unit 3

Question 1

CNS

Answer 1

Central nervous system
Brain and spinal cord

Question 2

PNS

Answer 2

Peripheral nervous system
Everything else
Spinal and Cranial nerves

Question 3

Sensory Division

Answer 3

Sends messages to the brain (axons pointed towards brain)

Question 4

Motor Division

Answer 4

Sends messages away from the brain (axons pointed away from the brain)

Question 5

Astrocytes

Answer 5

Star shaped
Most numerous nerve cell
Pick up neurotransmitters
Protect neuron from blood (acts as bodyguard)

Question 6

Microgills

Answer 6

Kills viruses, bacteria, and dead cells

Question 7

Ependymal

Answer 7

Moves cerebrospinal fluid (cilia)

Question 8

Oligodendrocytes

Answer 8

Insulate neuron
Form Myelin Sheath

Question 9

Myelin Sheath

Answer 9

An insulating layer formed around nerves to protect them (around the Axon)

Question 10

Neuron

Answer 10

Transmit a nerve pulse
Cant regenerate

Question 11

Frontal Lobe

Answer 11

Moves skeletal muscle

Question 12

Occipital Lobe

Answer 12

vision is deciphered

Question 13

Temporal Lobe

Answer 13

Hearing is deciphered

Question 14

Parietal Lobe

Answer 14

Pain and temper

Question 15

Epithalamus

Answer 15

Part of diencephalon
Makes cerebrospinal fluid

Question 16

Thalamus

Answer 16

Part of diencephalon
Relay center for sensory nerves

Question 17

Hypothalamus

Answer 17

Part of diencephalon
Controls body temperature, emotion, and pleasure center

Question 18

Pons

Answer 18

Part of brain stem
Controls breathing

Question 19

Midbrain

Answer 19

Part of brain stem
Controls vision

Question 20

Medulla Oblongata

Answer 20

Part of brain stem
Controls heart rate, swallowing, and vomiting

Question 21

Dura Matter

Answer 21

Outermost layer
Looks like leather
Under the skull bone

Question 22

Arachnoid Matter

Answer 22

Looks like a spider web
Second layer
Filled with cerebrospinal fluid
Protects the brain (from concussion) so it doesn’t hit the skull; acts as a water cushion

Question 23

Pia Matter

Answer 23

Innermost layer
Prevents bacteria from entering the brain

Question 24

Cerebrospinal Fluid (CSF)

Answer 24

Made by Epithalamus
Moved by ependymal cells
Have about ½ a cup of it

Question 25

Blood Brain Barrier

Answer 25

Blood vessels are so small that not even bacteria can get in

Question 26

Dopamine

Answer 26

pleasure

Question 27

Nicotine

Answer 27

Squeezes out all dopamine

Question 28

Cocaine

Answer 28

Covers dopamine recyclers Causes pleasure for longer Body builds more dopamine recyclers as a result Causes no pleasure in life afterwards

Question 29

Retina

Answer 29

Has photoreceptors

Question 30

rods

Answer 30

Night vision and peripheral vision

Question 31

cones

Answer 31

color receptors