Nervous system

Question 1

structure of axons

Answer 1

dendrites, axo, axon hillock, synaptic terminals

Question 2

dendrites

Answer 2

communication to other cells

Question 3

axo

Answer 3

long dendrite, send signal toward the cell body or to a tissue or another cells

Question 4

axon hillock

Answer 4

regulator for stimulation

Question 5

synaptic terminals

Answer 5

axon end point of communication

Question 6

what is Myelin

Answer 6

fatty protein cell wrapped around axon created by the sohwann cell, provides insulation which creater faster movement of ions

Question 7

nodes of ranvier

Answer 7

space where action potential happens

Question 8

Saltatory propagation

Answer 8

jumping of action potential to one node to another (faster AP)

Question 9

Continuous propagation

Answer 9

action potential happening everywhere (slower AP)

Question 10

Synapse

Answer 10

neurotransmitters in the synaptic vessel, stimulate the neurotransmitters in the synaptic cleft, they bind to receptors and cause a change= requires energy provided by mitochondria

Question 11

Action potential

Answer 11

electrochemical signal from one end of axon to the other; depolarized AP at equilibrium, polarized= AP unequal

Question 12

White vs Gray Matter

Answer 12

axons with mylein and axons without mylein

Question 13

what is multiple sclerosis

Answer 13

autoimmune diease that attacks myelin in central nervous system, lose communication in brain is fatal

Question 14

Sensory Neuron

Answer 14

carry communication out from central system to the nervous system

Question 15

Intermeroun

Answer 15

central nervous sytem communication from one neuron to another

Question 16

Motor neuron

Answer 16

leaving the central nervous system and changing something out in body

Question 17

Meninges

Answer 17

connective tissue that surround the brain and spinal cord

Question 18

Dura

Answer 18

Periostal/meingeal dura mater

Question 19

Archnoid matter

Answer 19

middle one of the three membranes or meninges that surround the brain and spinal cord, situated between the dura mater and the pia mater.

Question 20

subarachnoid space

Answer 20

cerebral and spinal fluid

Question 21

Pia mater

Answer 21

thin slits directly on brain

Question 22

cerbral fluid flow

Answer 22

lateral ventrical–>intraventrical foramen–>4th ventrical
central canal to spinal cord OR submachiod space and leak out

Question 23

Arachnoid granulation

Answer 23

take cerebral fluid and put back in blood through sagittal sinus artery

Question 24

Hydrocephalus

Answer 24

cerebral spinal fluid cannot get out of ventricle, pushes onto the brains causing the expansion of the skill to put less pressure on brain

Question 25

Basal Ganglia

Answer 25

motor control, allow or block the motor signals

Question 26

corpus callosum

Answer 26

connection of left and right hemisphere point of communication

Question 27

cerebellum

Answer 27

attaches ti brainstem, responsible for coordination where information is synthesized, helps with balance without thunking about it

Question 28

Ataxia

Answer 28

injury of cerebellum, decrease coordination of movement

Question 29

Parkisons Disease

Answer 29

Basal ganglion loses regulation, either doesn’t allow any movement through or all movements through; treatment dopamine

Question 30

Dorsal root

Answer 30

afferent going to central nerves

Question 31

Ventral root

Answer 31

cell bodies inside/in between neuron

Question 32

Dermatomes

Answer 32

each part of the skin has sensory information at a specific root

Question 33

Myotomes

Answer 33

specfic muscles controlled by nerve root

Question 34

Epidural

Answer 34

anesthesia applied by entering the epidural space

Question 35

Gliobasltoma

Answer 35

tumor from gilia cells