What is the sella turcica in sphenoid bone?

The sella turcica (Latin for Turkish seat) is a saddle-shaped depression in the body of the sphenoid bone of the human skull and of the skulls of other hominids including chimpanzees, orangutans and gorillas. It serves as a cephalometric landmark.

The sphenoid bone is wedged between several other bones in the front of the cranium. It consists of a central part and two wing-like structures that extend sideways toward each side of the skull. This bone helps form the base of the cranium, the sides of the skull, and the floors and sides of the orbits (eye sockets).

Also Know, 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. The sella is covered by a dural reflection (i.e., diaphragma sellae) above which lies the suprasellar cistern.

Similarly one may ask, what kind of bone is the sphenoid?

Sphenoid bone, upper surface. The sphenoid bone is an unpaired bone of the neurocranium. It is situated in the middle of the skull towards the front, in front of the basilar part of the occipital bone. The sphenoid bone is one of the seven bones that articulate to form the orbit.

What passes through the sphenoid bone?

The blood vessels pass through the foramina present in the wings of the sphenoid bone. The ophthalmic artery passes through the optic canal to enter the orbit. The ophthalmic veins pass out of the orbit through the superior orbital fissure.

Why does my sphenoid bone hurt?

The main symptom of sinusitis is a throbbing pain and pressure around the eyeball, which is made worse by bending forwards. Although the sphenoid sinuses are less frequently affected, infection in this area can cause earache, neck pain, or an ache behind the eyes, at the top of the head, or in the temples.

What muscles attach to the sphenoid bone?

On the base of the sphenoid bone, several muscles attach to it’s legs, the medial and lateral pterygoid processes. As the name suggests, the pterygoid muscles, important for chewing and mastication, attach here.

What is the most fragile bone in the human body?

lacrimal bones

What is the sphenoid process?

Anatomical terms of bone The sphenoidal process of the palatine bone is a thin, compressed plate, much smaller than the orbital, and directed upward and medialward. It presents three surfaces and two borders.

What are the main features of the sphenoid bone?

The sphenoid bone has a central body, paired greater and lesser wings that extend laterally from the body of the sphenoid, and two pterygoid processes descending from the junction of the body and greater wings.

Are there two sphenoid bones?

The sphenoid is an unpaired bone. It sits anteriorly in the cranium, and contributes to the middle cranial fossa, the lateral wall of the skull, and the floor and sides of both orbits. It has articulations with twelve other bones: Unpaired bones – Occipital, vomer, ethmoid and frontal bones.

What is the function of the sphenoid sinus?

Sphenoid sinus. Sinuses are air-filled sacs (empty spaces) on either side of the nasal cavity that filter and clean the air breathed through the nose and lighten the bones of the skull. There are four paired sinuses in the head.

Where can you palpate the sphenoid bone?

Place your fingers approximately one and a half finger widths superior to the zygomatic arch and palpate the fibers from anterior to posterior. Tenderness may be present in the anterior, middle, or posterior fibers, or a combination of all three.

Is the sphenoid bone a facial bone?

The sphenoid bone is one of the most complex in the body due to its interactions with numerous facial bones, ligaments, and muscles. The body that forms the middle of the sphenoid bone articulates with the ethmoid and occipital bone and forms a key part of the nasal cavity; it also contains the sphenoidal sinuses.

Is there a bone in your nose?

Nasal Bone. Each human has two nasal bones located in the upper-middle area of the face, between the maxillary (upper jaw) bones’ frontal processes. These sit midline to each other to form the bridge of the nose. Nasal bones are normally small and oblong, but can differ in size and shape in different people.

Are Ribs long bones?

Long bones: Long bones have a tubular shaft and articular surface at each end. The major bones of the arms (humerus, radius, and ulna) and the legs (the femur, tibia, and fibula) are all long bones. The flat bones include the scapula (wingbone), the ribs, and the sternum (breastbone).

What kind of bone is the clavicle?

The clavicle is a sigmoid-shaped long bone with a convex surface along its medial end when observed from cephalad position. It serves as a connection between the axial and appendicular skeleton in conjunction with the scapula, and each of these structures forms the pectoral girdle.

Where is the pituitary gland located in the sphenoid bone?

Morphology. The pituitary gland is located in a small depression in the sphenoid bone, the sella turcica, just beneath the hypothalamus, and is connected to the hypothalamus by a thin stalk called the infundibulum.