Internal carotid artery of the posterior communicating artery to the bifurcation of the internal carotid artery. The named branches of the communicating segment are: The internal carotid then divides to form the anterior cerebral artery and middle cerebral artery. The internal carotid artery can receive blood flow via an important collateral pathway supplying the brain, the cerebral arterial circle, which is more commonly known as the Circle of Willis. The following are the branches of the internal carotid artery, listed by segment: The sympathetic trunk forms a plexus of nerves around the artery known as the carotid plexus. The internal carotid nerve arises
The Description of the Human Body soul. A sick or injured body does not do what we want or moves in ways we do not want. He believed the death of the body stopped it from being fit to bring about movement. This did not necessarily happen because the soul left the body. René Descartes believed the body could exist through mechanical means alone. This included digestion, blood circulation, muscle movement and some brain function. He felt we all know what the human body is like because animals have similar bodies and we have all seen them opened up. He saw the body as a machine.