blood supply of brain

Question 1

WHat arteries provide about 80% of blood to the brain? what arteries provide 20%?

Answer 1

internal carotid arteries

vertebral arteries

Question 2

Know the areas that internal and vertebral arteries supply.

Answer 2

Knowit528

Question 3

Ophthalmic branch leaves the skull through the __________.

Answer 3

Optic foramen

Question 4

Ophthalmic artery gives rise to the ____________ artery.

Answer 4

central retina

Question 5

The anterior cerebral artery arches posteriorly following the corpus collosum, supplying the __________________________.

Answer 5

medial parts of the frontal and parietal lobes.

Question 6

What does the middle cerebral artery supply?

Answer 6

lateral surfaces of the frontal and parietal lobe (may not be right, check)

Question 7

MCA problems with different segments… What is important about the segments of the MCA?

Answer 7

The lower the number the more proximal the problem and the more grave the consequences.

Question 8

This runs caudally along the posterolateral aspect of the spinal cord and supplies the posterior 1/3 of that half of the cord.

Answer 8

Posterior spinal artery

Question 9

This joins its counterpart and runs caudally along the anterior midline of the spinal cord supplying the anterior 2/3 of the cord.

Answer 9

Anterior spinal artery

Question 10

This breaks into pontine arteries that supply the pons.

Answer 10

Vertebral-basilar artery

Question 11

What provides a connection between the internal carotid and the vertebral-basilar systems?

Answer 11

Circle of willis

Question 12

True/False: Cerebral veins don’t have valves.

Answer 12

True, thats why its uncomfortable to hang upside down.