Topic 10: Skeletal System - Axial Skeleton (Skull, Hyoid) Flashcards
What are the three main bone groupings of the skull?
- Cranium
- facial bones
- auditory ossicles
How many bones are in the cranium?
- 8 bones (next to the brain)
How many bones are in facial bones?
- 14
How many bones are in auditory ossicles?
- 6 (3 bones on each side in the middle ears)
Name the 8 bones in the cranium (6)
1 frontal (forehead)
2 parietal (sides)
2 temporal
1 sphenoid
1 ethnoid
1 occipital (back of head)
What does the ethnoid form?
- forms superior and middle nasal conchae (deep into skull)
In lecture, what is the sphenoid?
- thin little strip connected throughout
Name the 14 facial bones (8)
2 nasal
2 maxillae
2 zygomatic
2 lacrimal
2 palatine
2 inferior nasal conchae
1 vomer
1 mandible
in lecture, the nasal bone is the ___ part of the nose
superior (bridge)
in lecture, the maxillae ___ at the middle. If they do not, it causes ___ lip.
- fuse
- cleft
In lecture, the zygomatic bone are your ____ that connect to where to form what?
- cheekbones
- connects to temporal bone to form the zygomatic process
In lecture, the lacrimal bone includes your ___ducts
tear
What bones form the hard palate?
2 palatine and 2 maxillae
In lecture, the mandible also refers to your __. It connects to the ____ bone
- jaw
- temporal
In order, what are the three auditory ossicles from the outside to inside the ear?
1) malleus
2) Incus
3) Stapes (smallest bone in body!!!)
What bone does not articulate with other bones directly?
- hyoid bone
- no joints/connections to other bones
What is the purpose of the hyoid bone? (2)
- attaches muscles of tongue and neck
- assists in swallowing
