Chapter 9 Nervous System Anatomy

Question 1

Three functions?

Answer 1

Sensory input, integration, and motor output.

Question 2

Sensory input

Answer 2

Electrical impulse sent from eyes, ears, nose, tongue, or skin to the CNS

Question 3

Integration

Answer 3

Info from sensory organs are interpreted

Question 4

Motor output

Answer 4

Response generated from the interpretation of sensory input. Occurs in voluntary or involuntary movement.

Question 5

What muscles are involuntary movement?

Answer 5

Cardiac and smooth muscle

Question 6

What muscle is voluntary movement

Answer 6

Skeletal muscle

Question 7

CNS

Answer 7

Central Nervous System. Brain and spinal cord

Question 8

PNS

Answer 8

Peripheral Nervous System. All nerves outside of CNS

Question 9

Cerebrum

Answer 9

2 hemispheresand 4 lobes

Question 10

Lobes of cerebrum (4)

Answer 10

Occipital, Temporal, Parietal, Frontal

Question 11

Occipital lobe

Answer 11

Eyesight/vision

Question 12

Temporal

Answer 12

Smell, hearing, language, and factual/visual memory

Question 13

Frontal

Answer 13

Controls movement, personality/emotion, problem/solution, and speech

Question 14

Parietal

Answer 14

Receives and interprets sensory impulses to touch, pain, pressure, and temp

Question 15

See notes and quiz on position of the lobes

Question 16

Left brain

Answer 16

Logical

Question 17

Right brain

Answer 17

Creative, think outside the box, emotional

Question 18

What connects the left and right brain?

Answer 18

Nothing except the brain stem

Question 19

Brain stem

Answer 19

Connects the cerebrum with the spinal cord

Question 20

Pons

Answer 20

Bridge where nerves cross over

Question 21

Mid brain

Answer 21

Passageway for electrical impulses

Question 22

Medulla oblongata

Answer 22

Vital functions (Respiratory rate, heart rate, blood pressure, and temp)

Question 23

Quiz yourself on where each part of the brainstem is

Question 24

Cerebellum

Answer 24

Controls balance and equilibrium. Provides precise timing for skeletal muscle. Coordination of body movements.

Question 25

Spinal cord

Answer 25

Transmits nerve impulses between brain, limbs, and lower part of body. Protected by CSF and spinal column. Composed of neural tissue.

Question 26

Protection of CNS

Answer 26

Scalp, skin, skull, vertebral column, meninges, CSF, blood-brain barrier.

Question 27

Blood-brain barrier

Answer 27

“Filter”. Filters blood from arteries that supply the brain to have extra security and cleanliness. Not fool proof

Question 28

PNS functions and what it’s composed of

Answer 28

Composed of 12 pairs of cranial nerves and 31 pairs of spinal nerves. Receives and transmits messages.

Question 29

Afferent

Answer 29

Sensory info to the brain. Sensory nerves. Sends messages towards CNS

Question 30

Efferent

Answer 30

Motor info out/away from the brain. Motor nerves. Receives messages from CNS.

Question 31

Neuron

Answer 31

Basic cell of nervous system (singular nerve cell)

Question 32

Cranial nerves

Answer 32

Nerves that connect the brain to mostly to cranial features

Question 33

Spinal nerves

Answer 33

Nerves that branch off from the spinal cord.