Central Nervous System

Question 1

Cerebrospinal fluid

Answer 1

1. support
2. protection (shock absorber)
3. transport/nutrition
   Contains glucose, protein, salt, urea
   Excess is reabsorbed into the blood stream
   Formed in the blood

Question 2

Formation of CSF

Answer 2

Formed in the brain’s ventricles

Question 3

Protection of the CNS

Answer 3

1. cranium and vertebral column
2. meninges
3. cerebrospinal fluid

Question 4

Cerebrum

Answer 4

Cerebral cortex is grey matter (outer layer)
Inside the white matter
Basal ganglia is inside the white matter

Question 5

Basal ganglia

Answer 5

internal grey matter

Question 6

Cerebral cortex areas

Answer 6

sensory, motor, and association areas

Question 7

Sensory area (cerebral cortex)

Answer 7

interprets impulses from the senses

Question 8

Motor area (cerebral cortex)

Answer 8

muscular movements

Question 9

Association area (cerebral cortex)

Answer 9

intellectual, emotional responses

Question 10

Cerebellum

Answer 10

1. posture and balance - receives information from the inner ear
2. coordination of voluntary movement - receives sensory info from stretch receptors in muscles

Question 11

Layers of the meninges

Answer 11

cranium, dura mater, arachnoid, sub arachnoid, pia mater

Question 12

Spinal cord meninges

Answer 12

has the same protection as the brain, bu the dura mater isn’t connected to bone; epidural space contains fat, connective tissue, vessels

Question 13

Spinal cord

Answer 13

A column that runs from the foramen magnum to L2 - around 44cm long

Question 14

Afferent nerves

Answer 14

to the CNS from the receptor 
 Sensory neurons (unipolar)

Question 15

Efferent nerves

Answer 15

From the CNS to muscle
 Motor neurons (multipolar)

Question 16

Interneurons

Answer 16

connector, association neurons

bipolar

Question 17

Hypothalamus

Answer 17

Lies in the middle of the brain, mostly concerned with homeostasis
regulates ans, body control, food and water intake, urinary contractions, sleeping patterns

Question 18

Functions of cerebral cortex

Answer 18

• thinking, reasoning, learning
• memory
• intelligence
• sense of responsibility
• perception of the senses
• initiation, control of voluntary muscle contraction