nervous system

Question 1

function of Nervous System

Answer 1

detect impulses from the senses and is the control center of the body

Question 2

major organs of the nervous system

Answer 2

brain, spinal cord, senses, and nerves

Question 3

difference between neurons and neuroglia

Answer 3

neurons- make up 10% of the nervous system

neuroglia- make up 90% of the nervous system

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

schwann cells

Answer 6

create the myelin sheath

Question 7

node of ranvier

Answer 7

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

Question 8

myelin

Answer 8

insulates the axon. Produced by the Schwann cells

Question 9

axon

Answer 9

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

Question 10

axon terminal

Answer 10

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

Question 11

CSF

Answer 11

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

Question 12

cerebrum

Answer 12

Controls conscious activities

Question 13

frontal lobe

Answer 13

Voluntary movements (walking), Reasoning & decision-making, Memory, Ability to predict consequences of actions, Planning, Verbal communication

Question 14

parietal lobe

Answer 14

controls sensations, visual-spatial processing, and body position

Question 15

occipital lobe

Answer 15

controls visual processing- vision & memory of objects

Question 16

Temporal Lobe

Answer 16

controls memory, comprehension & pronunciation of words, sensations of smell and sound, emotional association of memories

Question 17

thalamus

Answer 17

Relays sensory impulses to the cerebral cortex for processing and sorting

Question 18

hypothalamus

Answer 18

Controls hormones released by pituitary gland and Responsible for autonomic processes

Question 19

brainstem

Answer 19

Located between the cerebrum and spinal cord

Question 20

midbrain

Answer 20

Relays info to cerebrum, controls body movements and postures

Question 21

pons

Answer 21

Carries info from one side of brain to the other and main control for breathing

Question 22

medulla oblongata

Answer 22

Transmits impulses between spinal cord and the brain

also controls blood pressure, heart rate, swallowing, and coughing

Question 23

cerebellum

Answer 23

Responsible for coordinating the movements directed by the cerebrum such as involuntary movements

Question 24

spinal cord

Answer 24

Relays impulses from the PNS to the brain

Question 25

hair follicle receptor

Answer 25

touch

Question 26

ruffini’s corpuscle

Answer 26

touch and pressure

Question 27

pacinian corpuscle

Answer 27

pressure

Question 28

merkel’s disk

Answer 28

touch

Question 29

free nerve ending

Answer 29

pain and temperature

Question 30

malleus

Answer 30

hammer

Question 31

incus

Answer 31

anvil

Question 32

stapes

Answer 32

stirrup

Question 33

cochlea

Answer 33

bony snail-shaped structure containing membranes filled with fluid

Question 34

cornea

Answer 34

allows light into the eye

Question 35

pupil

Answer 35

muscles regulate the amount of light entering the eye

Question 36

iris

Answer 36

works with pupil to regulate light entering the eye

Question 37

retina

Answer 37

located in the back of the eye, contains thousands of photoreceptors

Question 38

lens

Answer 38

semi-solid disc that directs light waves towards the retina

Question 39

farsighted vs nearsighted

Answer 39

farsighted- can’t see near

nearsighted- can’t see far