Skull and Teeth Flashcards
what does the skull do?
for support and protection of the brain
what are the 2 sections of the skull?
neurocranium
viscerocranium
what are the joints between the cranial bones known as?
sutures
how many bones are part of an adult skull?
28 bone and 32 teeth
what are the 4 sections of bone of the skull?
cranial bones
facial bones
ear ossicles
how many cranial bones are there?
8
name the cranial bones
frontal
parietals (2)
occipital
temporals (2)
ethmoid
sphenoid
how many facial bones are there?
14
name the facial bones
maxillae (2)
palatines (2)
nasal (2)
lacrimal (2)
zygomatic (2)
vomer
inferior nasal conchae
mandible
how many ear ossicles are there?
6
name the ear ossicles
malleus
incus
stapes
- on each side
how are the 2 surfaces of the skull described?
ectocranial - external surface
endocranial - internal surface
what are the 2 formations of neurocranial bones?
membranous neurocranium
cartilaginous neurocranium
what is the difference between membranous and cartilaginous neurocranium?
membranous (or dermatocranium)
- mainly flat bone of skull cap
- formed by intramembranous ossification
cartilaginous (or chondrocranium)
- complex shaped bones of base of skull
- formed by endochondral ossification
how many adult teeth do we have?
32
