superior border of petrous part of temporal bone
21Medial pterygoid plate — Bone: Medial pterygoid plate Sphenoid bone. Anterior and inferior surfaces. (Medial pterygoid plate labeled at bottom left.) …
22Mastoid foramen — Bone: Mastoid foramen Left temporal bone. Inner surface. (Mastoid foramen labeled at bottom left.) …
23Optic canal — Bone: Optic foramen 1: Foramen ethmoidale 2: Canalis opticus 3: Fissura orbitalis superior 4: Fossa sacci lacrimalis 5: Sulcus infraorbitalis 6: Fissura orbitalis inferior 7: Foramen infraorbitale …
24Cochlear aqueduct — Bone: Aqueduct of cochlea Left temporal bone. Inferior surface. (Aquæductus cochleæ labeled at left, fifth from the top.) Latin a. cochleae Gray s …
25Chiasmatic groove — Bone: Chiasmatic groove Sphenoid bone. Upper surface. (Sulcus chiasmaticus labeled at center) …
26Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …
27Glossopharyngeal nerve — Nerve: Glossopharyngeal nerve Plan of upper portions of glossopharyngeal, vagus, and accessory nerves …
28Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… …
29Fissure — A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is distinctly abnormal. It is a painful… …
30groove — A narrow, elongate depression or furrow on any surface. SEE ALSO: sulcus. alveolobuccal g. the upper and lower half of the buccal vestibule on each side. SYN: alveolobuccal sulcus, gingivobuccal g., gingivobuccal sulcus. alveololabial g. 1. the… …
