What is sphenoid bone in anatomy?
What is sphenoid bone in anatomy?
The sphenoid is just one of the twenty-two bones that form the skull and essentially helps to connect the neurocranium to the facial skeleton. It is a single bone in the midline of the cranial cavity situated posterior to the frontal bone but anterior to the occipital.
What attaches to the sphenoid bone?
On the base of the sphenoid bone, several muscles attach to it’s legs, the medial and lateral pterygoid processes. Muscles of the soft palate, such as tensor veli palatini and levator veli palatini, also attach to the sphenoid bone.
What nerves go through the sphenoid bone?
The oculomotor, trochlear, and abducens nerves; the first division of the trigeminal nerve; and the optic vein pass through the superior orbital fissure. The borders of the superior orbital fissure are the ala minor and major, and medially the body of the sphenoid bone.
What bones does the sphenoid bone articulate with?
The articulations of the sphenoid are with the frontal, parietal, ethmoid, zygomatic, temporal, occipital, palatine, and vomer bones.
What landmark is not part of the sphenoid bone?
Identify the landmark that is not part of the sphenoid bone. The olfactory foramina are found in the cribriform plate of the ethmoid bone, not the sphenoid bone.
Which part of the sphenoid bone houses the pituitary gland?
sella turcica
a median portion, known as the body of sphenoid bone, containing the sella turcica, which houses the pituitary gland as well as the paired paranasal sinuses, the sphenoidal sinuses. two greater wings on the lateral side of the body and two lesser wings from the anterior side.
Can sphenoid bone move?
The movement between the sphenoid and the occiput has long been considered a primary focus in cranial therapeutics. Sutherland and later presented in books by Magoun and Upledger, the following movements occur between the sphenoid and occiput near or at the sphenobasilar junction: Flexion/Extension.
What is the bat shaped bone called?
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 lies deep pterion?
The pterion is known as ‘the danger area’ on the skull for head injuries. This is because the bone is thin at this site and is grooved by vessels on its internal surface (or may even lie in a bony tunnel here). It is the anterior branch of the middle meningeal artery (and vein) that lies deep to the pterion.
What is pterion anatomy?
The pterion is the H-shaped formation of sutures on the side of the calvarium representing the junction of four skull bones: the greater wing of the sphenoid bone. squamous portion of the temporal bone. frontal bone. parietal bone.