The Skull & Muscles of the Head (AP) Flashcards
1
Q
Divisions of the cranium
A
- Neurocranium
- Viscerocranium
2
Q
What joints hold the bones of the cranium together?
A
Sutures
3
Q
Fibrous joints between cranial bones in infants
A
Fontanellae
4
Q
3 fossae in the cranium
A
- Anterior
- Middle
- Posterior
5
Q
Openings in the facial skeleton
A
- Bony orbits
- Nasal cavities
- Oral cavity
6
Q
What type of joint is the TMJ
A
Modified hinge synovial
7
Q
Articulating bones of TMJ
A
- Condyle of mandible
- Mandibular fossa of temporal bone
8
Q
Gross movements attainable at the TMJ
A
- Hinge
- Gliding
9
Q
3 ear ossicles (lateral to medial)
A
- Malleus
- Incus
- Stapes
10
Q
Where does the skull articulate with the vertebral column?
A
- Lateral masses of the atlas
- Occipital condyles of occipital bone
11
Q
What is the pterion formed by?
A
- Frontal bone
- Sphenoid bone
- Parietal bone
- Temporal bone
12
Q
4 fontanellae in infants, and when each closes
A
- Sphenoidal (6 months)
- Mastoid (6-18 months)
- Anterior (7-18 months)
- Posterior (2 months)
13
Q
Why is the TMJ atypical of a normal synovial joint?
A
Fibrocartilage lining instead of hyaline
14
Q
3 extracapsular ligaments stabilising TMJ (and where each is from/to)
A
- Lateral ligament (articular tubule to mandibular neck)
- Sphenomandibular ligament (sphenoid spine to mandible)
- Stylomandibular (thickening of fascia of parotid gland)
15
Q
Movements attainable at the TMJ
A
- Mandibular depression/elevation
- Lateral deviation
- Retrusion
- Protrusion
