nervous system

Question 1

central nervous system

Answer 1

CNS

brain and spinal cord

Question 2

Peripheral nervous system

Answer 2

PNS

composed of all nervous tissue outside CNS, including nerves and ganglia

Question 3

2 types of cells

Answer 3

neuroglial

neurons

Question 4

neuroglial

Answer 4

support cells

Question 5

neurons

Answer 5

electrical impulses
for every neuron, you have about 9 neuroglial cells
sensory neuron, interneuron, motor neuron

Question 6

sensory neuron

Answer 6

receptors that signal heat, pain, etc

neurons that carry incoming information from the sensory receptors to the brain and spinal cord

Question 7

interneuron

Answer 7

process info

Question 8

motor neuron

Answer 8

connected to an effector that tell you what to do (glands, organs, muscles)
transmit action potentials from CNS to the periphery

Question 9

myelin sheath

Answer 9

lipid cover that surrounds an axon

insulates

Question 10

nodes of ravier

Answer 10

gaps in the myelin sheath

Question 11

nerve impulse

Answer 11

message that a neuron carries

Question 12

action potential

Answer 12

a neural impulse; a brief electrical charge that travels down an axon (travels in a wave, only moves in one direction) all-or-nothing, has to reach -65mV on a resting nerve

Question 13

refractory period

Answer 13

time it takes to reset before a neuron can fire another impulse

Question 14

saltatory conduction

Answer 14

jumps

350 mph

Question 15

transmission

Answer 15

calcium goes in, neurotransmitter comes out

Question 16

integration

Answer 16

dendrites connecting to soma’s of other neurons

Question 17

ventricles

Answer 17

sinuses in the brain

stores excess cerbra spinal fluid

Question 18

hydrocephaly

Answer 18

water on the brain

makes babies head bigger

Question 19

gray matter

Answer 19

unmyleinated nervous tissue

Question 20

white matter

Answer 20

myleinated nervous tissue

Question 21

spinal cord

Answer 21

connects brain to peripheral nerves

many different tracts

Question 22

parts of the brain

Answer 22

cerebrum
diencephalon
cerebellum
brain stem

Question 23

cerebrum

Answer 23

largets portion
higher though process occur (learning, speech, memory)
longitudinal fissure (sepertaes left and right)
sulk; groove sin brain
carpus collosum
association areas decide if you have done something before

Question 24

carpus collosum

Answer 24

joins left and right hemisphere (deep in the brain)

Question 25

diencephalon

Answer 25

thalamus; receive all sensory input but smell | hypothalamus; below the thalamus, run homeostasis

Question 26

cerebellum

Answer 26

coordination | receives sensory and motor input a coordinates them

Question 27

brain stem

Answer 27

connects the spinal cord to the remainder of the brain midbrain; reflex enters and colliculi pons; connects M.O; medulla oblongata (regulate bp, heart rate, breathing) reticular formation; alertness and filter out background

Question 28

limbic system

Answer 28

primitive emotion with higher mental functions hippocampus; gradually eroding leads to Alzheimer's (sensory and memories) amygdala; associates emotions with everything and triggers memories

Question 29

higher mental fucntions

Answer 29

``` memory learning long term short term semantic episodic skill ```

Question 30

language and speech

Answer 30

left side wernickes area brocas area visual cortex

Question 31

wernickes area

Answer 31

comprehend

Question 32

broca's area

Answer 32

response

Question 33

visual cortex

Answer 33

seeing

Question 34

left/right

Answer 34

left: verbal, lingual, logical, analytical, rational right: intuition, craetivity, visual spacial

Question 35

somatic system

Answer 35

serves skin, muscles, tendons | deals with reflexes

Question 36

autonomic system

Answer 36

regulate cardiac and smooth muscle and galnds sympathetic parasympathetic

Question 37

sympathetic

Answer 37

centered in middle of spinal cord | fight or flight

Question 38

parasympathetic

Answer 38

aobove and below centers | relaxing

Question 39

short term memory

Answer 39

hold things in 7 blocks | temporary

Question 40

semantic

Answer 40

numbers and words

Question 41

episodic

Answer 41

people and events

Question 42

skill

Answer 42

some sort of motor function

Question 43

ganglion

Answer 43

cluster of nerve cell bodies | 31 pairs of spinal nerves

Question 44

Alzheimers

Answer 44

CNS | plaque build up in the brain

Question 45

parkinsons

Answer 45

nerves are extra stimulated

Question 46

cocaine

Answer 46

hyperactive | body makes less dopamine

Question 47

drug abuse

Answer 47

effects limbic system | promotes or retards neurotransmitters

Question 48

alcohol

Answer 48

depressant | digested in stomach

Question 49

nicotine

Answer 49

cns releases dopamine stimulates nervous system increase heart rate and bp

Question 50

soma

Answer 50

cell body

Question 51

dendrite

Answer 51

info goes in

Question 52

threshold

Answer 52

As soon as you hit it the neuron fires (-40 mV)