nervous system

Question 1

PNS

Answer 1

nerves connecting brain and spinal cord to other parts of body

Question 2

two types of PNS nerves

Answer 2

cranial

spinal

Question 3

autonomic nervous system

Answer 3

motor neurons send impulses from spinal cord and brain to INVOLUNTARY tissue

Question 4

two types of autonomic nervous system

Answer 4

sympathetic

parasympathetic

Question 5

sympathetic nervous system

Answer 5

an emergency system (adrenaline)

Question 6

parasympathetic nervous system

Answer 6

controls under normal everyday conditions
opposite of sympathetic
maintain homeostasis

Question 7

three types of neurons

Answer 7

sensory
motor
interneuron

Question 8

sensory neuron

Answer 8

carry impulses to brain and spinal cord FROM all parts of body

Question 9

motor neuron

Answer 9

carry impulses in opposite direction

Question 10

interneuron

Answer 10

from sensory to motor neurons

Question 11

three types of neuroglia

Answer 11

astrocytes
microglia
oligodendrocytes

Question 12

astrocytes

Answer 12

attach to neurons and small blood vessels

Question 13

microglia

Answer 13

like white blood cells

clean up unwanted things

Question 14

oligodendrocytes

Answer 14

hold nerve fibers together; produce myelin

Question 15

two types of reflexes

Answer 15

sensory to motor neurons (knee jerk)

sensory to interneuron to moror neuron (withdrawal)

Question 16

how is an impulse transmitted

Answer 16

electrical disturbance
sodium ions racing inward
positive inside, negative outside
myelin makes it go faster

Question 17

synapse

Answer 17

gap between neurons

Question 18

neurotransmitters

Answer 18

chemicals that move from neuron to neuron

Question 19

central nervous system

Answer 19

brain and spinal cord

protected by skull, vertebrae, meninges

Question 20

brainstem function

Answer 20

controls automatic body functions

Question 21

diencephalon function

Answer 21

between midbrain and cerebrum

Question 22

two parts of diencephalon

Answer 22

hypothalamus

thalamus

Question 23

hypothalamus

Answer 23

internal organ control

horomone

Question 24

thalamus

Answer 24

sensation

Question 25

cerebellum function

Answer 25

normal movements, balance, and posture

Question 26

cerebrum function

Answer 26

largest part

Question 27

gyri

Answer 27

ridges

Question 28

sulci

Answer 28

grooves

Question 29

meninges

Answer 29

tough membranes that surround brain and spinal cord

Question 30

3 parts of meninges

Answer 30

dura (outside)
pia (inner)
arachnoid (middle)

Question 31

cerebrospinal fluid

Answer 31

fills space in brain and spinal cord

circulates from blood

Question 32

function of the nervous system

Answer 32

communication and control

Question 33

reflex vs reaction

Answer 33

reflex is controlled by spinal cord

reaction is controlled by the brain

Question 34

what does the spinal cord connect

Answer 34

brain and PNS

Question 35

spinal cord functions

Answer 35

2 way conduction path

reflex center

Question 36

gray matter vs white matter brain

Answer 36

surface gray

inside white

Question 37

gray matter vs white matter spinal cord

Answer 37

outside white

inside gray

Question 38

gray matter

Answer 38

cell bodies and dendrites

Question 39

white matter

Answer 39

axons with myelin

Question 40

what is a nerve

Answer 40

several neurons

Question 41

function of meninges

Answer 41

keep blood out and cerebrospinal fluid in