Bone tissue Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Bone or osseous tissue | -dense supportive connective tissue -contains specialized cells -composed mostly of solid extracellular matrix with college fibers |
Inorganic matrix | 65% of total bone weight, composed of minerals |
Organic matrix | 35% of bone total weight, composed of college and other ECM components |
Dense matrix | Deposit of calcium salts |
Osteocytes (bone cells) | Within lacunea organized around blood vessels |
Canaliculi | Narrow passageways that allow for exchange of nutrients, wastes, and gases between osteocytes. |
Periosteum | -covers outer surface of Bones (except joints) -consists of outer fibrous and inner cellular layers -connected to bone by perforating fibers |
Perforating fibers | Collagen fibers |
What makes up almost 2/3 of bone Mass? | Calcium phosphate Ca3(PO4)2 |
How much of the body calcium is stored in bone? | 85% |
Hydroxyapatite | Mixture of calcium phosphate and calcium hydroxide and is a formed Crystal. |
What makes bone one of the strongest and hardest substances of the body? | Crystalline structure |
Characteristics of a bone lacking a calcified matrix | Looks normal but is very flexible |
Organic bone matrix (osteoid tissue) composed of? | -protein fibers -glycosaminoglycans -proteoglycans -glycoproteins |
How much of the bone Mass is callogen fibers? | 1/3 |
What is torsion | Twisting |
What is tensile | Stretching |
What help draw water into the osteoid matrix? | Glycosaminoglycans and proteoglycans |
Bone cells make up how much percent of bone Mass? | 2% |
What are the 4 types of bone cells | -osteogenic -osteoblasts -osteocytes -osteoclasts |
Functions of osteogenic cells | -mesenchtmal stem cells that divide to produce osteoblasts -located in inner cellular layer of periosteum and in endosteum -metabolically and mitotically active -assist in fracture repair |
Osteogenic cells | Stem cells whose divisions produce osteoblasts |
Osteoblasts | Bone building cells -immature cells that produce new bone matrix during osteogenesis (ossification) - surround themselves themselves with home material and become osteocytes |
Osteoid | Matrix produced by osteoblasts that has not yet become calcified |
Osteocytes | Mature bone cells that are surrounded in bone matrix. -less metabolically active, but still critical for maintaining bone matrix -remain interconnected via cytoplasmic extensions that pass through canaliculi |
Major functions of osteocytes | -maintain protein and mineral content of matrix -help repair damaged bone |
Osteoclasts (bone dissolving cells) | -large and are multinucleated -dissolve and remove bone matrix -secrete about and protein-digesting enzymes |
What is a resorbtion Bay? | Where osteoclasts are located in shallow depressions of external bone surface |
Osteolysis | Bone degredation by osteoclasts |
Created by:
Garciamentzer
Popular Anatomy sets