Nervous System

Question 1

application of NS

Answer 1

sensations
movement
proprioception
posture
balance
involuntary living activities

Question 2

parts of a neuron

Answer 2

dendrite, cell body, axon, nerve endings

Question 3

anotomical divisions of NS

Answer 3

peripheral and central

Question 4

functional divisions of NS

Answer 4

autonomic and somatic

Question 5

sympathetic is what

Answer 5

fight/flight

Question 6

parasympathetic is what

Answer 6

calmin rest and digest

Question 7

afferent neurons

Answer 7

sensory. to central

Question 8

Efferent neurons

Answer 8

motor. to peripheral

Question 9

at rest what is na and k concentrations of cell

Answer 9

na outiside and k inside

Question 10

what part of a cell is excitable

Answer 10

the cell membrane

Question 11

what changes in response to stimul

Answer 11

electrical potentail

Question 12

each neuron recives stimuli from what

Answer 12

many neurons at dendrite

Question 13

excitatory def

Answer 13

increase in the electrical potential of cell membrane
brin neuron closer to threshold

Question 14

inhibitory def

Answer 14

decrease in the electrial potential of cell membrane and brings neuron farther fro threshold

Question 15

3 types of receptors

Answer 15

mechano
thermo
chemo

Question 16

what happens if a neuron maintains membrane potential below the threshold level

Answer 16

neuron does NOT generate an AP

Question 17

what happens if the increase in mebrane potential is above a threshold level

Answer 17

the neuron depolarizes and an AP is generated

Question 18

what happens after an AP is generated

Answer 18

it propagates down the azon to terminal endings to stiulate (other dendrites is a sensory neuron and muscle fibers if a motor neuron

Question 19

kinestetic responds to what

Answer 19

respond to acceleration

Question 20

vestibular receptors respond to what

Answer 20

change in body position and change fluid in ears.

Question 21

what is an interneuron between

Answer 21

an afferent and efferent neuron

Question 22

what are the 5 reflexes

Answer 22

spinal reflex
myotatic (stretch) reflex
flexion reflex
reciprocal inhibition
crossed extensor reflex

Question 23

of nueonrs involved in spinal reflex.
myotatic (stretch) reflex,
flexion reflex

Answer 23

spinal reflex is min of 2
myotatic (stretch) reflex is 2
flexion reflex is 3

Question 24

where is a muscle spindle found

Answer 24

on the belly of muscle

Question 25

what does a muscle spindle respond to

Answer 25

change in length

Question 26

where is a golgi tendon located

Answer 26

on the tendon

Question 27

what does a goldi tendon organ respond to

Answer 27

tension

Question 28

steps of golgi tendon relex steps

Answer 28

1. golgi tendon senses excessive tension 2. sensory neuron conducts AP 3. sensory neurons synapse with interneurons 4. alpha motor neuron to quadricept is inhibited while the alpha motor neuron to the hamstring is stimulated 5. the hamstring contracts and the quadricept relax

Question 29

what do free nerve endings located distally on a limb communicate with

Answer 29

motor neurons to the limb flexor muscles

Question 30

what is the withdrawal effect and examples

Answer 30

free nerve endigns are sitmulated by contact with so say a hot surface or foot on sharp object

Question 31

purpose of withdrawal effect

Answer 31

to protect from injury

Question 32

what does the crossed extensor relex combine

Answer 32

the flexor withdrawla dn extensor thrust reflexes

Question 33

what is the crossed extensor reflex initiated by

Answer 33

pain in supporting limb.

Question 34

crossed extensor reflex broken down

Answer 34

flexor withdrawl reflex on supporting leg. extensor thrust reflex on opp leg. support shifted from irritated limb to opposite limb