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Homogeny :: Homogeny (n.) The correspondence of common descent; -- a term used to supersede homology by Lankester, who also used homoplasy to denote any superinduced correspondence of position and structure in parts embryonically distinct (other writers using the term homoplasmy). Thus, there is homogeny between the fore limb of a mammal and the wing of a bird; but the right and left ventricles of the heart in both are only in homoplasy with each other, these having arisen independently since the divergence

Hippocampus :: Hippocampus (n.) A name applied to either of two ridges of white matter in each lateral ventricle of the brain. The larger is called hippocampus major or simply hippocampus. The smaller, hippocampus minor, is called also ergot and calcar..

Choroid :: Choroid (a.) resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball..

Teretial :: Teretial (a.) Rounded; as, the teretial tracts in the floor of the fourth ventricle of the brain of some fishes..

Hydrocephalus :: Hydrocephalus (n.) An accumulation of liquid within the cavity of the cranium, especially within the ventricles of the brain; dropsy of the brain. It is due usually to tubercular meningitis. When it occurs in infancy, it often enlarges the head enormously..

Procoele :: Procoele (n.) A lateral cavity of the prosencephalon; a lateral ventricle of the brain.

Calcar :: Calcar (n.) A curved ridge in the floor of the leteral ventricle of the brain; the calcar avis, hippocampus minor, or ergot..

Iter :: Iter (n.) A passage; esp., the passage between the third and fourth ventricles in the brain; the aqueduct of Sylvius..

Interventricular :: Interventricular (a.) Between the ventricles; as, the interventricular partition of the heart..

Infundibulum :: Infundibulum (n.) A funnel-shaped or dilated organ or part; as, the infundibulum of the brain, a hollow, conical process, connecting the floor of the third ventricle with the pituitary body; the infundibula of the lungs, the enlarged terminations of the bronchial tubes..

Ventricular :: Ventricular (a.) Of or pertaining to a ventricle; bellied.

Medicommissure :: Medicommissure (n.) A large transverse commissure in the third ventricle of the brain; the middle or soft commissure.

Intraventricular :: Intraventricular (a.) Within or between ventricles.

Hemisystole :: Hemisystole (n.) Contraction of only one ventricle of the heart.

Thalamocoele :: Thalamocoele (n.) The cavity or ventricle of the thalamencephalon; the third ventricle.

Reptilia :: Reptilia (n. pl.) A class of air-breathing oviparous vertebrates, usually covered with scales or bony plates. The heart generally has two auricles and one ventricle. The development of the young is the same as that of birds..

Postcornu :: Postcornu (n.) The posterior horn of each lateral ventricle of the brain.

Ventricle :: Ventricle (n.) A cavity, or one of the cavities, of an organ, as of the larynx or the brain; specifically, the posterior chamber, or one of the two posterior chambers, of the heart, which receives the blood from the auricle and forces it out from the heart. See Heart..

Postcommissure :: Postcommissure (n.) A transverse commisure in the posterior part of the roof of the third ventricle of the brain; the posterior cerebral commisure.

Medicornu :: Medicornu (n.) The middle or inferior horn of each lateral ventricle of the brain.

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