Allergies occur as your immune system identifies and reacts to a foreign substance causing sinusitis or inflammation in your sinuses. With allergens such as pet dander, dust or pollen, an allergic reaction can cause allergic rhinitis, which is...
ostium /os·ti·um/ (os´te-um) pl. os´tia [L.] an opening or orifice.os´tial. ostium abdomina´le tu´bae uteri´nae the funnel-shaped opening where the uterine ...
Ostium (plural ostia) may refer to: Anatomy Ostium of Fallopian tube Ostium primum or foramen ovale (ostium secundum) of the developing heart Ostium maxillare of the ...
ostium n. , pl. , -tia . A small opening or orifice, as in a body organ or passage. Any of the small openings or pores in a sponge
os·ti·um (s t-m) n. pl. os·ti·a (-t-) 1. A small opening or orifice, as in a body organ or passage. 2. Any of the small openings or pores in a sponge.
noun, plural os·ti·a . 1. Anatomy, Zoology . a small opening or orifice, as at the end of the oviduct. 2. Zoology . one of the tiny holes in the body of a sponge ...
In the developing heart, the atria initially communicate with each other by an opening between the free edge of the septum primum and the AV cushions, known as the ...
...arteries originate from the right and left aortic sinuses (the sinuses of Valsalva), which are bulges at the origin of the ascending aorta immediately beyond, or ...
Definition of OSTIUM: a mouthlike opening in a bodily part (as a fallopian tube or a blood vessel) Origin of OSTIUM. New Latin, from Latin, door, mouth of a river ...
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Anat. an opening or orifice
