Structures of the CNS

Question 1

What are the functions of the frontal lobe?

Answer 1

• Personality
• Emotions
• Behavior
• Intellectual function

Question 2

What does the precentral gyrus do?

Answer 2

Initiates voluntary motion

Question 3

What does the postcentral gyrus control?

Answer 3

Sensation

Question 4

Function of the occipital lobe?

Answer 4

Visual reception

Question 5

What happens in the temporal lobe?

Answer 5

Primary auditory reception center

Question 6

Where is Wernicke’s area? Function?

Answer 6

• Temporal lobe
• Language comprehension
• Receptive aphasia if damaged

Question 7

Where is Broca’s area? Function?

Answer 7

• Frontal lobe
• Motor speech
• Expressive aphasia if damaged

Question 8

What does the basal ganglia control?

Answer 8

Automatic associated movements of the body

Question 9

What does the cerebellum/cerebellar system control?

Answer 9

• Coordination of voluntary movement and equilibrium

- Posture

Question 10

What does the spinothalamic tract transmit? What are its tracts?

Answer 10

• Lateral tract: pain and temp
• Anterior tract: crude/light touch
• Decuss in spinal cord

Question 11

What sensation does the posterior (dorsal) column transmit?

Where does it decussate?

Answer 11

• Position, vibration, finely localized touch

- Decussates at medulla

Question 12

What are the functions of the corticospinal/pyramidal tract?

Answer 12

• Voluntary motor (skilled/purposefull)
• Descends lateral column (except 10% that do not decussate -> anterior columb)
• 90% decussate at medulla

Question 13

What does the extrapyramidal system control?

Answer 13

• Muscle tone, gross automatic movements

- Primitive