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Flashcards in Hell aka bones Deck (79)
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1

Cells of perichondrium secrete matrix against external face of existing cartilage

Appositional growth

2

Cells of perichondrium secrete?

matrix against external face exsiting cartilage

3

Chondrocytes divide and secrete new matrix, expanding cartilage from within.

Interstitial growth

4

What is the skeletal cartilage surround by?

Perichondrium, Dense Irregular CT, Blood vessels

5

What are the three types of cartilage?

Hyaline, elastic, fibrocartilage

6

Which type of cartilage: Collagen fibers only, looks smooth and glossy?

Hyaline

7

Axial skeleton contains...?

skull, vertebral column and rib cage

8

Axial skeleton purpose?

protection, support

9

Appendicular skeleton contains..?

limbs and girdle

10

Appendicular skeleton purpose?

movement

11

4 types of bone?

long, short, flat, irregular

12

longer than wide
limb, wrist and ankle

long bones

13

cube shape- wrist and ankle
sesamoid bones

short bones

14

thin, flat and slightly curved- sternum, ribs, skull

flat bones

15

complicated shapes- vertebrae

irregular

16

Secreted by parafollicular cells of thyroid; inhibits osteoclasts (at pharmacological/high doses in humans)

calcitonin

17

secreted by parathyroid; stimulates osteoclasts (when Ca2+ is low)

Parathyroid hormone

18

: Secreted by osteoblasts (and high conc. is therefore a surrogate marker to indicate bone deposition/growth

Osteocalin

19

stimulates pancreatic beta cells to secrete insulin, and stimulates adipocytes to secrete adiponectin, which augments insulin sensitivity of cells.

Osteocalin

20

are bones organs?

yessssss

21

Bone textures; dense outer layer, smooth and solid

compact

22

Bone textures: aka cancellous or trabecular, sparse inner layer

spongy

23

outer or inner
periosteum

outer

24

outer or inner
endosteum

inner

25

What covers articular surfaces?

hyaline cartilage

26

Osteogenic layer contains?

osteogenic cells

27

Yellow marrow is

triglyceride (fat) storage

28

Red marrow is

Hematopoiesis

29

Where is red marrow found?

within the trabecular cavities of spongy bone and diploe of flat bones and irregular bones

30

Can yellow marrow change to red?

if necessary yas