Where is the hyoid bone and what is its function?
Inferior to the mandible in the anterior neck. Provides an attachment point for the muscles of the floor of the mouth and tongue.
What is so unusual about the hyoid bone?
It is not part of the skull and it does not articulate with another bone
Where are the auditory ossicles?
Embedded in the petrous portion of the temporal bone. (Middle ear cavity)
Name the 8 cranial bones
Parietal bones (2)
Temporal Bone (2)
Name the 14 Facial Bones
Pallatine Bones (2)
Zygomatic bones (2)
Lacrimal Bones (2)
Nasal Bones (2)
Inferior Nasal Concha (2)
Name the 7 bones that contribute to the Orbital Cavity
Name the bones and their processes which form the zygomatic arch
Zygomatic process of the temporal bone and the zygomatic process
Name the bones and their processes which form the hard palate
Maxilla (Palatine Process)
Palaine bone (horizontal plate)
Name the 3 parts of the nasal septum
Name and locate paranasal sinuses.
Frontal, sphenoid, ethmoid, and paired maxillary bones
Flank the nasal cavity laterally and extend from the orbit to the roots of the upper teeth.
Why is the sphenoid bone considered the keystone of the cranium?
Because it forms the central wedge that articulates with all other cranial bones
Why are the maxillae considered the keystone of the facial bones?
They form the upper jaw and parts of the hard palate, orbits and nasal cavity walls.
What is TMJ syndrome?
The dislocation of the temperomandibular joint. It is associated with pain in the ear, ace, and tenderness of the jaw muscles
In what way does a throat infection involve the mastoid and make this condition dangerous?
Because the brain is separated from the mastoid by only a thin bony plate, the infection could spread to the brain
With what do the occipital condyles articulate?
1st vertebrae of the spinal column and permits a nodding "yes" motion
What ligament attaches to the external occipital crest?
What is the function of the crista galli?
Attachment site for the falx cerebri; a dural membrane fold of the dura mater
What is the function of the sella turcica
Hyposhyseal Fossa Portion is the seat of the pituitary gland
What is the function of the styloid process of the temporal bone?
The attachment site for several neck muscles and for a ligament to the hyoid bone
What is the function of the coronoid process of the mandible?
Insertion points for the temporalis muscle
Skull bones and questions