Dictionary

All Word
osseous labyrinth Noun cavity in the petrous part of the temporal bone that contains the membranous labyrinth
organ of Corti Noun the hearing organ of the inner ear
ophthalmic artery Noun a branch of the internal carotid artery that supplies the eye and neighboring structures
ovarian artery Noun the artery that branches from the aorta and supplies blood to the ovaries
oesophageal veins Noun small veins from the esophagus emptying into the brachiocephalic vein or the azygos veins
ovarian vein Noun one of the veins that drain the ovaries
oblique vein of the left atrium Noun a tributary of the coronary sinus
obturator vein Noun a vein formed by the union of tributaries that drain the hip joints and thigh muscles
occipital vein Noun a vein that drains the occipital region
ophthalmic vein Noun either of two veins that serve the eye
oxytocin Noun hormone secreted by the posterior pituitary gland (trade name Pitocin)
omental bursa Noun an isolated part of the peritoneal cavity that is dorsal to the stomach
omentum Noun a fold of peritoneum supporting the viscera
operator gene Noun a gene that activates the production of messenger RNA by adjacent structural genes
operon Noun a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene
oncogene Noun a gene that disposes normal cells to change into cancerous tumor cells
osteophyte Noun small abnormal bony outgrowth
organelle Noun a specialized part of a cell
optic disc Noun the point where the optic nerve enters the retina
osmoreceptor Noun sensory end organ that responds to changes in osmotic pressure
optic disk Noun the point where the optic nerve enters the retina
osteoblast Noun a cell from which bone develops
olfactory brain Noun a center in the cerebral hemispheres that governs the sense of smell in lower animals
olfactory nerve Noun a collective term for numerous olfactory filaments in the nasal mucosa
osteoclast Noun cell that functions in the breakdown and resorption of bone tissue
olfactory bulb Noun one of two enlargements at the terminus of the olfactory nerve at the base of the brain just above the nasal cavities
osteocyte Noun mature bone cell
optic nerve Noun the cranial nerve that serves the retina
optic tract Noun the cranial nerve that serves the retina
oculomotor Noun supplies extrinsic muscles of the eye
oculomotor nerve Noun supplies extrinsic muscles of the eye
ovum Noun the female reproductive cell
oligodendroglia Noun tissue consisting of glial cells with sheetlike processes that form the myelin sheath of nerve fibers
oligodendria Noun tissue consisting of glial cells with sheetlike processes that form the myelin sheath of nerve fibers
ootid Noun mature ovum after penetration by sperm but before the formation of a zygote
oligodendrocyte Noun a cell of the oligodendroglia
ovule Noun a small or immature ovum
ovule Noun a small body that contains the female germ cell of a plant
oocyte Noun a female gametocyte that develops into an ovum after two meiotic divisions
outgrowth Noun a natural prolongation or projection from a part of an organism either animal or plant
outgrowth Noun the gradual beginning or coming forth
outgrowth Noun a natural consequence of development
occipital gyrus Noun any of the convolutions of the outer surface of the occipital lobe of the cerebrum
occipital lobe Noun that part of the cerebral cortex in either hemisphere of the brain lying in the back of the head
occipital cortex Noun that part of the cerebral cortex in either hemisphere of the brain lying in the back of the head
occiput Noun back part of the head or skull
os frontale Noun the large cranial bone forming the front part of the cranium: includes the upper part of the orbits
occipital bone Noun a saucer-shaped membrane bone that forms the back of the skull
occipital protuberance Noun prominence on the outer surface of the occipital bone
orchis Noun one of the two male reproductive glands that produce spermatozoa and secrete androgens