Carotid Artery

The artieries which carry blood up through the neck, eventually supplying the brain with its major blood supply. Carotid artery: Either of the two key arteries located in the front of the neck, through which blood from the heart goes to the brain. The right and left...

Catheter

A tubular instrument to allow passage of fluid from or into a body cavity. Tubular device inserted into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids. Examples of use; heart or urinary catheterization. Catheterization is also...

Cavernous Sinus

Area adjacent to the sphenoid sinus containing several vital nerves and blood vessels. A large channel of venous blood creating a “sinus” cavity bordered by the sphenoid bone and the temporal bone of the skull. The cavernous sinus is an important structure...

Cell

The basic living unit of body tissue. It contains a nucleus surrounded by cytoplasm and is enclosed by a membrane. Minute protoplasmic masses that make up organized tissue, consisting of a nucleus which is surrounded by protoplasm which contains the various organelles...

Central Nervous System (CNS)

Pertaining to the brain, cranial nerves and spinal cord. It does not include muscles or peripheral nerves. The central nervous system (CNS) is made up of the spinal cord and brain. The brain receives nerve impulses from the spinal cord and cranial nerves. The spinal...