infundibulum

infundibulum /in·fun·dib·u·lum/ (-dib´u-lum) pl. infundib´ula   [L.]

1. a funnel-shaped structure.

2. conus arteriosus.

3. i. of neurohypophysis.infundib´ular

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ethmoidal infundibulum 

1. a passage connecting the nasal cavity with anterior ethmoidal cells and frontal sinus.

2. a sinuous passage connecting the middle nasal meatus with the anterior ethmoidal cells and often with the frontal sinus.

infundibulum of hypothalamus , infundibulum of neurohypophysis a hollow, funnel-shaped mass in front of the tuber cinereum, extending to the neurohypophysis.

infundibulum of uterine tube  the distal, funnel-shaped portion of the uterine tube.

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in·fun·dib·u·lum (nfn-dby-lm)

n. pl. in·fun·dib·u·la (-l)

1. A funnel or funnel-shaped structure or passage.

2. The infundibulum of the fallopian tube.

3. The expanding portion of a calix as it opens into the pelvis of the kidney.

4. See conus arteriosus.

5. A termination of a bronchiole in the alveolus.

6. Termination of the cochlear canal beneath the cupola.

7. The funnel-shaped, unpaired prominence of the base of the hypothalamus behind the optic chiasm, continuous below with the stalk of the pituitary gland.

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infun·dibu·lar (-lr), infun·dibu·late (-lt, -lt) adj.

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infundibulum

pl. infundibula [L.]

1. any funnel-shaped passage.

2. conus arteriosus of the heart.

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cardiac infundibulum

conus arteriosus.

hypothalamic infundibulum

a hollow, funnel-shaped mass in front of the tuber cinereum, extending to the posterior lobe of the pituitary gland.

oviduct infundibulum

cranial end of the avian oviduct; captures the oocyte released from the ovary and, during a 15 minute sojourn, invests it with its chalaziferous layer and the thin layer of albumen around the yolk.

tooth infundibulum

an invagination of the enamel from the wearing service of a tooth, as found in ruminant cheek teeth and the incisive and upper grinder teeth of horses.

infundibulum of uterine tube

the distal, funnel-shaped portion of the uterine tube. In birds the left uterine tube is the functional one and has a large thin-walled infundibulum.