Central Nervous System

Question 1

Peripheral nervous system

Answer 1

Nerves that extend from brain and spinal cord-carry info to(afferent) carry info to the brain from senses

Question 2

Motor division(efferent)

Answer 2

Carry info from brain to muscles, organs, glands

Question 3

Somatic nervous system

Answer 3

Controls voluntary skeletal muscles

Question 4

Autonomic nervous system

Answer 4

Regulates automatic, involuntary activity

Question 5

Sympathetic division

Answer 5

Gift or flight-causes circulatory system to put digestive system as top priority

Question 6

Parasympathetic division

Answer 6

Resting and digesting causes circulatory system to put digestive system as top priority

Question 7

Neurons

Answer 7

Transmit nerve impulses to body parts

Question 8

Dendrites

Answer 8

Bring nerve impulses toward cell body

Question 9

Axon

Answer 9

Moves impulses away from cell body towards destination

Question 10

Cell body

Answer 10

Carries out cell functions, keeps cell alive

Question 11

Neuroglia

Answer 11

Supports, insulates, and protects neurons

Question 12

Astrocytes

Answer 12

Type of neuroglia that protects that protects and supplies neurons with food

Question 13

Myelin sheath

Answer 13

Insulates nerve fibers which increases transmission rates

Question 14

Synaptic cleft

Answer 14

Separation space between neurons

Question 15

Irritability

Answer 15

Response to stimulus and converting it to an impulse

Question 16

Conductivity

Answer 16

Transmit impulses across the body

Question 17

Action potential

Answer 17

Impulses caused by ion movements in and out of neurons

Question 18

Resting state

Answer 18

K(inside axon) and Na(outside axon) ions not moving no impulse yet

Question 19

Depolarization

Answer 19

Neuron stimulated: Na move into the axon, more positively charged inside, then k exit the axon to compensate

Question 20

Repolarization

Answer 20

Ion pumps Na back out axon and K back until ions equalize again

Question 21

Meninges

Answer 21

Connective tissue covering of brain and spinal cord

Question 22

Nodes

Answer 22

Openings in myelin sheath where ion exchange takes place

Question 23

Neurotransmitters

Answer 23

Chemical messenger that carries impulse across the synapse

Question 24

Cerebrospinal fluid

Answer 24

Fluid that circulates around the brain and spinal cord creating s watery cushion

Question 25

Cerebrum

Answer 25

Largest part of brain, includes frontal, parietal, occipital, temporal lobes

Question 26

Frontal lobe

Answer 26

Short term memories, planning, voluntary skeletal muscles

Question 27

Parietal lobe

Answer 27

Pain, pressure, touch, temperature recognition

Question 28

Temporal

Answer 28

Hearing and smelling

Question 29

Occipital lobe

Answer 29

Visual memory

Question 30

Cerebellum

Answer 30

2nd largest part of brain, controls balance, equilibrium, muscle coordination

Question 31

Thalamus

Answer 31

Receives environment information and decided if important enough to focus attention on

Question 32

Hypothalamus

Answer 32

Controls involuntary activity like blood volume, appetite, sexual drive, metabolism

Question 33

Pituitary gland

Answer 33

Produces growth hormone

Question 34

Pons

Answer 34

Controls breathing, chewing, eyeball movement, facial expressions

Question 35

Medulla oblongata

Answer 35

Controls heart rate, blood pressure, breathing, swallowing, vomiting

Question 36

Pineal gland

Answer 36

Regulates sleep cycle

Question 37

Central nervous system

Answer 37

Brain, spinal cord-receives incoming sensory info and issues instructions to body