Nervous System

Question 1

Function

Answer 1

The function of the nervous system is to detect impulses from the senses; control center of the body

Question 2

major organs

Answer 2

Brain
Spinal Cord
Senses
Nerves

Question 3

neurons vs neurological

Answer 3

neurons make up 10%

and neuroglia make up 90%

Question 4

dendrite

Answer 4

receive the nerve impulses from the senses or another neuron

Question 5

soma

Answer 5

body of the neuron that holds the nucleus

Question 6

node of ranvier

Answer 6

impulses jump from node to node, which increase speed of impulse

Question 7

myelin

Answer 7

insulates the axon. Produced by the Schwann cells

Question 8

axon

Answer 8

passageway for nerve impulses after cell body; end in axon terminal

Question 9

axon terminal

Answer 9

the button-like endings of axons through which axons make contact with other nerve cells.

Question 10

CSF

Answer 10

cerebrospinal fluid, protects the brain by preventing it from contacting the skull

Question 11

cerebrum

Answer 11

largest part. controls conscious activities, outer and inner.

Question 12

thalamus

Answer 12

2 bulb shape halves in center of brain, relays sensory impulse to cerebral cortex for processing and sorting

Question 13

hypothalamus

Answer 13

controls hormones released by pituitary gland, responsible for autonomic processes like body temp, hunger, sleep

Question 14

brainstem

Answer 14

located between cerebrum and spinal cord

Question 15

cerebellum

Answer 15

second largest part of brain, responsible for coordinating the movements directed by the cerebrum so that they are graceful and efficient, muscle memory

Question 16

spinal cord

Answer 16

31 pairs of spinal nerves branch out from the spinal cord, connecting to all parts of the body

Question 17

brainstem, midbrain

Answer 17

relays info to cerebrum. controls body movements and postures

Question 18

brainstem pons

Answer 18

the bridge, carries info from one side of the brain to the other, control of breathing

Question 19

brainstem medulla oblongata

Answer 19

located above spinal cord, transmits impulses between spinal cord and the brain, controls blood pressure, heart rate, swallowing, and coughing

Question 20

frontal lobe

Answer 20

Voluntary movements (walking), Reasoning & decision-making, memory, Ability to predict consequences of actions, planning, verbal communications

Question 21

parietal lobe

Answer 21

sensations, visual-spitial processing, body position

Question 22

occipital lobe

Answer 22

visual processing- vision and memory of objects

Question 23

temporal lobe

Answer 23

memory, comprehension and pronunciation of words, Sensations of smell and sound, Emotional association of memories

Question 24

merkels disk

Answer 24

touch

Question 25

hair follicle receptor

Answer 25

touch

Question 26

Ruffini's corpuscles

Answer 26

touch and pressure

Question 27

Pacinian corpuscles

Answer 27

pressure

Question 28

free nerve ending

Answer 28

pain and temp

Question 29

malleus

Answer 29

hammer

Question 30

incus

Answer 30

anvil

Question 31

stapes

Answer 31

stirrup

Question 32

cochlea

Answer 32

bony snail shaped structure containing membranes filled with fluid

Question 33

cornea

Answer 33

thick transparent tissue, allows light into eye

Question 34

pupil

Answer 34

the opening in the center of the iris. muscles regulate the amount of light entering the eye

Question 35

iris

Answer 35

located behind the cornea. colored part. works with pupil to regulate light entering the eye

Question 36

retina

Answer 36

located in the back of eye, rods- vision in low light, sensitive and cone-detection of colors, less sensitive

Question 37

lens

Answer 37

semi solid disc that directs light waves towards the retina

Question 38

farsighted

Answer 38

far sighted short eyeball

Question 39

near sighted

Answer 39

eye is too long