nervous review

Question 1

a motor neuron conducts impulses

Answer 1

from the central nervous system to muscles

Question 2

in relax arc the nerve impulses is started

Answer 2

in sensory receptors

Question 3

the sympathetic system is responsible for

Answer 3

emergency situations

Question 4

what is cerebrum function

Answer 4

thinking memory

Question 5

what is cerebellum function?

Answer 5

Muscle coordination

Question 6

what is the thalamus function?

Answer 6

Sensory input

Question 7

What is the hypothalamus function?

Answer 7

Homeostasis

Question 8

What is the mid brains function?

Answer 8

Vision

Question 9

what is the corpus callosum function?

Answer 9

Connects left and right hemispheres

Question 10

What is medulla oblongata is function

Answer 10

Controls heart blood pressure, breathing

Question 11

The peripheral nervous system contains

Answer 11

Cranial nerves and spinal nerves

Question 12

The PNS is subdivided it into

Answer 12

Somatic an automatic system

Question 13

The somatic system serves

Answer 13

Muskoskeletal system an extra sense organs

Question 14

the autoatic system serves

Answer 14

internal body organs 

Question 15

What are the two divisions of auto somatic system?

Answer 15

parasympathetic and sympathetic

Question 16

when schwann cells wrap around an axon this is called

Answer 16

myelin sheath

Question 17

Gaps where myelin is not present on a neuron is

Answer 17

node of ranveir

Question 18

an impulse, jumping from node to node is called

Answer 18

Saltatory conduction

Question 19

when an axon is not conducting an impulse, the inside of the neuron is

Answer 19

Negative and at -65 mv

Question 20

What does the sodium potassium pump do in resting potential?

Answer 20

maintain uneven distribution of Na and K ions am

Question 21

In resting potential where are sodium ions are pumped

Answer 21

Outside and potassium in

Question 22

what measures voltages during conductions of impulse

Answer 22

oscilloscope

Question 23

Two main functions of spinal cord t

Answer 23

Receives info and send messages to brain

Question 24

What is gray matter?

Answer 24

has unmyelinated cell bodies and contains interneuron

Question 25

what is white matter

Answer 25

have myelinated interneuron a that run together in tracts

Question 26

what does action’s potential mv change to

Answer 26

+40mv

Question 27

What is the membrane of the first neuron in a synapse called

Answer 27

presynaptic membrane

Question 28

What is the membrane of the next neuron in a synapse called

Answer 28

postsynaptic membrane

Question 29

what is the gap between two membranes called

Answer 29

synaptic cleft

Question 30

i when a nerve reaches a synaptic ending what happens

Answer 30

the membrane becomes permeable to calcium ions, causing milofilamenfs to pull vesicles

Question 31

what enzyme breaks down acetylcholine

Answer 31

acetylcholinesterase

Question 32

how are neurotransmitters removed

Answer 32

removed by enzymes or rapidly reabsorbed

Question 33

how many cranial nerves are there

Answer 33

12 pairs

Question 34

how many pairs of spinal nerves

Answer 34

31

Question 35

what do receptors do

Answer 35

receives environment stimulus

Question 36

what do effectors do

Answer 36

bring reaction to stimulus

Question 37

he neurotransmitte used by the sympathetic nervous system is:

Answer 37

norepinephrine

Question 38

outside of a neuron, the cytoplasm inside a resting neuron is :

Answer 38

negatively charged and the sodium ion concentration is lower inside than outside

Question 39

increased sodium ions and a decreased potassium ions is observed during

Answer 39

action potential downswing

Question 40

The distribution of sodium and potassium ions across the membrane of an axon is maintained by:

Answer 40

active transport

Question 41

resting potential, which of the following conditions exist outside the neuron?

Answer 41

excess potassium

Question 42

what event occurs during repolarization

Answer 42

potassium gates open