Bones
Number of bones in the skull
22
Formed by the two parietal bones
Saggital
Found at the center of the occiput
external occipital protuberence
Number of bones in the cranium
8
This muscle attaches to the sternum, the clavicle, and the mastoid process
SCM
Main action of masseter
elevate the jaw
Nerve structure located in the posterior triangle, passing between the anterior and middle scalenes
Brachial plexus
Form the top and sides of the cranium
Parietal
Formed by the temporal and parietal bones
Squamous
Bony structure that lies parallel to the base of the mandible at the level of the 3rd / 4th vertebra
hyoid bone
Bone where the upper teeth insert
maxilla
Muscle that attaches to the second rib
Posterior scalenes
Two unilateral actions of the scalene muscles
Laterally flex same side, rotate to opposite side
Borders of the anterior triangle
mandible, scm, trachea
Located on the posterior, inferior skull
Occiput
Formed by the parietal and frontal bones
Coronal
Attachment site for the SCM, Spenius capitus, and longissimus
Mastoid process
Name of the jaw bone
mandible
Strongest muscle in the body relative to its size
Masseter
Group of muscles that elevate the hyoid bone
Suprahyoids
Connects frontalis to occipitalis
galea aponeurotica
Butterfly shaped bone located behind the eyes
SPHENOID
Formed by the parietal and occiput
Lambdoid
Landmark of the jaw which is located 1" anterior to the condyle and serves as the insertion of the temporalis muscle
Coronoid process
Landmark that extends laterally from the external occipital protuberance to the mastoid process
Superior nuchal line
The medial and lateral ___________perform lateral deviation of the jaw
Pterygoids
This muscle acts as a synergist to the masseter but also acts as an antagonist when performing retraction of the mandible
Temporalis
Pulse of this vessel can be felt near the superior anterior portion of the SCM
Carotid artery
Two bones that merge to form the cheek bone
Temporal and zygomatic
What type of joint are sutures
What are the 3 landmarks of the temporal bone discussed in this chapter?
Styloid process, mastoid process, and zygomatic arch
Caution should be taken with this temporal bone landmark that is fragile and deep to the facial nerve
Styloid process
Muscle embedded in the skin and fascia of the anterior neck, originating in the fascia covering the pec major and inserting at the mandible and skin of the lower face
Platysma
Infrahyoid muscle that attaches to the scapula
Omohyoid
Static pressure on this nerve when exploring the massseter and zygomatic arch can cause irritation and even nausea
Facial