Neurons

Question 1

HOMEOSTATSIS

Answer 1

maintaining a steady state

Question 2

nervous and endocrine system in homeostasis

Answer 2

nervous: fast, short duration
endocrine: slow, long duration

Question 3

types of neurons

Answer 3

sensory
motor
interneuron

Question 4

type of matter that sensory neuron has and why

Answer 4

white matter, to react to protect and senses the env.

Question 5

type of matter that interneuron has and where its found

Answer 5

grey matter, found in spinal cord and cortec of the brain

Question 6

type of matter than motor neuron has and where its found

Answer 6

white matter
found in peripgeral nervous system
small of the brain (cerebillian)

Question 7

CENTRAL NERVOUS SYSTEM

Answer 7

integrates and processes info; body’s coordinating centre for mechanical and chemical actions
- brain and spinal cord

Question 8

PERIPHERAL NERVOUS SYSTEM

Answer 8

carries messages to and from the CNS

Question 9

2 systems of PNS

Answer 9

somatic
autonomic

Question 10

SOMATIC

Answer 10

voluntary contraction

Question 11

AUTONOMIC

Answer 11

involuntary contraction

Question 12

parts of autonomic system

Answer 12

sympathetic
parasympathetic

Question 13

SYMPATHETIC SYSTEM (autonomic)

Answer 13

fight or flight stress response

Question 14

what does sympathetic system release

Answer 14

norepinephrine (NT)
excitatory effect on more muscles

Question 15

PARASYMPATHETIC SYSTEM (autonomic)

Answer 15

restores and conserves energy by reversing the effect of stress response

Question 16

when is parasympathic system active and what does it release

Answer 16

active when body is at rest
releases acetylcholine (NT)

Question 17

GREY MATTER

Answer 17

slow transmissions, doesn’t regenerate

Question 18

WHITE MATTER

Answer 18

fast transmissions, regenerates

Question 19

function of SPINAL CORD

Answer 19

collects messages, sends to brain, sends brain messages to effectors

Question 20

DORSOL

Answer 20

brings sensory info. into the spinal cord

Question 21

VENTRAL

Answer 21

carries moto info. from spinal to PNS

Question 22

DENDRITE

Answer 22

NT receptor
- isn’t stimulated with the incorrect shape

Question 23

CELL BODY

Answer 23

actual body

Question 24

AXON

Answer 24

transmits information from the cell body to another neuron/effector

Question 25

SHWANN CELLS

Answer 25

(gilal cells) insulation to the axon

Question 26

NEURILEMA

Answer 26

membrane found over the shwann cells

Question 27

NDOES OF RANVIER

Answer 27

spaces of the acon that are exposed to ECF

Question 28

MYLEIN SHEATH

Answer 28

general term includes shwann cells/nodes of ranvier

Question 29

AXON TERMINAL/ END PLATES

Answer 29

release one type of NT

Question 30

CHOLINERGIC SYNAPSE

Answer 30

space between neurons where NT move through

Question 31

NEUROMUSCULAR JUNCTION

Answer 31

space between a motor neuron and an effector

Question 32

EFFECTOR

Answer 32

any muscle or gland

Question 33

what matter does neurilema contain

Answer 33

white matter to allow for regeneration

Question 34

NEUROTRANSMITTER

Answer 34

3D chemicals that are produced from the end plates

Question 35

two types of NT

Answer 35

excitatory and inhibitory

Question 36

EXCITATORY

Answer 36

causes hyperpolarization in the post synaptic neuron

Question 37

INHIBITORY

Answer 37

causes hypopolarization

Question 38

ways to get rid of NT from post synaptic neurons

Answer 38

enzymes transporter protein synapse

Question 39

reflex arc steps

Answer 39

sensory repair sensory nerve interneuron (spinal cord) motor neuron effector

Question 40

steps of nerve transmission

Answer 40

polarized depolarizied repolarized refracotory period

Question 41

THRESHOLD POTENTIAL

Answer 41

minimum stimulus required to have an action potential

Question 42

ALL OR NONE RESPONSE

Answer 42

due to a fixed number of NA/K gates there's a max number of ions that can be exchanged

Question 43

3 reason for intensity

Answer 43

- inc. number of sensory receptors - inc. number of sensory neurons - inc. number of waves of depolarization

Question 44

2 ways of summation

Answer 44

- spatial - temporal