brain, nerves, spinal cord functions

Question 1

cerebral aquaduct

Answer 1

connects 3rd and 4th ventricle part of midbrain

Question 2

optic tracts

Answer 2

relay info from optic chiasma to parts in brain

Question 3

infundibulum

Answer 3

passageway for hormones from pituitary gland

Question 4

olfactory bulbs

Answer 4

sensory input and output

Question 5

olfactory tracts

Answer 5

signal transmitted down the tracts and end in primary olfactory area of temporal lobe

Question 6

optic nerves

Answer 6

transfer visual info from retina to the vision centers of the brain via electrical impulses

Question 7

optic chiasma

Answer 7

connects brain to the eye

Question 8

pituitary gland

Answer 8

produce critical hormones

Question 9

thalamus

Answer 9

relay motor and sensory signals to cerebral cortex

Question 10

hypothalamus

Answer 10

link nervous system to endocrine system via pituitary gland

Question 11

mammillary bodies

Answer 11

relay stations in olfactory passageways

Question 12

brain stem

Answer 12

controls flow of message between brain and rest of the body

Question 13

pons

Answer 13

relay signals from forebrain to cerebellum (helps w breathing, sleeping, facial expressions)

Question 14

medulla oblongata

Answer 14

controls autonomic nervous system

Question 15

cerebellum

Answer 15

controls voluntary movements such as posture and balance

Question 16

2 hemispheres

Answer 16

left - controls right side of body, logic tasks (science)

right - left side of body, tasks of creativity

Question 17

cerebral cortex

Answer 17

where most info processing occurs, divided into 4 lobes

Question 18

vermis

Answer 18

muscle tone for posture and locomotion

Question 19

arbor vitae

Answer 19

brings sensory and motor info to and from the cerebellum

Question 20

lymbic system

Answer 20

deals w emotion and formation of memories

Question 21

cingulate gyrus

Answer 21

functions in emotion and behavior

Question 22

hippocampus

Answer 22

memory and spatial navigation

Question 23

frontal lobe

Answer 23

motor functions, planning, reasoning, judgement

Question 24

parietal lobe

Answer 24

sensory info - taste, temp, touch

Question 25

temporal lobe

Answer 25

processing auditory info from the ear

Question 26

occipital lobe

Answer 26

visual processing info center

Question 27

corpus callosum

Answer 27

connects the 2 hemisphere to help communicate and coordinate

Question 28

fornix

Answer 28

connects hippocampus to mammillary body and thalamus

Question 29

basal ganglia

Answer 29

helps w motor functions

Question 30

lateral ventricles

Answer 30

contains fluid that helps cushion the brain

Question 31

diencephalon

Answer 31

controls many autonomic functions, relays sensory info between the brain

Question 32

anterior median fissure

Answer 32

divides the spinal cord into symmetrical halves

Question 33

posterior median fissure

Answer 33

separates posterior funiculi and the external boundary of posterior median septum

Question 34

central canal

Answer 34

structure w/in spinal cord that holds the spinal cord and nerves

Question 35

ventral gray horns

Answer 35

contains motor neurons that deal w the muscle activity

Question 36

dorsal grey horns

Answer 36

sensory relay neurons that receive info from the periphery

Question 37

I: olfactory

Answer 37

afferent, smell

Question 38

II: optic

Answer 38

afferent, vision

Question 39

III: oculomotor

Answer 39

efferent, eyeball and eyelid movement

Question 40

IV: trochlear

Answer 40

efferent, move eyeball down and laterally

Question 41

V: trigeminal

Answer 41

mixed, chewing face/mouth

Question 42

VI: abducens

Answer 42

efferent, turns eyeball laterally

Question 43

VII: facial

Answer 43

mixed, facial expressions and taste receptors

Question 44

VIII: vestibulocochlear

Answer 44

afferent, hearing

Question 45

IX: glossopharyngeal

Answer 45

mixed, senses carotid blood pressure

Question 46

X: vagus

Answer 46

mixed, slows heart rate

Question 47

XI: spinal accessory

Answer 47

mixed (primary efferent), controls trapezius and sternocleidomastoid

Question 48

XII: hypoglossal

Answer 48

mixed (primary efferent), controls tongue movement