Neurons

Front 1

neuron

Back 1

these cells are called the "nerve cells" of the human body.

Front 2

subthreshold

Back 2

a stimulation too low to fire a response.

Front 3

all or non law

Back 3

fires with max intensity, or doesn't fire at all.

Front 4

resting membrane potential

Back 4

neuron is at rest

Front 5

potassium

Back 5

electrical charge outside

Front 6

sodium

Back 6

inside neuron's membrane.

Front 7

synapses

Back 7

gap between two nerve endings.

Front 8

dentrite

Back 8

carries impulse toward neuron cell.

Front 9

neurolemma

Back 9

fatty sheath around neurons.

Front 10

neurogial

Back 10

helper cells

Front 11

body of a neuron

Back 11

soma

Front 12

astrocytes supply the neurons with..

Back 12

blood.

Front 13

allows impulse to skip along the axon.

Back 13

nodes of ranvier

Front 14

what stage of impulse when all sodium is found outside, potassium inside.

Back 14

resting potential.

Front 15

correct sequence of nerve impulse.

Back 15

afferent-interneuron-efferent

Front 16

electrically charged particals

Back 16

ions.

Front 17

non conduction neuron

Back 17

negatively charged with k present inside.

Front 18

any nerve creates what overall event?

Back 18

action potential.

Front 19

neurotransmitter

Back 19

acetylcholine.

Front 20

ipsilateral reflexes affect

Back 20

one side of body.

Front 21

NA+ represents

Back 21

positive sodium

Front 22

K- represents

Back 22

negative potassium

Front 23

What stage does the impulse first enter a neuron.

Back 23

depolarization

Front 24

skeletal muscle

Back 24

acetychlorinel

Front 25

reflex portion

Back 25

spinal cord.

Front 26

smooth muscle

Back 26

epinephrine

Front 27

sends impulse to muscle

Back 27

effector motor.

Front 28

period of time

Back 28

1/5000 sec

Front 29

abnormal reflex

Back 29

babinski

Front 30

branch of axon

Back 30

collateral

Front 31

reflex affecting both sides of body.

Back 31

contralateral

Front 32

synapse turns on the impulse

Back 32

excitatory

Front 33

occurs on bottom of foot

Back 33

plantar

Front 34

many dendrites

Back 34

multi-polar

Front 35

membrane "soaks up"

Back 35

post-synaptic membrane.

Front 36

muscle be considered

Back 36

effector

Front 37

skin be considered

Back 37

receptor

Front 38

slows down heart rate

Back 38

norepinephrine

Front 39

stage after repolarization

Back 39

hyperpolarization

Front 40

membrane neurotransmitter passes out of.

Back 40

pre-synaptic membrane

Front 41

first structure to pick up an impulse

Back 41

tactile receptor.

Front 42

all the reflex lab questions.

Back 42

ipsilateral

Front 43

describe single neuron cell

Back 43

start/ Pentagon

Front 44

charge of axon when resting.

Back 44

neutral

Front 45

overall charge when in depolarization

Back 45

negative

Front 46

charge when in repolarizathion

Back 46

negative.

Front 47

stage when impulse enters

Back 47

depolarization

Front 48

stage when almost returns normal

Back 48

absolute tetraction period.

Front 49

longest pathway in lab

Back 49

toes

Front 50

shortest pathway in lab

Back 50

eyes

Front 51

stage one

Back 51

resting membrane potential

Front 52

stage two

Back 52

depolarization: impulse is present

Front 53

stage three

Back 53

repolarization: impulse is passing through axon

Front 54

stage four

Back 54

hyperpolarization: impulse leaving

Front 55

stage five

Back 55

absolute refraction period: balance potassium inside to go back to resting.