Bone Tissue Flashcards
What is an organ made up of several different tissues (bone, cartilage, dense ct, adipose and nervous tissue) working together?
Bone
What does a long bone consist of?
- Diaphysis (bone shaft)
- 2 epiphyses (both ends of the bone at the joints)
- 2 metaphyses (region between diaphysis)
- Articular cartilage covering both epiphyses
- Periosteum (connective tissue surrounding the diaphysis)
- Medullary Cavity (hollow space within diaphysis
- Endosteum (thin membrane lining the medullary cavity)
Long Bone Structure :
Bone shaft
Diaphysis
Long Bone Structure :
Both ends of the bone at the joints
2 Epiphyses
Long Bone Structure :
Region between diaphysis and epiphysis
2 Metaphyses
Long Bone Structure :
What covers both epiphyses?
Articular cartilage
Long Bone Structure :
What is connective tissue surrounding the diaphysis?
Periosteum
Long Bone Structure :
What is the hollow space within diaphysis?
Medullary Cavity
Long Bone Structure :
What is the thin membrane lining the medullary cavity?
Endosteum
What are the 4 types of cells in bones?
- Osteoprogenitor cells
- Osteoblasts
- Osteocytes
- Osteoclasts
Which bone cell is stem cells able to differentiate into the other types of cells?
Osteoprogenitor cells
Which bone cell is for bone building cell that secrete matrix and initiate calcification?
Osteblast
Which bone cell is for bone building cell that secrete matrix and initiate calcification?
Osteoblast
Which bone cell are mature bone cells?
Osteocytes
Which bone cell remodels bones and cause them to release calcium ; bone resorption?
Osteoclast
Compact or Spongy Bone :
Good at providing protection and support ; strongest
Compact
Compact or Spongy Bone :
Good at providing protection and support ; strongest
Compact
Compact or Spongy Bone :
Lightweight and provides tissue support ; also called trabecular or cancellous bone
Spongy Bone
What is the process of bone formation called?
Ossification (osteogenesis)
How do bones form?
- During embryological and fetal development
- When bones grow before adulthood
- When bones remodel
- When fractures heal
What are the types of ossification?
Intramembranous
Endochondral
Which type of ossification occurs in flat bones when a connective tissue membrane is replaced by bone?
Intramembranous
Which type of ossification replaces cartilage with bone in the developing embryo and fetus?
Also occurs in epiphyseal plates of long bones as they grow in length
Endochondral
As osteoblasts deposit bone on the outer surface, what widens the medullary cavity form within?
Osteoclasts
