The ____ is supplied with blood by means of the common carotid arteries and the vertebral arteries.
The right common carotid artery arises from the innominate artery and the left common carotid artery arises from the arch of the aorta. Right right and left vertebral arteries arise from the corresponding:
The right and left vertebral arteries extend upwards to the base of the brain where they unite to form the:
The basilar artery branches into the:
Right and Left Posterior Cerebral Arteries
The right and left common carotid arteries extend upwards along the trachea until they reach the upper border of the thyroid cartilage where they subdivide into the:
External and Internal Carotid Arteries
- Supply blood to the head and neck.
- Supply the brain and also the eyes and nose.
- External Carotid Arteries
- Internal Carotid Arteries
The first major branch of the internal carotid artery.
- Carries blood to the eye.
The first principal branch of the internal carotid artery is the opthalmic artery, the other branches go to the:
When the right and left internal carotid arteries reach the base of the brain, they divide into several branches. The first branches are the:
Posterior Communicating Arteries (Left and Right)
The posterior communicating arteries lead to the corresponding:
Posterior Cerebral Arteries
After giving off the first branch, the internal carotid artery subdivides into two parts:
Anterior Cerebral Artery and Middle Cerebral Artery
The right and left anterior cerebral arteries are connected by means of the:
Anterior Communicating Artery
The Circle of Willis is formed by the ___ ___ ___, which are branches of the internal carotid arteries.
Anterior Cerebral Arteries
From the cerebral arteries, the blood flows to all parts of the brain. From the brain, the blood flows into the:
From the cerebral veins, the blood flows into various cranial venous sinuses. The uppermost of these is the:
Superior Sagittal Sinus
The superior sagittal sinus connects with the:
The superior sagittal sinus connects with the straight sinus to form the paired:
Right and Left Transverse Sinuses
Leading into the straight sinus is the:
Inferior Sagittal Sinus
The paired transverse sinuses lead into the:
Right and Left Internal Jugular Veins
The right and left internal jugular veins join the right and left subclavian veins to form the:
Right and Left Innominate (Brachiocephalic) Veins
The right and left Innominate (Brachiocephalic) veins lead to the ___1___, which in turn leads into the __2__.