Week 2 Bone And Anatomy Flashcards
Characteristics of axial skeleton
Vertebral column ribs and skull
80 bones
What are the two main groups of bone
Axial skeleton
Appendicular skeleton
Characteristics of an appendicular skeleton
Bones of the pelvis and lower limb
126 bones
Functions of bone tissue
Support – skeleton is structural framework of body
Protection – skeleton protects many internal organs
Assists in movement – muscles pulling on bones
Mineral homeostasis – bone tissue stores and releases minerals
Blood cell production – within certain bones
Describe long bones
Weight bearing
Short bones
.
Flat bones
Provide protection
Irregular bones
.
Sesamoid bones
Developing tendons with compression
Sutures bones
Small flat irregular bones of the skull
Bulges depressions and Holes in bones service
Side of attachment for muscles ligaments and tendons
Site of muscle and ligament attachment
For tuberosity
Rounded projection
Site of muscle and ligament attachment
For crest
Narrow, prominent ridge
Site of muscle and ligament attachment
For trochanter
Large blunt irregular surface
Site of muscle and ligament attachment
For tubercle
Small rounded projection
Site of muscle and ligament attachment
For epicondyle
Raised area above condyle
Site of muscle and ligament attachment
For process
Any bony prominence
Depressions and openings for fissure
Narrow openings
Depressions and openings for foremen
Round or oval opening through a bone
Depressions and openings for fossa
Shallow, basin like depression
The anatomy of a diaphysis
The shaft of a long bone
The anatomy of a epiphysis
The ends of a bone
The anatomy of a metahysis
Where the Diaphysis joins epiphysis
The anatomy of a epiphyseal plate
A layer of hyaline cartilage that allows the diapjysis of the bone to grow in length
The anatomy of a articular cartilage
Covers epiphysis and reduces shock and friction
Nutrient foremen
Allows artery and vein to enter the bone
The anatomy of a periosteum
Tough sheath of connective tissue that surrounds the bone surface.
It contains bone forming cells allowing bone to grow in diameter not length.
The anatomy of a medullary cavity
Contains the bone marrow
Explain osteogenic cells
Stem cells in periosternum and endostrnum
Explain Osteoblasts
Bone forming cells
Explain osteocytes
Mature bone cells
Explain osteoclasts
Cells that break down (resort) bone matrix
Explain a compact bone
Does not have visible spaces in bone matrix, forms thick walled diaphysis
Explain spongey bone
Consists of delicate sheets of bone
End of long bones
How does bone formation occur
Intranenbranous ossification
- Bone forms directly within mesenchyme
- within fibrous tissues
- flat bones of the skull and the mandible
Endochondral ossification
-Bone forms within hyaline cartilage that develops from the mesenchyme. (Most bones are former this way.