5 Bones and Joints of the skull

Question 1

Identify the eight bones of the adult cranium

Answer 1

parietal (x2)

temporal (x2)

Frontal

Occipital

Sphenoid

ethmoid

Question 2

Ethmoid?

Answer 2

cribriform plate lies in the anterior cranial fossa, conchae and perpendicular plate drops into the nose.
Functions associated with this bone: smell, increased mucosal surfaces in nose for breathing, sinuses and septum

Question 3

Sphenoid

Answer 3

skull bone that forms bridges between the skull and facial bones, provides origin for small muscles of mastication (pterygoid muscles) and forms part of the middle cranial fossa

Question 4

the three cranial fossae

Answer 4

anterior cranial fossa
middle cranial fossa
posterior cranial fossa

Question 5

the face bones
M P Z L N INC V M

Answer 5

Maxillae (2) form the upper jaw

Palatine Bones (2) posterior of hard palate, behind maxilla

Zygomatic Bones (2) “cheek bones”

Lacrimal Bones (2) medial wall of the orbit of eye (think tears)

Nasal Bones (2) the supportive bridge of the upper nose

Inferior Nasal Concha (2) largest of the three conchae of the skull in lateral wall of nasal cavity

Vomer (1) lower half of nasal septum

Mandible (1) forms lower jaw

Question 6

Foramen magnum

Answer 6

Passage of the spinal cord

Question 7

temporomandibular joint

Answer 7

hinge type synovial joint
Movements = protraction (protrusion), retraction (retrusion), depression and elevation

Question 8

Para-nasal sinuses

Answer 8

spaces lying within bones

Question 9

Maxilla bone

Answer 9

Question 10

Zygomatic Bones

Answer 10

Question 11

Vomer

Answer 11

Question 12

whats in the cranial fossa

Answer 12