noun, plural: infundibula
Any of the various funnel-shaped bodily cavities, openings, or organs.
A central cavity in the Ctenophora, into which the gastric sac leads; the siphon of Cephalopoda.
(anatomy) Examples of infundibular structures:
- The infundibulum (or the stalk) of the pituitary gland
- The infundibulum (or the calyx) of a kidney
- The infundibulum (or the ovarian opening) of a fallopian tube
- The infundibulum (or the alveolar sacs from which the alveoli open) of the lungs
- The infundibulum (or the outflow portion of the right ventricle) of the heart
- The infundibulum (or the pituitary stalk) of the embryonic brain
Word origin: Latin, a funnel, from infundere to pour in or into.
Related forms: infundibular (adjective).
Related terms: enlarged pituitary infundibulum, infundibulum of uterine tube, infundibulum tubae uterinae, choanotaenia infundibulum.