College Anatomy & Physiology: Chapter 7 - Bones of the Skull
What are the functions of the facial bones?
-Framework of the face -Contain cavities for special sense organs -Provide openings for air and food passage -Secure teeth -Anchor facial muscle (Communication)
What are the bones of the cranium?
-Frontal -Parietal -Occipital -Temporal -Sphenoid -Ethmoid
What bones roof the eye orbits?
-Frontal -Zygomatic -Maxilla -Sphenoid -Palatine -Lacrimal -Ethmoid
What does the axial skeleton include?
-Skull -Hyoid Bone -Vertebral Column -Thoracic Cage
How many bones are there in the hyoid bone?
1
How many bones are there in the mandible?
1
What do the temporal bones have?
Ear canals
What are the ear canals called?
External Auditory Meatus
What does the occipital bone contain specially for the spinal cord?
Foramen Magnum
What bone does the parietal bone fuse with anteriorly to form the coronal suture?
Frontal bone
What bone fuses at the frontal suture in the fetus?
Frontal bone
Where are the temporal bones?
Inferolateral sides of the braincase
What is the axial skeleton?
It's the bony and cartilaginous parts of the skeleton that support and/ or protect the neck, head, and trunk.
What does the occipital bone form when it's fused with the parietal bone?
Lambdoidal Suture
What does the parietal bone form when it's fused posteriorly with the occipital bone?
Lambdoidal Suture
Where does the parietal bone fuse?
Mid-sagittal suture
What is the supraorbital foramina?
Nerve and blood vessel openings
What are the optic canals for?
Optic nerves
What bone is at the lateral and superior aspects of the cranium?
Parietal bone
Where is the occipital bone?
Posterior of the skull
What does the skull do?
Protect the brain
Where do the temporal bones fuse when it fuses with the parietal bones?
Squamosal Suture
Where does the parietal bone fuse with temporals inferiorly?
Squamosals
What kind of joints connect bones of the skull except the mandible?
Suture (Immovable joints)
What bone forms the nasal septum?
The Ethmoid Bone
What is the Sella Turcica for?
The Pituitary Gland
What bone looks like a butterfly?
The Sphenoid Bone
What is the Mastoid Process?
The anchor site for the neck muscle
What is the carotid canal for?
The carotid artery
What is the Styloid Process?
The tongue and neck muscle attachment site
Does the Ethmoid Bone contain sinuses?
Yes
Does the Sphenoid Bone contain sinuses?
Yes
Does the Ethmoid Bone contain Nasal Conchae?
Yes, 2. A superior and middle one
What are the divisions of the skeleton?
-Axial -Appendicular
How many bones are there in the face?
13
How many occipital condyles does the occipital bone have?
2
How many sinuses does the frontal bone have?
2
How many bones are there in the skull?
22
How many bones does the middle ears have?
6
How many bones roof the eye orbits?
7
How many bones are there in the cranium?
8
What does the Mastoid Process contain?
Air cells
What does the sphenoid bone articulate with?
All cranial bones
Where is the zygomatic process?
Anterior towards the cheek
What do the occipital condyles do for the 1st vertebra?
Articulate it
What does the Crista Galli do?
Attaches meninges
What does the frontal bone form with the parietal bones?
Coronal suture
Which bones protect the brain?
Cranium
What is the hypoglossal canal for?
The hypoglossal nerve
What is the jugular foramen for?
The jugular vein
What does the Cribiform Plate roof?
The nasal cavity
