olecranon fossa

olecranon fossa,

the depression in the posterior surface of the humerus that receives the olecranon of the ulna when the forearm is extended. Compare coronoid fossa.

---

fossa

pl. fossae [L.] a trench or channel; a hollow or depressed area.

---

acetabular fossa

the nonarticular part of the acetabulum.

amygdaloid fossa

the depression in which the palatine tonsil is lodged in some species.

cerebral fossa

any of the depressions on the floor of the cranial cavity.

lateral cerebral fossa

see vallecula sylvii.

fossa clitoridis

the cavity in which the glans clitoridis resides.

condylar fossa, condyloid fossa

either of depressions lateral to the occipital condyles.

coronoid fossa

a depression in the humerus for the coronoid process of the ulna. Called also radial fossa.

cranial fossa

any one of the three hollows (rostral, middle and caudal) in the base of the cranium for the lobes of the brain.

ethmoid fossa

the hollow in the cribriform plate of the ethmoid bones, for the olfactory bulb.

fossa glandis

depression at the end of the stallion glans penis, housing the urethral process; it harbors smegma and potential pathogens.

glenoid fossa

mandibular fossa.

hyaloid fossa

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.

infratemporal fossa

an irregularly shaped cavity medial or deep to the zygomatic arch.

intercrural fossa

the fossa between the cerebral peduncles.

interpeduncular fossa

a triangular depression between the crura cerebri.

ischiorectal fossa

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.

lingual fossa

the transverse groove on the dorsum of the bovine tongue between the torus and the tip.

mandibular fossa

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.

nasal fossa

the right or left half of the nasal cavity.

fossa nudatae

see synovial fossa (below).

olecranon fossa

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.

ovarian fossa

a shallow depression on the surface of the mare's ovary. Called also ovulation fossa.

paralumbar 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.

pituitary fossa

hypophyseal fossa.

radial fossa

see coronoid fossa (above).

rhomboidal fossa

floor of the fourth ventricle.

supracondylar fossa

the depression between the condyles of the femur.

supraspinous fossa

a depression cranial to the spine of the scapula.

synovial fossa

depressed, cartilage-free islands in large articular cartilages; no function has been determined for them. Called also fossa nudatae.

temporal fossa

an area on the side of the cranium bounded by the temporal line and the zygomatic arch, lodging the temporal muscle.

trochanteric fossa

the deep fossa at the proximal end of the femur between the greater and lesser trochanters.