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Flashcards in Nervey Stuff Deck (31):
0

Three main functions of nervous system

1. Receive info external or internal environment
2. Respond to stimuli
3. Maintain homeostasis.

1

Difference between axon and dendrite

Axon carries impulse AWAY from cell body.
Dendrite carries TOWARDS cell body

2

Three kinds of neurons

1. Sensory
2. Interneuron
3. Motor

3

What do sensory neurons do

Pick up stimuli from internal or external environment and send to CNS

4

What do interneurons do

Connect nerves

5

What do motor neurons do

Send an impulse to a muscles

6

What is an impulse

Message neuron carries

7

How does a message travel across a synapse

By way of chemical release/ neurotransmitter

8

A ________is what your body does in reaction to a stimulus

Response

9

A bundle of nerve fiber is

A nerve

10

Any change or signal in the environment that can make an organism react is

A stimulus

11

A cell that carries info through nervous system is called

Neuron

12

Where is the nucleus located in neuron

The middle/ in cell body

13

Synapse?

Beginning of next dendrite etc. it's that tiny space between

14

Two parts of nervous system

Central nervous system (CNS)
Peripheral nervous system (PNS)

15

Two parts of CNS

Brain
Spinal cord

16

Three parts of brain

Cerebrum
Cerebellum
Brain stem

17

Two parts of PNS

Automatic nervous system
Somatic nervous system

18

Function of automatic nervous system

Involuntary actions

19

Function of somatic nervous system

Voluntary actions

20

What does cerebrum do

Interprets senses
Carries out hard mental tasks

21

What does the cerebellum control

Muscles
Keeps balance

22

What does brain stem do

Controls involuntary actions

23

Link between brain and PNS

Spinal cord

24

Three things protecting brain

Meninges
Skull
Cerebrospinal fluid

25

Three things protecting spinal cord

Vertebrae
Meninges
Cerebrospinal fluid

26

Type of neuron carries impulses from body to CNS

Sensory

27

Type of neuron carries impulses from CNS to body

Motor

28

Reflex

An action that is preformed as a response to a stimulus without conscious thought

29

Concussion

A brain injury caused by a blow to head or violent shaking of head/body

30

Spinal cord injury

Traumatic blow to spine that fractures/dislocates vertebrae