pertaining to or caused by food, or nutritive material. alimentary canal. all the organs making up the route taken by food as it passes through the body from mouth to anus; it comprises the esophagus, stomach, and small and large intestines. Called also digestive tract.he terminal portion of the alimentary canal, from the rectum to the anus. atrioventricular canal. the common canal connecting the primitive atrium and ventricle; it sometimes persists as a congenital anomaly. birth canal. the canal through which the fetus passes in birth.
Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), in contrast to spinal nerves (which emerge from segments of the spinal cord). Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck. Spinal nerves emerge sequentially from the spinal cord with the spinal nerve closest to the head (C1) emerging in the space above the first cervical vertebra. The cranial nerves, however, emerge from the central nervous system above this level. Each cranial nerve is paired and is present on both sides.
The bones of the head collectively. The neurocranium is the part of cranium that forms the bony brain case containing the brain, excluding the bones of the face (viscerocranium). Synonym(s): skull. [Mediev. L. fr. G. kranion ]. (skul) the cranium; the bony framework of the head, composed of the cranial and facial bones.