The sphenoid bone
Sphenoid bone
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 temporal bone and the basilar part of the occipital bone. 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.
Why is the sphenoid bone considered the keystone of the cranium quizlet?
Keystone to the cranium because it articulates with all other cranial bones. Bat-shaped portion sof the sphenoid anterior to the sella turcia. Portion off the sphenoid seen exteriorly anterior to the temporal and forming a part of the eye orbits.
What is the sphenoid bone also called?
An unpaired bone located in the cranium (or skull), the sphenoid bone, also known as the “wasp bone,” is located in the middle and toward the front of the skull, just in front of the occipital bone.
What are the keystone bones of the cranium and face?
The maxilla is the keystone of facial bones.
Why is sphenoid bone unpaired?
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....Sphenoid boneTA2584FMA52736Anatomical terms of bone7 more rows
How do you remember sphenoid bones?
1:407:07Skull Bones Mnemonic (Cranial and Facial Bones) - YouTubeYouTubeStart of suggested clipEnd of suggested clipWhich you can see when you look at the inferior view of the skull the sphenoid. Also looks like aMoreWhich you can see when you look at the inferior view of the skull the sphenoid. Also looks like a specter which is another word for ghost. So the sphenoid is the specter that spans the cranium.
What is keystone bone?
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 because it is in contact with all of the other cranial bones.
What is the keystone facial bone?
Since it anchors all facial bones except the mandible, the maxilla is known as the "keystone bone" of the face. It is made up of two bones (maxillae) that are fused together in the middle. Seven other facial bones, as well as two cranial bones, form joints in each maxilla.
Why is the maxilla called the keystone bone?
They are considered the keystone bones of the face because they articulate with all other facial bones except the mandible (lower jawbone). The maxillae form part of the floors of the orbits, part of the lateral walls and floor of the nasal cavity, and most of the hard palate.