The infundibulum refers to a funnel-shaped structure. In biological contexts, this term describes different anatomical features depending on the specific area of the body.
Here are the primary meanings of infundibulum:
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In the Fallopian Tube: The infundibulum is the funnel-shaped, widened distal (outer) end of the fallopian tube. It lies close to the ovary and plays a crucial role in capturing the released ovum (egg) during ovulation. Its fringed, finger-like projections, called fimbriae, sweep the ovary surface to help direct the ovum into the fallopian tube.
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In the Brain (Hypothalamus): The infundibulum (also known as the pituitary stalk) is a stalk-like structure connecting the hypothalamus to the posterior pituitary gland. This connection allows for the transport of hormones from the hypothalamus to the posterior pituitary, where they are stored and released into the bloodstream.
Therefore, depending on the context (reproductive system vs. brain anatomy), "infundibulum" refers to different anatomical structures.
