Lab 8 - Higher Motor Function

Blood Supply

Now that you are familiar with functions of the major structures within the core of the cerebrum, it isBlood Supply a good time to review the vascular supply of these areas.

The medial striate artery is a very small artery that branches off the anterior cerebral artery just rostral to the formation of the anterior communicating artery. Branches of the medial striate artery supply the rostromedial aspects of the caudatelenticular nucleus, and anterior limb of the internal capsule. Recall that the corpus striatum consists of the caudate and lenticular nuclei: hence the name striate artery.

The lateral striate arteries are derived from the middle cerebral arteryand supply much of the caudate, lenticular nucleus and internal capsule.

The anterior choroidal arteries are derived from the internal carotid arteries and supply the posterior limb of the internal capsulepart of the amygdalacore of the parahippocampal gyrus, and tail of the caudate as well as the choroid plexus of the temporal horn of the lateral ventricle.

The posterior communicating arteries also are derived from the internal carotid arteries and supplies small branches to the diencephalon.

The posterior choroidal arteries branch off from the posterior cerebral arteries. Recall that the posterior cerebral arteries are usually derived from the basilar artery. The posterior choroidal artery supplies the diencephalonand midbrain tectum as well as the choroid plexus of the lateral and third ventricles.