olecranon fossa(redirected from fossa olecrani)
a hollow on the dorsum of the distal end of the humerus, just above the trochlea, in which the olecranon process of the ulna rests when the elbow is extended.
the depression in the posterior surface of the humerus that receives the olecranon of the ulna when the forearm is extended. Compare coronoid fossa.
On the posterior surface of the lower end of the humerus, a depression proximal to the trochlea and between the medial and lateral epicondyles; it is analogous to the coronoid fossa on the opposite side of the humerus. During full extension of the forearm, the olecranon process of the ulna fits into the olecranon fossa of the humerus
See also: fossa
pl. fossae [L.] a trench or channel; a hollow or depressed area.
the nonarticular part of the acetabulum.
the depression in which the palatine tonsil is lodged in some species.
any of the depressions on the floor of the cranial cavity.
lateral cerebral fossa
see vallecula sylvii.
the cavity in which the glans clitoridis resides.
condylar fossa, condyloid fossa
either of depressions lateral to the occipital condyles.
a depression in the humerus for the coronoid process of the ulna. Called also radial fossa.
any one of the three hollows (rostral, middle and caudal) in the base of the cranium for the lobes of the brain.
the hollow in the cribriform plate of the ethmoid bones, for the olfactory bulb.
depression at the end of the stallion glans penis, housing the urethral process; it harbors smegma and potential pathogens.
a depression in the front of the vitreous body, lodging the lens.
hypophyseal fossa, hypophysial fossa
a depression in the sphenoid lodging the pituitary gland; called also pituitary fossa.
an irregularly shaped cavity medial or deep to the zygomatic arch.
the fossa between the cerebral peduncles.
a triangular depression between the crura cerebri.
a potential space between the pelvic diaphragm, the ischium and the skin.
lacrimal sac fossa
excavated from the lacrimal bone and housing the lacrimal sac.
the transverse groove on the dorsum of the bovine tongue between the torus and the tip.
a depression in the pars squamosa of the temporal bone at the base of the zygomatic process, in which the condyle of the mandible rests; called also glenoid fossa.
the right or left half of the nasal cavity.
see synovial fossa (below).
between the epicondylar crests at the distal end of the humerus; receives the anconeal process of the ulna.
fossa ovalis cordis
a fossa in the right atrium of the heart; the remains of the fetal foramen ovale.
a shallow depression on the surface of the mare's ovary. Called also ovulation fossa.
the hollow of the flank, bounded dorsally by the transverse processes of the lumbar vertebrae, cranially by the last rib and caudally by the muscles of the thigh.
see coronoid fossa (above).
floor of the fourth ventricle.
the depression between the condyles of the femur.
a depression cranial to the spine of the scapula.
depressed, cartilage-free islands in large articular cartilages; no function has been determined for them. Called also fossa nudatae.
an area on the side of the cranium bounded by the temporal line and the zygomatic arch, lodging the temporal muscle.
the deep fossa at the proximal end of the femur between the greater and lesser trochanters.