Nervous system

Question 1

Function

Answer 1

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

difference between neurons and neurogila

Answer 3

Neurons make up 10% of the nervous system and neurogila 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

produces the myelin

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

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

largest part of the brain, controls conscious activities

Question 13

frontal lobe

Answer 13

Voluntary movements (walking), Reasoning & decision-making, Memory, Planning, Verbal communication

Question 14

parietal lobe

Answer 14

Sensations, Visual-spatial processing, Body position

Question 15

occipital lobe

Answer 15

Visual processing- vision & memory of objects

Question 16

temporal lobe

Answer 16

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 -“master endocrine gland”
Responsible for autonomic processes (body temperature, hunger, sleep, thirst, blood volume, etc)

Question 19

brainstem

Answer 19

Located between the cerebrum and spinal cord.

Question 20

midbrain

Answer 20

Controls body movements and postures

Question 21

pons

Answer 21

Carries info from one side of brain to the other (why its called the bridge), Central control of breathing

Question 22

medulla oblongata

Answer 22

Transmits impulses between spinal cord and the brain,

Controls blood pressure, heart rate, swallowing, and coughing

Question 23

cerebellum

Answer 23

Second largest part of brain, Near back of skull, Responsible for coordinating the movements directed by the cerebrum so that they are graceful and efficient

Question 24

spinal cord

Answer 24

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

Question 25

merkels disk

Answer 25

touch

Question 26

free nerve ending

Answer 26

pain and temperature

Question 27

hair follicle receptor

Answer 27

touch

Question 28

ruffini’s corpuscle

Answer 28

touch and pressure

Question 29

pacinian corpuscle

Answer 29

pressure

Question 30

Papillae

Answer 30

they are the bumps on your phone and contain taste buds

Question 31

malleus

Answer 31

hammer

Question 32

incus

Answer 32

anvil

Question 33

stapes

Answer 33

stirrup

Question 34

cochlea

Answer 34

a bony snail-shaped structure containing membranes filled with fluid.

Question 35

cornea

Answer 35

is made of thick, transparent tissue. It allows light into the eyes.

Question 36

pupil

Answer 36

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

Question 37

iris

Answer 37

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

Question 38

retina

Answer 38

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

Question 39

lens

Answer 39

is a semi-solid disc that directs light waves towards the retina. It is controlled by ciliary muscles and suspensory ligaments.

Question 40

Farsighted vs Nearsighted

Answer 40

A nearsighted person sees near objects clearly, while objects in the distance are blurred. And a farsighted person sees far things clearly than closer objects.