Lecture 21

Question 0

What are the names of the sulci in the cerebral cortex?

Answer 0

• central sulcus
• parieto-occipital sulcus
• lateral sulcus

Question 1

What are the names of the lines of the cerebral cortex?

Answer 1

Same as cranial bones

• frontal lobe (x2)
• parietal lobe
• occipital lobe (x2)
• temporal lobe

Question 2

What is the name of the major fissure in the cerebral cortex?

Answer 2

The transverse fissure

Question 3

What are the names of the major gyri in the cerebral cortex?

Answer 3

• post-central gyrus

- pre-central gyrus

Question 4

What are the functions of lobes?

Answer 4

• conscious awareness

- association

Question 5

What is the function of the frontal lobe? (Motor cortex)

Answer 5

Motor
Efferent signals
Voluntary movement

Question 6

What is the function of the pre-frontal lobe?

Answer 6

Emotions/personality

• decision making
• anticipating consequences of our actions

Question 7

What is the function of the parietal lobe?

Answer 7

Sensory

• somatosensory
• integration of multiple types of sensory information
• association

Question 8

What is the function of the occipital lobe?

Answer 8

Vision

Information through our eyes

Question 9

What is the function of the temporal lobe?

Answer 9

Memory/hearing

Learning

Question 10

What is the primary motor cortex used for?

Answer 10

Execution of movement

Question 11

What is the pre-motor cortex used for?

Answer 11

Planning of movement

Question 12

What are the names of the major divisions of the cerebrum?

Answer 12

• cerebral cortex

- corpus callosum (white matter)

Question 13

What are the names of the major divisions of the diencephalon?

Answer 13

• thalamus

- hypothalamus

Question 14

What are the names of the parts of the brain stem?

Answer 14

• midbrain
• pons
• medulla oblongata

Question 15

What are the two internal structures of the brain?

Answer 15

• white matter (x3 types)

- grey matter

Question 16

What are the three types of white matter?

Answer 16

• commissural tracts
• projection tracts
• association tracts

Question 17

Where in the brain are the commissural tracts?

Answer 17

Axons cross from side to side

Go both ways

Question 18

What are the projection tracts?

Answer 18

Axons extended between cortex and other CNS area

Question 19

What is the association tract?

Answer 19

Axons go on same side within cerebral cortex

Communication between brain areas

Question 20

What is important about specific regions of the primary motor cortex?

Answer 20

It controls specific regions of the body

Question 21

What happens is one section of the primary motor cortex is damaged?

Answer 21

One specific region of the body will not have movement

Question 22

Are the cell bodies afferant or efferent in the primary motor cortex?

Answer 22

Efferent

Question 23

What do the fibres do when going from brain to medulla?

Answer 23

Most cross to the opposite side of the medulla

Question 24

Do axons descend until the spine?

Answer 24

Yes

Question 25

Where is the synapse of the nerve cells from the brain?

Answer 25

In spinal cord

Question 26

What’s important about specific regions of the primary somatosensory cortex?

Answer 26

They recieve sensory information from specific regions of the body