PHC CH 7.6

Question 1

What is the nervous system?

Answer 1

The master controller

Question 2

Brain and spinal cord

Answer 2

CNS

Question 3

12 cranial nerve pairs and 31 spinal nerve pairs

Answer 3

PNS

Question 4

PNS split into

Answer 4

Somatic and autonomic

Question 5

Somatic consists of

Answer 5

Sensory and motor nerves

Question 6

Autonomic consists of

Answer 6

Sympathetic and parasympathetic

Question 7

Speeds up body; starts the fight or flight response

Answer 7

Sympathetic

Question 8

Slows down body after fight or flight response

Answer 8

Parasympathetic

Question 9

Spaces between axons and dendrites

Answer 9

Synapse

Question 10

Carry impulses toward the cell body; many

Answer 10

Dendrites

Question 11

Carry impulses away from body; single

Answer 11

Axon

Question 12

Afferent

Answer 12

Sensory nerves

Question 13

Cerebellum

Answer 13

Posture, balance, muscle coordination

Question 14

Cerebrum

Answer 14

Thought, reasoning, memory, speech, sensation, etc

Question 15

Diencephalon

Answer 15

Contains thalamus and hypothalamus

Question 16

Thalamus

Answer 16

Relay center and directs sensory impulses to the cerebrum

Question 17

Hypothalamus

Answer 17

Regulates and controls the autonomic nervous system, temperature, appetite, water balance, sleep. Emotions

Question 18

Midbrain

Answer 18

Conducting impulses between brain parts and for certain eye and auditory reflexes

Question 19

Pons

Answer 19

Chewing, tasting, and saliva production; respiration

Question 20

Medulla oblongata

Answer 20

Heartbeat, respiration, swallowing, coughing, and blood pressure

Question 21

Spinal cord

Answer 21

Protected by vertebrae; Carrie’s sensory to the brain and motor messages from the brain to the muscles and glands

Question 22

Meninges three layers from toughest to weakest

Answer 22

Dura mater, arachnoid membrane, and pia mater,

Question 23

How many ventricles does the brain have?

Answer 23

Four

Question 24

Cerebrospinal fluid

Answer 24

Shock absorber to protect brain and spinal cord; flows through ventricles

Question 25

Cerebrovascular accident or stroke or apoplexy

Answer 25

When blood flow to brain is impaired

Question 26

Ischemic stroke

Answer 26

Blockage

Question 27

Hemorrhagic stroke

Answer 27

Blood vessel in brain bursts and bleeds

Question 28

Nerve pain

Answer 28

Neuralgia

Question 29

Shingles

Answer 29

Acute inflammation of nerve cells caused by herpes virus

Question 30

Parkinson’s disease

Answer 30

Degeneration of brain cells

Question 31

A chronic, progressive, disabling condition resulting from a degeneration of the myelin sheath

Answer 31

Multiple sclerosis

Question 32

Increases rate of impulse tranmission and insulates and maintains the axon

Answer 32

Myelin sheath