More anatomy stuff

Question 1

What spinal cord areas are most vulnerable to blood vessel occlusions? What are these areas called?

Answer 1

T4 and L1. Called watershed areas.

Question 2

What are the 2 main arterial supplies to the brain?

Answer 2

vertebral/basilar artery system and the internal carotid

Question 3

What supplies the corpus callosum?

Answer 3

Anterior cerebral artery

Question 4

What is supplied by the anterior cerebral artery?

Answer 4

corpus callosum, medial frontal and parietal cortex, leg area of the motor cortex

Question 5

What is one nocticable clinical feature associated with occlusion of the anterior cerebral artery?

Answer 5

supplies the leg area of the motor cortex, so occulsion leads to contralateral lower body paralysis

Question 6

What important structures are supplied by the middle cerebral artery?

Answer 6

internal capsule. Important, since lesions can cause loss of sensation and paralysis to contralateral body. also the ventral part of the parietal and frontal cortex, which can cause problems with speech, somatic sensation and movement from upper body and head.

Question 7

What artery supplies Broca’s area?

Answer 7

middle cerebral artery

Question 8

What artery supplies the internal capsule?

Answer 8

middle cerebral artery

Question 9

What important structures are supplied by the posterior cerebral artery?

Answer 9

occipital cortex, including vision center. occlusions can result in blindness

Question 10

What areas are supplied by the central arteries?

Answer 10

hypothalamus, subthalamus, most of thalamus, and rostral basal ganglia.

Question 11

From where do the central arteries arise?

Answer 11

from the anterior and posterior communicating arteries

Question 12

What are the landmarks for the anterior choroidal arteries?

Answer 12

junction of the middle cerebral artery and the posterior communicating artery

Question 13

What structures are supplied by the choroidal arteries?

Answer 13

choroid plexus, hippocampus, hippocampus, much of the globus pallidus, and the amygdala and internal capsule

Question 14

What are the veins that join at the confluens of sinuses?

Answer 14

superior saggital sinus
transverse sinus
occipital sinus

Question 15

trace a drop of blood from the great vein of galen

Answer 15

drains to the straight sinuse (which also gets blood from the inferior saggital sinuses, then to transverse sinuses then to confluens of sinuses then to the internal jugular