What is the bat shaped bone on the floor of the cranium?
The sphenoid bone is one of the seven bones that articulate to form the orbit. Its shape somewhat resembles that of a butterfly or bat with its wings extended.
What bone forms the anterior cranium?
22 Cards in this Set
| bone forming anterior cranium | frontal bone |
|---|---|
| contains a saddle that houses the pituitary gland | sphenoid |
| allows tear ducts to pass | lacrimal |
| forms most of hard palate | maxilla |
| superior and medial nasal conchae are part of this bone | ethnoid |
What bone is the site of sella turcica?
Introduction: The sphenoid bone has a superior depression called the sella turcica, Latin for “Turkish saddle,” where the pituitary gland is found.
What bone is most posterior part of cranium?
The occipital bone
The occipital bone is the most posterior aspect of the skull. There are three cranial fossae with various structural landmarks. The anterior cranial fossa forms from the frontal bone, the sphenoid bone, and the ethmoid bone. The middle cranial fossa forms from the sphenoid bone and two temporal bones.
What is the wedge shaped bone at the base of the skull?
Sphenoid bone
A prominent, irregular, wedge-shaped bone at the base of the skull. The sphenoid bone has been called the “keystone” of the cranial floor since it is in contact with all of the other cranial bones.
What is the cranial floor?
The base of skull, also known as the cranial base or the cranial floor, is the most inferior area of the skull. It is composed of the endocranium and the lower parts of the skull roof.
What are the parts of the sella turcica?
The sella turcica has three major components:
- The tuberculum sella forms the anterior boundary of the sella.
- The pituitary fossa (hypophysial fossa) is the bony depression that houses the pituitary gland.
- The dorsum sellae forms the posterior wall of the sella.
Where is base of skull?
The skull base is the floor, or base, of the skull located behind the eyes and nose. It is composed of five bones – the frontal, ethmoid, sphenoid, temporal and occipital – that provide support to the bottom of the brain.
What is sinus sphenoid bone?
(SFEE-noyd SY-nus) A type of paranasal sinus (a hollow space in the bones around the nose). There are two large sphenoid sinuses in the sphenoid bone, which is behind the nose between the eyes. The sphenoid sinuses are lined with cells that make mucus to keep the nose from drying out.
What type of bone is the sphenoid bone quizlet?
a compound bone that forms the base of the cranium, behind the eye and below the front part of the brain. It has two pairs of broad lateral “wings” and a number of other projections, and contains two air-filled sinuses.