Ch.4 Skeletal System Flashcards
1
Q
Function of Bones
A
- Support
- Structure
- Protection of vital organs
- Leverage, locomotion, defense, and offense
- Serves as a dynamic storage area for minerals (Ca:P)
- Blood cell formation
2
Q
Compact bone
A
- Hard layer
- Entire shaft of the bone
3
Q
Cancellous (spongy) bone
A
- Some marrow
- Helps with blood cell formation
- Seen more in young, immature animals
4
Q
Medullary cavity (marrow cavity)
A
- Filled with marrow
- Surrounded by the cortex of a long bone
- Does most of blood cell formation
5
Q
Epiphysis
A
Proximal and distal
6
Q
Metaphysis
A
Flared area of bone
7
Q
Epiphyseal cartilage
A
- Where bone lengthens
- Between Epiphysis and Diaphysis
8
Q
Articular cartilage
A
Thin layer of hyaline cartilage that covers the Epiphysis
9
Q
Periosteum
A
Fibrous membrane the covers the surface of a bone
10
Q
Endosteum
A
Fibrous membrane that line the marrow cavity
11
Q
Long bone
A
- Greater in one dimension than any other
- Function: Levers, support, locomotion and prehension
- Femur
12
Q
Short bone
A
- Equal in all directions
- Function: Absorb concussion
- Capals and tarsals
13
Q
Flat bone
A
- Thin and expand in two dimensions
- Function: Protection of vital organs
- Ribs, skull, pelvis
14
Q
Sesamoid bone
A
- Resemblance of a sesamed seed
- Function: Reduces friction, increase leverage or change direction of pull
- Knee cap
15
Q
Irregular bone
A
- Unpaired bones on the median plane
- Function: Offer protection, support and muscular attachment
- Vertebrae
