Nervous system

Question 1

CSF

Answer 1

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

Question 2

Cerebrum

Answer 2

divided into 2 hemispheres and largest part of the brain

Question 3

(4) Lobes of cerebrum

Answer 3

frontal, parietal,temporal, occipital

Question 4

thalamus

Answer 4

2 bulb-shaped halves in the center of the brain relays sensory impulses to the cerebral cortex for processing and sorting

Question 5

hypothalamus

Answer 5

controls hormones released by the pituitary gland, responsible for autonomic processes( body temp, hunger, sleep, thirst, blood, and volume)

Question 6

brainstem

Answer 6

located between the cerebrum and spinal cord

Question 7

(3) regions of brainstem

Answer 7

midbrain, pons, medulla oblongata

Question 8

cerebellum

Answer 8

coordinating movements directed by the cerebrum so they’re graceful and efficient, all involuntary movements

Question 9

spinal cord

Answer 9

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

Question 10

function of the nervous system

Answer 10

detect impulses from the senses: control center of the body

Question 11

major organs of the nervous system

Answer 11

brain, spinal cord, senses, nerves

Question 12

difference between neurons and neuroglia

Answer 12

neurons are made up of 10% of the system and neuroglia ( “nerve-glue”) makes up 90% of the nervous system

Question 13

dendrite

Answer 13

receive the nerve impulses from the senses or another neuron

Question 14

soma

Answer 14

body of the neuron that holds nucleus

Question 15

node of ranvier

Answer 15

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

Question 16

myelin

Answer 16

insulates the axon produced by the schwann cells

Question 17

axon

Answer 17

passage way for nerve impulses after cell body: end of axon terminal

Question 18

axon terminal

Answer 18

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

Question 19

5 different types of sensory receptors

Answer 19

hair follicle receptor, ruffini’s corpuscle, pacinian corpuscle, merkel’s disk, free nerve ending

Question 20

papillae

Answer 20

bumps on your tongue (taste buds)

Question 21

3 tiny bones and nickname

Answer 21

malleus (hammer), incus (anvil), stapes(stirrup)

Question 22

cochlea

Answer 22

bony snail-shaped structure containing membranes filled with fluid

Question 23

cornea

Answer 23

made of thick, transparent tissue

Question 24

pupil

Answer 24

opening in the center of Iris

Question 25

iris

Answer 25

behind the cornea and the colored part of the eye

Question 26

retina

Answer 26

contains thousands of photoreceptors

Question 27

lens

Answer 27

semi-solid disc that sends light waves to the retina