, and Schwann cells

Question 30

Neuron

Answer 30

an individual nerve cell, which is the functional unit of the nervous system