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bulbus[bul´bus] (pl. bul´bi) (L.)
bulbus o´culi eyeball.
The eye proper without the appendages.
pl. bulbi [L.] bulb.
the swollen, first part of the aorta, between the atria; swollen because of the sinuses above each of the three cusps of the aortic valves.
the outflow tract of the embryonic heart between the primitive ventricle and the aorta.
the bulb of the dog's penis; the proximal portion which enlarges greatly during erection and is the part responsible for preventing withdrawal during ejaculation.
see hair bulb.
a well-organized fibroadipose mass in a muscular envelope into which the retrices (tail feathers of birds) are embedded. It occupies a trough-shaped socket bounded by the caudal vertebrae and the intrinsic tail muscles.