What is the dorsum sellae?
The dorsum sellae is the square shaped process of the sphenoid bone. It ascends superiorly from the posterior part of the sphenoid body to form the posterior wall of the sella turcica.
Is the sella turcica the same as the pituitary fossa?
The sella turcica is located in the sphenoid bone behind the chiasmatic groove and the tuberculum sellae. It belongs to the middle cranial fossa. The sella turcica’s most inferior portion is known as the hypophyseal fossa (the “seat of the saddle”), and contains the pituitary gland (hypophysis).
What is pituitary and sella turcica?
The pituitary gland sits in the sella turcica, a bony box at the base of the brain, which protects it. On magnetic resonance imaging (MRI) scans of a normal brain, the pituitary gland would normally almost fill the sella turcica.
What is the function of the diaphragma sellae?
The diaphragma sellae covers the pituitary gland and is the roof of the sella turcica. It separates the pituitary gland from the intradural space and serves as an important surgical landmark.
Are the tubercles of the superior angle of the dorsum sellae?
The dorsum sellae is part of the sphenoid bone in the skull. Together with the basilar part of the occipital bone it forms the clivus….
|Anatomical terms of bone|
What attaches to the dorsum Sellae?
Gross anatomy The dorsum sellae forms the posterior wall of the sella turcica, which houses the pituitary gland. Laterally, it articulates with the petrous apex of the petrous part of the temporal bone. Posteriorly, it articulates with the basilar part of the occipital bone, and jointly forms the clivus.
What is above sella turcica?
The sella is covered by a dural reflection (i.e., diaphragma sellae) above which lies the suprasellar cistern. The suprasellar cistern contains the supraclinoid internal carotid arteries, pituitary stalk, and the optic nerves, chiasm, and tracts.
What does the sella turcica contain?
The sella turcica is a midline depression in the sphenoid bone which contains the pituitary gland and distal portion of the pituitary stalk.
Can empty sella syndrome be reversed?
Conclusions: The case here reported demonstrates that an empty sella can be a reversible condition in rare cases. Its disappearance can be due to the reduction in intracranial pressure caused by the lumbar puncture itself.
What is Diaphragma?
The diaphragm is a muscle that helps you breathe. It sits under your lungs and separates your chest cavity from your abdomen. Many conditions, injuries and diseases can affect how the diaphragm works, causing symptoms such as trouble breathing and chest pain.
Where would you find the diaphragma sellae what passes through it?
The diaphragma sellae or sellar diaphragm is a flat piece of dura mater with a circular hole allowing the vertical passage of the pituitary stalk. It retains the pituitary gland beneath it in the fossa hypophyseos as it almost completely roofs the fossa hypophyseos of the sella turcica, a part of the sphenoid bone.
Is the sella turcica the same as the pituitary gland?
The terms sella turcica and pituitary fossa are often used synonymously, but in fact the pituitary fossa has 4 parts: In addition to the pituitary gland, the pituitary fossa contains the pituitary vessels, the anterior and posterior intercavernous sinuses, and cerebrospinal fluid.
What is the function of the dorsum sellae?
The dorsum sellae is the square shaped process of the sphenoid bone. It ascends superiorly from the posterior part of the sphenoid body to form the posterior wall of the sella turcica. The dorsum sellae forms the posterior wall of the sella turcica, which houses the pituitary gland.
What is sella turcica malformation?
This is a rare disorder in which an enlarged or malformed sella turcica is partially filled with CSF and contains a tiny pituitary gland (partially empty sella) or the pituitary is not visualized (completely empty sella).
What is an empty sella turcica?
The pituitary sits in a saddle-like compartment in the skull called the sella turcica. In Latin, it means Turkish seat. When the pituitary gland shrinks or becomes flattened, it cannot be seen on an MRI scan. This makes the area of the pituitary gland look like an “empty sella.”. But the sella is not actually empty.