Brain

Question 1

Blood supply of the optic nerve

Answer 1

Opthalmic artery

Question 2

Blood supply of the optic chiasm

Answer 2

Branches from

Internal carotid
Posterior and anterior communicating
Anterior cerebral

Question 3

Blood supply to optic tract

Answer 3

MCA

Question 4

Blood supply of lateral geniculate nucleus

Answer 4

Anterior chroidal branches of MCA

Thalamogeniculate branches of PCA

Question 5

Blood supply of optic radiations

Answer 5

MCA

Question 6

Blood supply of calcarine sulcus

Answer 6

PCA (some supply from MCA)

Question 7

Which arteries do the vertebral arteries arise from?

Answer 7

Subclacian arteries

Question 8

Which arteries does the internal carotid give rise to distal to the cavernous sinus?

Answer 8

Opthalmic

Posterior communicating

Anterior chorodial

Anterior cerebral

Middle cerebral

Question 9

What does the anterior choroidal artery supply?

Answer 9

supplies structures in the brain important for motor control and vision.

Question 11

Branches of the vertebral arteries within the cranial vault?

Answer 11

Meningeal branch
Anterior and posterior spinal arteries
Posterior inferior cerebellar artery

Question 12

Two vertebral arteries converge to form what?

Answer 12

Basilar artery

Question 13

How does the basilar artery terminate?

Answer 13

Bifurcating into the PCAs

Question 14

Anterior cerebral arteries supply?

Answer 14

Anteromedial portion of the cerebrum

Question 15

MCAs supply?

Answer 15

The majority of the lateral part of the brain

Question 16

PCA’s supply?

Answer 16

Both the medial and lateral parts of the posterior cerebrum.

Question 17

4 main causes of CVA?

Answer 17

Thrombosis – obstruction of a blood vessel by a locally forming clot.

Embolism – obstruction of a blood vessel by an embolus formed elsewhere.

Hypoperfusion – lack of blood supply to the brain, due to systemically low blood pressure (e.g shock).

Haemorrhage – an accumulation of blood within the cranial cavity.

Question 18

3 types of white matter tracts

Answer 18

Commissural

Association

Projection

Question 19

Commissural fibres role

Answer 19

Interconnect the corresponding regions of the two cerebral hemisphere

Question 20

Association fibres role

Answer 20

Connect the various cortical regions WITHIN a cerebral hemisphere

Question 21

Projection fibres role

Answer 21

Connect the cerebral cortex with the lower part of the brain

Question 22

Basal nuclei role

Answer 22

Supraspinal control centre for skeletal muscle