Neuro 7

Question 1

gray matter

Answer 1

consists of unmyelinated somas, dendrites and axons

Question 2

white matter

Answer 2

mainly myelinated axons

Question 3

meninges

Answer 3

cerebral spinal fluid

Question 4

spinal cord

Answer 4

major pathway for info flow between brain and skin, joints and muscles

Question 5

spinal cord divided into what four regions

Answer 5

cervical, thoracic, lumbar, sacral

Question 6

Each segment of the four spinal cord regions give rise to bilateral pair of nerves which then split into what two roots?

Answer 6

ventral and dorsal

Question 7

ventral root

Answer 7

carries efferent info to muscle and glands

Question 8

dorsal root

Answer 8

carries afferent info to CNS

Question 9

gram matter consists of…

Answer 9

sensory and motor nuclei

Question 10

nuclei

Answer 10

clusters of cell bodies in CNS

Question 11

ganglia

Answer 11

clusters of cell bodies in PNS

Question 12

tracts

Answer 12

bundles of neurons in CNS

Question 13

where are tracts found

Answer 13

white matter in spinal cord

Question 14

ascending tracts

Answer 14

carry sensory info to brain

Question 15

descending tracts

Answer 15

carry commands to motor neurons

Question 16

spinal reflex

Answer 16

initiates a response without input from brain

Question 17

6 major divisions on the brain

Answer 17

cerebrum, cerebellum, diencephalon, medulla, midbrain, pons

Question 18

oldest and most primitive region of the brain

Answer 18

brainstem

Question 19

Brain contains _______

Answer 19

11 of 12 cranial nerves

Question 20

brainstem involved in…

Answer 20

arousal and sleep, muscle tone and stretch reflexes, breathing, blood pressure regulation and modulation of pain

Question 21

nuclei in medulla controls…

Answer 21

many involuntary functioning including cardio, respiratory, and vomiting center, deglutition, coughing, sneezing, hiccuping

Question 22

pons

Answer 22

contain nuclear and tracts and relays info between cerebellum and cerebrum; assists in breathing

Question 23

midbrain

Answer 23

junction between lower brain stem and diencephalon; primary function is eye movement and relays auditory and visual reflexes and body’s response to them (BOO!)

Question 24

reticular formation

Answer 24

small clusters of neuronal cells bodies interspersed among tracts

Question 25

reticular formation function

Answer 25

important in consciousness, arousal, attention, alertness, regulates muscle tone and assists in vital functions

Question 26

reticular activating system

Answer 26

RAS; projections to cerebral cortex

Question 27

cerebellum is the...

Answer 27

second largest brain structure

Question 28

cerebellum is in...

Answer 28

two cerebellar hemispheres

Question 29

cerebellum function

Answer 29

processes sensory info and coordinates execution of movement; regulates posture and movement

Question 30

diencephalon lies between

Answer 30

brain stem and cerebrum

Question 31

two primary structures of the diencephalon

Answer 31

thalamus and hypothalamus

Question 32

two endocrine structures of the diencephalon

Answer 32

pineal and pituitary gland

Question 33

thalamus

Answer 33

receives sensory info from cerebellum and projects to cerebrum for processing

Question 34

pineal gland

Answer 34

cyclically releases melatonin

Question 35

hypothalamus

Answer 35

center for homeostasis

Question 36

output of hypothalamus is through...

Answer 36

pituitary

Question 37

posterior pituitary

Answer 37

neural tissue

Question 38

anterior pituitary

Answer 38

endocrine tissue