Head And Neck 1 Flashcards
What are the two main divisions of the skeleton?
•Axial skeleton (80)
•Appendicular skeleton (126)
What are the two main divisions of the skull?
•Cranium
•Face
What cavity within the cranium holds the brain?
Cranial cavity
What bones make up the cranial cavity?
•Frontal
•Parietal
•Temporal
•Occipital
•Sphenoid
•Ethmoid
What is a synonym for skullcap?
Calvaria
What bone forms part of the calvaria the forehead and the roof of the orbits?
Frontal bone
What part of the skull do the parietal bones form?
Lateral walls and roof
What part of the skull do the temporal bones form?
•Inferior lateral walls
•Part of the floor of the cranium
What bone forms the posterior portion of the skull and the base of the cranium?
Occipital bone
What bone of the skull has a butterfly shape and unites the cranial and facial bones?
Sphenoid bone
What bone of the skull lies between the orbits and forms the anteromedial floor of the cranium?
Ethmoid bone
What are sutures?
Fibrous articulations between bones of the skull
What articulation between three of these bones occurs anteriorly in a frontal plane?
Coronal suture
What articulation can be seen running along the midline in this view?
Sagittal suture
What suture lies between the parietal bone and temporal bone on each side?
Squamosal suture
What suture appears on the posterior aspect of the skull between the parietal and occipital bones?
Lambdoidal suture
What bones occasionally appear within the sutures of the skull?
Sutural bones
What cavities hold the eyeballs?
Orbits
What two large openings lie within these cavities?
•Superior orbital fissure
•Inferior orbital fissure
Within what cavity of the skull does air pass through on its way to the lungs?
Nasal septum
What structure divides it into right and left halves?
Nasal septum
What scroll shaped bones are visible on the inferior lateral walls of this cavity?
Nasal conchae
What is a synonym for the brow ridges?
Superciliary arches
What cavities lie within the frontal bone?
Frontal sinus
What part of the temporal bone holds the middle and inner ear?
Petrous region
What opening occurs here for blood vessels and nerves?
Internal acoustic meatus
What is the posterior region of the temporal bone?
Mastoid region
What prominence in this region that lies posterior to the ear serves as the insertion for the sternocleidomastoid and contains air cells?
Mastoid process
What region of the temporal bone surrounds the bony external opening of the ear?
Tympanic region
What thin point of bone here serves as an attachement for several hyoid and tongue muscles?
Styloid process
What opening does the facial nerve pass through on the inferior surface of the skull?
Stylomastoid foramen
What opening does the internal carotid artery pass through here?
Carotid canal