What shape is the infundibulum?

What shape is the infundibulum?

• A. Tubular
• B. Spherical
• C. Funnel-shaped
• D. Conical

Answer: (C)

Infundibulum means funnel. In anatomy this structure is described as funnel-shaped because it widens toward the region it comes from and narrows as it leads to the next area, forming a passage that channels contents—such as neurosecretory fibers from the hypothalamus to the posterior pituitary. The wording reflects its actual morphology, unlike tubular (a simple tube), spherical (ball-like), or conical (a straight cone) descriptions.

Infundibulum means funnel. In anatomy this structure is described as funnel-shaped because it widens toward the region it comes from and narrows as it leads to the next area, forming a passage that channels contents—such as neurosecretory fibers from the hypothalamus to the posterior pituitary. The wording reflects its actual morphology, unlike tubular (a simple tube), spherical (ball-like), or conical (a straight cone) descriptions.