All of the following blood vessels bring blood to the brain except:

A. Brachiocephalic artery: The brachiocephalic artery (trunk) arises from the aortic arch and gives rise to the right common carotid and right subclavian arteries. Through these branches, it ultimately contributes arterial blood flow to the brain, particularly via the right internal carotid and vertebral arteries.

B. Internal carotid artery: The internal carotid artery is a major direct supplier of oxygenated blood to the brain. It enters the cranial cavity and contributes to the Circle of Willis, supplying the anterior and middle cerebral territories.

C. External jugular vein: The external jugular vein is a venous vessel that drains superficial structures of the head and neck. It carries blood away from these regions and does not deliver arterial blood to the brain, making it the exception.

D. Vertebral artery: The vertebral arteries arise from the subclavian arteries and ascend through the transverse foramina of the cervical vertebrae. They enter the cranial cavity and merge to form the basilar artery, supplying the posterior portion of the brain.

E. Common carotid artery: The common carotid arteries bifurcate into the internal and external carotid arteries. The internal carotid branch directly supplies the brain, making the common carotid an essential upstream source of cerebral arterial blood flow.

The pathway of blood from the heart to the stomach involves a sequence of arteries that branch from the aorta to reach the stomach. Blood is first pumped from the left ventricle into the ascending aorta, then into the aortic arch, and down through the descending thoracic aorta into the abdominal aorta. From the abdominal aorta, blood flows into the celiac trunk, a major branch that supplies the upper abdominal organs. Finally, the left gastric artery, a branch of the celiac trunk, delivers oxygenated blood directly to the stomach, ensuring its tissues receive nutrients and oxygen for proper function.