Anatomy Test

Question 1

Name of the cell that sends signals around our body

Answer 1

Neuron/Nerve Cell

Question 2

2 Divisions of Nervous SYSTEM

Answer 2

Brain + Spinal Cord

Question 3

How are the BBBBrain + Spinal Cord different?

Answer 3

Brain- 100 BBBBillion nerves

Spinal Cord- 100 Million nerves

Question 4

Job of DendRIte

Answer 4

Receive info

Question 5

Cell BOdy job

Answer 5

PrOcess info

Question 6

AxoN Hillock job

Answer 6

Sends Nerve Impluses

Question 7

Myelin job

Answer 7

Protects axon

Question 8

Nodes job

Jumpin is an action hint hint

Answer 8

Allow the action potential to go really fast

Question 9

Axon terminal job

Answer 9

Branch to meet other neurons & the location where chemical signals occur

Question 10

Signal at rest?

Answer 10

-70mV

Question 11

What changes cause a signal to be sent?

Use ions & mV

Answer 11

Na+ and K+ travel through axon which changes the mV which means that the signal is being sent

Question 12

What cells make myelin?

Answer 12

Neurons

Question 13

Purpose of myelin?

Answer 13

Insulate & speed up signals

Question 14

What cannot flow through myelin?

Answer 14

Ions

Question 15

What is it called when the signal “jumps”?

Answer 15

Nerve impulse

Question 16

Why do signals jump?

Answer 16

Speed up the signal

Question 17

What part of the axon does the signal jump to?

Answer 17

Node to node

Question 18

5 steps of axon terminal?

Answer 18

1) Signal reaches axon terminal
2) Cause vesicles containing neurotransmitters to fuse w cell membrane
3) neurotransmitters defuse into synapse
4) NT final their specific receipt on post synaptic cell
5) other neuron then changes NT back into electric one

Question 19

What is the function of the brain stem ?

Answer 19

Automatic survival functions

Breathing, heart beat, etc.

Question 20

3 part of brain stem

Answer 20

Medulla
Pons
Mid brain

Question 21

Limbo system function

Cough cough melin softly says

Answer 21

Controls eating, drinking, emotions, sex & hunger drives

Question 22

Structured & their functions in limbic system

Answer 22

Thalamus- receives + transmits sensory info to recipient
Hypothalamus- controls eating, drinking, & body temp
Amygdala- linked to emotion+fear

(Oh MYYY!!-fear)
(T-transmit)
(Hypo=Hippo=fat=eating, drinking)

Question 23

FronTal lobe function / location

Answer 23

Talk/Speech, judgment, movement

Top left

Question 24

Parietal function/location

Answer 24

Touch, sensory cortex

Top right

Question 25

Occipital function/location

Answer 25

``` Vision Right middle (eyes in back of head) ```

Question 26

Cerebellum function/location

Answer 26

Coordinates voluntary movement | Only one on the lines

Question 27

Pons function/location

Answer 27

Sleep,REM sleep | Bottom Preggo part of stem closer to eyes cuz lower & sleep

Question 28

Mid brain function/location

Answer 28

Motor movement audio/visual processing | Top preggo

Question 29

What structure connects the 2 brain hemispheres?

Answer 29

Corpus callosum

Question 30

What does it mean when brains are plastic/exhibit neuroplasticity

Answer 30

Ability of brain to reorganize & make new connections between neurons

Question 31

Order of neurons+function when hand touches hot stove

Answer 31

Sensory neurons receive stimulus of hot stove Nerve impulse sent to brain & interneurons decide u must move hand Motor neurons send signal to hand to quickly remove from stove

Question 32

Diagram

Answer 32

``` 🤯 | | \ | \_ |_~_| ``` Hand= sensory to brain through spinal cord Interneurons in brain back down Motor down to hand to move