Down Flashcards Preview

Biology 12: Nervous System > Down > Flashcards

Flashcards in Down Deck (25)
Loading flashcards...
1

The stage of action potential where sodium ions begin to move into cell

Depolarization

2

A neurotransmitter released by the sympathetic nervous system to induce the fight or flight response

Noradrenalin

3

WHAT carry nerve impulses away from CNS

Motor/efferent

4

A type of neuron found only in the CNS

Interneuron

5

The portion of the cerebrum responsible for understanding speech

Parietal lobe

6

The portion of the nervous system which puts you into a lore relaxed state

Parasympathetic

7

The stage of action potential where potassium ions begin to move out of cell

Repolarization

8

The name given to the “nerve impulse” that passes along a neuron

Action potential

9

WHAT contains all the nerves that effect the skeletal muscles and sensory organs

The somatic nervous system

10

Portion of the nervous system that is not the CNS

Peripheral

11

The portion of the brain that receives all information from the senses (except smell)

Thalamus (decides where to send it)

12

An involuntary response which bypasses the brain

Reflex

13

A substance which costs the axons of nerve cells

Myelin

14

The part of the brain responsible for conscious thought

Cerebrum lobe

15

The “master gland”

Pituitary

16

WHAT occurs because of the myelinated nature of the axon

Saltatory transmission

17

These substances break down neurotransmitters in the synaptic cleft after their release

Enzymes

18

The part of the brain responsible for balance

Cerebellum

19

A horizontal section that connects the right and left hemispheres of the brain

Corpus Callosum

20

WHAT make the post synaptic membrane less permeable to sodium and therefore less likely to produce action potential

Inhibitory transmitter

21

The live of the cerebrum responsible for hearing and smelling

Temporal lobe

22

WHAT in the spinal cord contains bundles of myelinated axons

White matter

23

How many pairs of spinal nerves do we have

31

24

WHAT in the spinal cord contains mostly cell bodies

Grey matter

25

The sodium/potassium pump requires the energy molecule

ATP