Cerebral Cortex and circle of willis

Question 1

What is the name for the deep grooves in the cerebral Cortex?

Answer 1

Fissures

Question 2

List the 3 fissures which separate the lobes in each hemisphere of the brain

Answer 2

Central sulcus, lateral sulcus, parieto-occipital sulcus

Question 3

What is the term for the up and down corrugations in the cerebral Cortex?

Answer 3

Up gyrus (gyri), down sulcus (sulci)

Question 4

What is the structure which separates but also connects the two hemispheres of the brain?

Answer 4

Corpus callosum

Question 5

Cerebral Cortex consists of grey matter (around the periphery of the cortex) and white matter (more in the middle) - what are the different components of white and grey matter?

Answer 5

White matter = axons of neurons
Grey matter = cell bodies

Question 6

What are the 4 lobes present in each hemisphere of the brain?

Answer 6

Parietal
Occipital
Frontal
Temporal

Question 7

Main function of frontal lobe

Answer 7

Motor

Question 8

Main function of parietal lobe

Answer 8

Sensory

Question 9

Main function of occipital lobe

Answer 9

Vision

Question 10

Main function of Temporal lobe

Answer 10

Auditory

Question 11

Motor areas of frontal lobe, list them and their functions

Answer 11

Primary motor Cortex- initiates movement
Association motor area - remembers, helps us to remember and repeat patterns, information stored re movements

Question 12

What is broca’s area?

Answer 12

Part of the motor area responsible for speech- it’s present in 1 hemisphere only - usually in the left hemisphere for right handed people and vice versa

Question 13

List 3 somatic sensations

Answer 13

Pain, temperature, touch

Question 14

What is the function of the primary sensory cortex?

Answer 14

Receives the 3 somatic sensations

Question 15

What is the function of the sensory association area?

Answer 15

Processes and stores knowledge of senses, memory of sensation

Question 16

Where is the primary sensory cortex located?

Answer 16

In the parietal lobe

Question 17

Which cranial nerve provides input to the primary auditory cortex?

Answer 17

8th, Vestibular

Question 18

Where is the primary visual and visual Association area located?

Answer 18

Occipital lobe

Question 19

What’s the circuit called which supplies blood to the brain

Answer 19

Circle of willis

Question 20

Which artery serves the posterior cerebral arteries

Answer 20

Vertebral arteries

Question 21

Which artery serves the anterior cerebral arteries

Answer 21

Internal carotid artery

Question 22

What’s the process called where blood transmits between posterior and anterior tissue

Answer 22

Anastmosis

Question 23

Name the 3 cerebral arteries

Answer 23

Mid, anterior and posterior

Question 24

The vertebral arteries join to form which artery

Answer 24

Basically artery