Central Nervous System (CNS)

Question 1

Central Nervous System (CNS)?

Answer 1

Brain & spinal cord only

Question 2

Cerebrum?

Answer 2

Outermost part of brain

Covered by cerebral cortex (grey matter)
- layers of cells

Question 3

Corpus Callosum?

Answer 3

Where axons meet & connect

Question 4

Frontal Lobe?

Answer 4

Controls thinking, planning, organizing, problem solving, short-term memory, movement

Question 5

Parietal Lobe?

Answer 5

Interprets sensory information (pain, proprioception, temperature, touch)

Question 6

Occipital Lobe?

Answer 6

Processes images from your eyes & links that information with images stored in memory

Question 7

Temporal Lobe?

Answer 7

Processes information from your senses (smell, taste, sound).

Also plays a role in memory storage

Question 8

Primary Motor vs Pre-motor?

Answer 8

Primary motor senses touch, then association interprets the info.

Question 9

Hippocampus?

Answer 9

Stores memories you can pull out & use later

Question 10

Hypothalamus?

Answer 10

Emotions behaviors:

eg.)feelings of excitement or sadness

Question 11

Thalamus?

Answer 11

Gatekeeper

Relays info. as it goes up to the brain
- important for sensory information

Question 12

Brainstem?

Answer 12

Midbrain, Pons, Medulla

Highway system for sensory info. to reach Thalamus & Cerebellum, AND motor information to reach muscles via spinal cord

Controls autonomic functions (breathing, digestion, HR, BP)

Question 13

Cranial Nerves?

Answer 13

NOT part of the brain but part of the PNS!!!!
- they go off spinal cord into brain stem

12 different ones

Question 14

Cerebellum?

Answer 14

Controls Muscle posture, Balance, Coordination

Gets info. from different areas & helps to execute the motor plan

Sends feedback to motor cortex to stimulate or inhibit skeletal muscle

Question 15

Spinal cord?

Answer 15

Grey & whiter matter

Different tracts carry different info:

• Tracts that go UP = temperature, light touch info. etc… (one tract for each)
• Tracts that go DOWN = motor info. (descends)

Question 16

How we feel pain?

Answer 16

1) Pain starts by moving into the peripheral receptors
2) Pain receptors send info. from arm/leg to spinal nerves
3) Then spinal cord
4) Then up to brain stem to thalamus & Somatosensory cortex
5) Then pain is felt

Question 17

Reaction to pain?

Answer 17

Motor cortex gets me to move to get up, sit down, cry (from spinal to muscles)

Hippocampus banks this info.