The hearing and equilibrium system of the body. It consists of three parts

The anterior portion of the head that includes the skin, muscles, and structures of the forehead, eyes, nose, mouth, cheeks, and jaw.

The anatomical frontal portion of the mandible, also known as the mentum, that contains the line of fusion of the two separate halves of the mandible (symphysis menti). This line of fusion divides inferiorly to enclose a triangular area called the mental protuberance. On each side, inferior to the second premolar tooth, is the mental foramen for the passage of blood vessels and a nerve.

Curved rows of HAIR located on the upper edges of the eye sockets.

The hairs which project from the edges of the EYELIDS.

The part of the face above the eyes.

The oval-shaped oral cavity located at the apex of the digestive tract and consisting of two parts

Either of the two fleshy, full-blooded margins of the mouth.

A specialized structure that serves as an organ of the sense of smell as well as part of the respiratory system; the term includes both the external nose and the nasal cavity.

The region of the face on either side, around the PAROTID GLAND.

The outer covering of the calvaria. It is composed of several layers

The inferior region of the skull consisting of an internal (cerebral), and an external (basilar) surface.

The infratentorial compartment that contains the CEREBELLUM and BRAIN STEM. It is formed by the posterior third of the superior surface of the body of the sphenoid (SPHENOID BONE), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE, and the posterior inferior angle of the PARIETAL BONE.

The compartment containing the inferior part and anterior extremities of the frontal lobes (FRONTAL LOBE) of the cerebral hemispheres. It is formed mainly by orbital parts of the FRONTAL BONE and the lesser wings of the SPHENOID BONE.

The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones.