Week 4: Tutorial & Canvas

Question 1

The midbrain consists of the…

Answer 1

tegmentum & colliculi (tectum)

Question 2

What separates the cerebellum from the cerebral hemisphere?

Answer 2

Transverse fissure & tentorium

Question 3

Cerebral cortex is …… matter. Immediately beneath the cortex is ….. matter.

Answer 3

1. Grey
2. White

Question 4

Role of the longitudinal fissure?

Answer 4

Splits the cerebral hemisphere into left and right

Question 5

Another name for the lateral sulcus is…..

Answer 5

The sylvian fissure

Question 6

Function of the pre-central gyrus

Answer 6

Primary motor area

Question 7

Function of the post-central gyrus

Answer 7

Primary somatosensory area

Question 8

Function of the superior temporal gyrus

Answer 8

Hearing

Question 9

Function of the cingulate gyrus

Answer 9

Emotion and motivation (part of limbic system)

Question 10

What type of matter is the corpus callosum? And what is its role?

Answer 10

White matter. Role is to join the two hemispheres.

Question 11

The midbrain has what white matter feature ventrally on each side?

Answer 11

Cerebral peduncle

Question 12

The dorsal midbrain is called the…..

What elements form this?

Answer 12

Tectum (roof)

Superior colliculi involved in eye movements and inferior colliculi part of auditory pathway

Question 13

What makes up the tectum?

Answer 13

The superior colliculi (involved in eye movements) and inferior colliculli (part of auditory pathway)

Question 14

What is the basilar artery?

Answer 14

The main artery which supplies blood to the back of the brain

Question 15

What is contained within the cerebral cortex?

Answer 15

The supplementary motor area and premotor area

Question 16

What is the supplementary motor area responsible for?

Answer 16

Plans complex movement
Coordinates hand movement

Question 17

What is the premotor area responsible for? What particular group of muscles?

Answer 17

Guides body movement by integrating sensory info.

Axial muscles (involved in eye movement and orientation)

Question 18

What is the Broca?

Answer 18

In frontal lobe. Responsible for speech production.

Question 19

What would happen if the Broca region was damaged?

Answer 19

Dyphasia/aphasia ie dysfunction of word expression. Can hear sound/voice but can’t make sense of it.

Question 20

What would happen if Wernickes area was damaged?

Answer 20

Dyphasia/aphasia ie dysfunction of word expression. Can hear sound/voice but can’t make sense of it.

Question 21

What is the somatosensory association area?

Answer 21

Top of parietal lobe - processes info and object recognition.

Question 22

What would happen if the somatosensory association area was damaged?

Answer 22

Astereognosis. Inability to identify an object by touch ie requires other sensory input such as vision.

Question 23

What is the difference between unilateral and bilateral auditory cortex damage?

Answer 23

Bilateral = complete hearing loss vs unilateral = hearing impairment.

• hearing loss = can still react to startling sounds via reflex