Head, neck and trunk Flashcards
How many bones are in the skull?
22
How many cranium bone are there?
8
How many facial bones are there?
14
What are the functions of the skull?
Protects the brain.
A site of muscle attachment.
Provides facial expressions.
Provide some key functions in relation to the entry of the respiratory and digestive systems.
What is the function of the cranium bones?
Form the vault that encloses and protect the brain.
Name the cranium bones
Parietal (x2)
Temporal (x2)
Frontal
Occipital
Ethmoid
Sphenoid
What is the function of the facial bones?
Form sinuses
Offer sound chambers
Offer unique inner surfaces which attach membranes, blood vessels and nerves.
Name the facial bones
Inferior nasal concha (x2)
Lacrimal (x2)
Mandible
Maxilla (x2)
Nasal bones (x2)
Palatine bones (x2)
Vomer
Zygomatic bones (x2)
What are sutures?
Where bones of the skull ossify and become united over time.
Name three sutures
Sagittal suture
Lambdoid suture
Coronal suture
What bones are united at the sagittal suture?
The two parietal bones.
What bones are united at the lambdoid suture?
The parietal bones and the sutural bone.
Name three muscles
Orbicularis oris
Orbicularis oculi
Masseter
Describe the orbicularis oris
Circular muscles that surround the mouth.
It functions to close the mouth.
It also functions by supporting swallowing, whistling, chewing and pronunciation of works.
Origin = maxilla and mandible
Insertion = skin around the lips