1- Introduction To CNS

Question 1

Most activities of the nervous system are initiated by ?

Answer 1

Sensation exciting the sensory receptors

Question 2

sensation can either cause (2) ?

Answer 2

1- immediate reaction from brain
2- stored as memory & determine body reaction later

Question 3

motor activities / functions include ? (3)

Answer 3

• contraction of skeletal muscles
• contraction of smooth muscle
• secretion of active chemical substances by both exocrine and endocrine glands.

Question 4

motor includes both ——— & ———— divisions ?

Answer 4

Somatic & autonomic

Question 5

lower regions : automatic muscle responses to ?

Answer 5

Sensory stimuli

Question 6

higher regions : complex muscle movement controlled?

Answer 6

By brain

(Slide 8 )

Question 7

99% of sensory information are—————— by the brain) as —————?

Answer 7

discarded , unimportant

Question 8

3 ex of discarded sensory info ?

Answer 8

• contact with clothing,
• field of vision
• most of voices heard

Question 9

Example of 1 % important sensory info ?

Answer 9

Hand on hot stove to respond remove hand

Question 10

spinal cord level functions controlled (4)?

Answer 10

1- walking movement
2- reflex withdrawal
3- reflex stiffen legs support against gravity
4- reflexes control local blood vessels , GIT movements, urinary excretion

Question 11

lower brain or subcortical level functions (4) ?

Answer 11

1. Control of arterial pressure & respiration
2. control equilibrium
3. feeding reflex ( salivation , licking of lips )
4. emotional pattern ( excitement , anger , sexual respond , pain , pleasure

Question 12

higher brain or cortical level function ?

Answer 12

Memory storehouse
Thought process