In what type of bone do you find Haversian canals?
Osteonal (Haversian) canals are found within the osteon of compact bones.
What cells are located in the inner layer of the periosteum?
Osteoprogenitor cells
Osteoblasts
Osteoblasts
What subtype of tissue describes the fibrous outer layer of the periosteum?
Dense irregular connective tissue
Name the functions of the periosteum
To produce the diaphysis
To maintain, remodel, and repair the bone
To help anchor the tendons and ligaments
To maintain, remodel, and repair the bone
To help anchor the tendons and ligaments
What are the three types of endosteum?
Cortical endosteum
Trabecular endosteum
Osteonal Endosteum
Trabecular endosteum
Osteonal Endosteum
Name all of the important bone cells
Osteoprogenitor cells
Osteoblasts
Osteocytes
Osteoclasts
Osteoblasts
Osteocytes
Osteoclasts
What are the components of the bone matrix?
Organic materials
Inorganic materials
Water
Inorganic materials
Water
What are the components in the osteoid?
Collagen (mostly Type I)
Amorphous ground substance (Glycoproteins, proteoglycans, GAG's, lipids)
Amorphous ground substance (Glycoproteins, proteoglycans, GAG's, lipids)
Where are hydroxyapatite crystals located?
In the inorganic matrix of extracellular matrix of bone.
What is in the inorganic matrix of the bone?
Calcium
Phosphorus
Bicarbonate
Citrate
Magnesium
Sodium
Potassium
Phosphorus
Bicarbonate
Citrate
Magnesium
Sodium
Potassium
Why is bone strong?
Strength is a result of the association of hydroxyapatite crystals with collagen.
What bone cells tend to be spindle-shaped with a pale nucleus and cytoplasm?
Osteoprogenitor cells
How do you find an osteoprogenitor cell?
Look for spindle shaped cells that are not up against the a bony spicule
What structures help osteocytic processes share nutrients with each other and get rid of waste?
Gap junctions
How do you tell what type of cell is lining the bone?
You can't. They are just bone-lining cells
How can you tell that a osteoclast is not a megakaryocyte?
The osteoclast is against the bone
Where is the circumferential lamellae located?
On the periosteal and endosteal surfaces
What is the reversal line?
The border of an osteon at which the osteoclasts stope eating away the adjacent osteon.
What type of collagen takes up stain in a demineralized section of bone?
Type I collagen
What type of bone formation starts from mesenchyme and goes to bone?
Intramembranous Ossification
What part of the bone causes growth at the primary center of ossification?
The diaphysis
What part of the bone causes growth at the secondary center of ossification?
The epiphysis
What part of the bone vascularizes during endochondrial ossification/
The perichondrion around the diaphysis
In order from the epiphysis, what are the zones in the developing bone?
Epiphysis
Zone of reserve cartilage
Zone of proliferation
Zone of maturation & hypertrophy
Zone of Calcification/ Zone of ossification
Zone of reserve cartilage
Zone of proliferation
Zone of maturation & hypertrophy
Zone of Calcification/ Zone of ossification
What type of cells are in the zone of reserve cartilage?
Chondrocytes capable of mitosis
Name the three categories of joints and an example of each
Synostosis: Adult skull sutures
Syndesmosis: Radial-ulnar joint
Synchondrosis: Physis or intervertebral discs
Syndesmosis: Radial-ulnar joint
Synchondrosis: Physis or intervertebral discs
What composes the joint capsule of a diathrodial joint?
Outer fibrous layer
inner synovial layer
inner synovial layer
What type of cells reside in the synial layer of a diarthrodial joint?
macrophages
Fibroblast-like cells
Fibroblast-like cells
Kartensatzinfo:
Autor: toncrayb
Oberthema: Medicine
Thema: Microanatomy
Veröffentlicht: 03.11.2009
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