Skeletal Biology Flashcards
1
Q
endocranial
A
inner surface of the cranial vault
2
Q
ectocranial
A
outer surface of the cranial vault
3
Q
appendicular skeleton
A
includes the pectorial girdle (clavicle and scapula) and the pelvic girdle
4
Q
axial skeleton
A
includes the skull, spine, sacrum, ribs, and sternum
5
Q
what are the functions of bones?
A
- support
- protection
- movement
- production of blood cells
- storage: fat and calcium
6
Q
do bones exist in a vacuum?
A
no they are apart of the muscoskeletal system and work together with the soft tissues
7
Q
what are the properties of bone?
A
- rigidity and flexibility
- lightweight support and strength
- less than 20% of body weight
- reshape and repair itself
8
Q
what is the composite material of bone?
A
20% water
35% organic materials
45% inorganic material
9
Q
compact/cortical bone
A
- dense bone
- thick outer part
10
Q
trabecular/cancellous/spongy bone
A
- think, boney spicules
- different porosity
- nerve endings
11
Q
subchondral bone
A
- at the joint, compact bone covered by cartilage in life
- smoother and shinier
- lack haversian system
12
Q
periosteum
A
- thick tissue covering the outer layer of bones during life
- missing in dry bones
13
Q
endosteum
A
cellular membrane that lines the inner surface of bones
14
Q
what is the long bone structure?
A
- diaphysis
- epiphysis
- trabecular bone
15
Q
diaphysis
A
- primary ossification center
- medullary cavity
- metaphysis
