Skeletal System: Gross Anatomy Flashcards Preview

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Flashcards in Skeletal System: Gross Anatomy Deck (12):
1

Name some examples of FLAT BONES

Bones of skull, sternum, clavicle

2

S & F of PERIOSTEUM

S - Outer layer: of DENSE IRREGULAR, continuous w/ TENDONS and LIGAMENTS = strong attachment
- Inner layer: CELLS and BLOOD VESSELS,, lay down layers of MATRIX to widen BONE
F - Covers BONE, except at joint surface

3

S & F of COMPACT BONE

S - Thin layer around exterior
F - Adds strength, protects SPONGY BONE from chipping
S - Thick layer around MEDULLARY CAVITY
F - Provides strong support in one direction

4

S & F of SPONGY BONE

S - Latticework of thin struts (trabeculae)
F - Reduces weight of BONE, protects MARROW, withstands pressure from different directions

5

S & F of ENDOSTEUM

S - Delicate CT membrane
S - Lines SPONGY BONE, MEDULLARY CAVITY and CENTRAL CANALS of OSTEONS in COMPACT BONE
S - Incomplete layer of CELLS
F - BONE widening, remodeling and repair

6

LONG BONES can be identified by...

...having a shaft and 2 ends
e.g. legs, arms, fingers, toes

7

Layers of the *end* of a LONG BONE from superficial to deep

- Periosteum
- Thin COMPACT BONE
- Lots of SPONGY BONE (ENDOSTEUM, MARROW)

8

Layers of the *shaft* of a LONG BONE from superficial to deep

- Periosteum
- Thick COMPACT BONE
- Thin SPONGY BONE (ENDOSTEUM, BONE MARROW)

9

S & F of the EPIPHYSEAL PLATE

S - Cartilage growth plate
F - Allows lengthening

10

S & F of the EPIPHYSEAL LINE

S - Cartilage turns to BONE
F - Stops lengthening

11

3 things to know about the MEDULLARY CAVITY

1) In children it contains *red* MARROW
2) Lined w/ ENDOSTEUM
3) In adults it contains *yellow* MARROW

12

S & F of ARTICULAR CARTILAGE

S - Made of HYALINE
F - Covers joint surface, prevents rubbing and degeneration of BONE ends