Chap 5: Bone (bone histogenesis) (exam 2) Flashcards Preview

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Flashcards in Chap 5: Bone (bone histogenesis) (exam 2) Deck (20)
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1
Q

remodeling of bone happens immediately meaning that irregular trabeculae become more what

A

parallel osteons

2
Q

Vascular mesechyme between trabeculae/osteons can develop into what

A

bone marrow and endosteum

3
Q

all areas of ossification will eventually do what

A

fuse

4
Q

endochondral ossification occurs where

A

most long and short bones

5
Q

During the general process of endochondral ossification blood vessels invade what?

A

invade the hyaline cartilage into the middle of the chondrogenic perichondrium

6
Q

The blood vessels will bring what

A

Oxygen

7
Q

in ECO oxygen make osteogenic cells turn into

A

osteoblasts

8
Q

Osteoblasts will secrete osteoid where

A

just inside the periosteum to form a periosteal collar

9
Q

what does the periosteal collar do in endochondral ossification

A

prevents diffusion of oxygen and nutrients to chondrocytes below
provide structural support

10
Q

the periosteal bud is what

A

the original invading capillary along with osteoprogenitor and hemopoietic stem cells

11
Q

in endochondral ossification bone growth advances in which direction

A

toward epiphyseal plates

12
Q

in endochondral ossification cartilage continues to grow within epiphysis by what

A

interstitial growth

13
Q

Remodeling in the diaphysis will cause what

A

eliminate calcified cartilage, create marrow cavity, provide osteon structure, create volkmann’s canals

14
Q

what are some characteristics of secondary centers of ossification

A

NO periosteal collar
does NOT result in length
articular cartilage remains

15
Q

an increase in length results from what?

A

bone in metaphysis growing towards epiphysis as cartilage in epiphyseal growth plate continues to develop

16
Q

An increase in width results from

A

growth from osteogenic periosteum

17
Q

hormones associated with sexual maturity will do what to cartilage development

A

it will slow it down in the epiphyseal growth plates

18
Q

Bone development is controlled by high what

A

thyroid hormones and sex hormones

19
Q

does articular cartilage remain or disperse during bone development

A

it remains

20
Q

is articular cartilage affected by hormones….

A

naw bitch