Question

The hypophyseal fossa of the sella turcica,which surrounds the pituitary gland, is a part of the ________ bone.

Answer 1

The hypophyseal fossa of the sella turcica, surrounding the pituitary gland, is part of the sphenoid bone. This bone is critical in the skull's structure and forms the central skull's base and sides.

Step-by-step explanation:

The Hypophyseal Fossa of the Sella Turcica

The hypophyseal fossa of the sella turcica, which surrounds the pituitary gland, is a part of the sphenoid bone. This shallow depression serves as the housing for the pituitary (hypophyseal) gland, a critically important gland in endocrine function. The sphenoid bone is known as a "keystone" bone of the central skull because it connects with almost every other bone of the skull and forms much of the base of the central skull. It also plays a role in forming the sides of the skull.

The sella turcica is located in the midline of the middle cranial fossa and is named for its resemblance to a Turkish saddle. The greater wings of the sphenoid bone extend laterally from the sella turcica, contributing to the anterior floor of the middle cranial fossa. Especially relevant in medical contexts, any pituitary tumor that develops can press against fibers in the optic chiasm, leading to vision problems such as "tunnel vision."

Answer 2

Part of the sphenoid bone, the hypophyseal fossa of the sella turcica surrounds the pituitary gland.

The sphenoid bone is located in the middle of the skull facing the front, at the basilar part of the occipital bone and at the front of the temporal bone.