Chapter 6 Part 1 Flashcards Preview

Anatomy > Chapter 6 Part 1 > Flashcards

Flashcards in Chapter 6 Part 1 Deck (34):
1

Study of bone structure and treatment methods

Osteology

2

Supports and protects- assist in movement -mineral homeostasis -blood cell production -triglyceride storage

Bone tissue functions

3

Cylindrical portion

Diaphysis (saft) (long bone)

4

Distal and proximal ends

Epiphyses (long bone)

5

Joins diaphysis with epiphyses -ingrowing bones

Metaphysis (long bone)

6

Growth plate,involved in bone growth and length

Ephiphyseal (metaphysis)

7

At age 18-21 ______ stops growing in length and epiphyseal plate is replaced by epiphyseal line -rich in blood and nerve supply

Bones

8

Hyaline cartilage covering epiphysis in synovial joints

Articular cartilage

9

Outer bone covering- permits bone growth in thickness -attachment point for ligaments and tendons

Periosteum

10

Space in diaphysis

Meduallary cavity

11

Membrane lining medullary cavity

Endosteum

12

Matrix surrounding ________ consists of 25% water 25% collagen fiver and 50% salts

Bone cells

13

The most abundant slat hardens bone

Calcium phosphate

14

Contribute to tensile strength

Collagen fibers

15

Bone stem cells that divide to form osteoblast

Osteogenic

16

Immature bone building cells

Osteoblast

17

Mature bone cells that maintain bone tissue

Osteocytes

18

Function in bone resorption; crush bone, controlling blood calcium levels

Osteoclasts

19

Most common and strongest type -forms exterior of all bones -blood vessels penetrate compact bone though horizontal perforating canals

Compact (dense bone)

20

Structural units of compact bone consisting of concentric lamelle, lacunae, canaliculi

Osteons (compact bone)

21

Rings of calcified bone matrix

Concentric lamelle (osteons)

22

Spaces containing osteocytes

Lacumae (osteons)

23

Small channels permitting osteocytes to exchange materials with blood

Canaliculi (osteons )

24

Appeals like sponge that lightens bone -some adults spongy bone contain red bone marrow including axial skeleton, pelvic bone and ends of long bones

Spongy (cancellous) bone

25

Thin plates of bone

Trabeculae (spongy bone)

26

Blood cell production

Hemopoesis (spongy bone)

27

Measure bone density -dark areas; hot spots may indicate bone cancer -Lighter areas; cold spots may indicate osteoporosis

Bone scans

28

Intramembraneous ossification endochondral ossification

Bone formation 2 types

29

Brings before birth -bones are formed directly from mesenchyme; cranial bones and clavicle

Intramembranous ossification

30

Ossification center develop ; osteoblasts secrete matrix -calcification occurs ; salts hardens matrix -spongy bone formed -compact bone replaces most spongy bone

Intramembraneous ossification 4 steps

31

Most common methos involves bone forming directly from cartilage

Endochondral ossification

32

Cartilage model develops; immature cartilage cells called chondroblasts form- growth of cartilage model; interstitial growth lengthens cartilage ; appositional growth thickens cartilage by depositing cartilage on outer surface -primary ossification center develops; bone forms in diaphysis replacing most cartilage

Endochondral ossification 6 steps (1-3)

33

Medullary cavity develops -secondary ossification center develops; bone forms in epiphysis -epiphyseal plate and articular cartilage develop

Endochondral ossification 6 steps (4-6)

34

A connective tissue that remodels and repairs on a daily basis -makes up 18% of body weight

Bone tissue