grades 10-12 double click space to continue bone the dense, semi rigid, porous, calcified...
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THE SKELETAL SYSTEMBY: GARRICK ADAMSON
Grades 10-12
Double Click Space To Continue
INTRO TO THE SKELETAL SYSTEM
Bone The dense, semi rigid, porous, calcified connective tissue forming the major portion
of the skeleton of most vertebrates. It consists of a dense organic matrix and an
inorganic, mineral component
http://www.thefreedictionary.com/bone
BONE FUNCTIONS
Bones are The organs of the skeletal system that
Protect softer tissue Provide muscle attachment points House blood producing cells Store inorganic salts
BONE CLASSIFICATIONS
Long Bones
Short Bones
Flat Bones
Irregular Bones
Round Bones
PICTURE SLIDE
Long Bone Flat Bone
Irregular Bone Short Bone Round Bone
LONG BONE DESCRIPTION
Have longitudinal axes
Expanded ends (Epiphysis)
Acts as a lever
EXAMPLE OF LONG BONE
The Femur Located in thigh Supports movement
SHORT BONE DESCRIPTION
Cube like
Equal lengths
Equal widths
EXAMPLE OF SHORT BONE
The Talus Located in the ankle Acts as major ankle bone
FLAT BONES (3 DESCRIPTIONS)
Plate like structures
Broad Surfaces
Provides protection
EXAMPLE OF FLAT BONE
The Scapulae Located in the shoulder Serves as a broad plate for anchoring
muscles
IRREGULAR BONE DESCRIPTION
Variety of shapes
Connected to several other bones
Major function is support
EXAMPLE OF IRREGULAR BONE
The Vertebral Column Located in the back Has 33 articulated ring like bones
ROUND BONE DESCRIPTION
Usually small and nodular
Embedded in tendons
Act as pullies
ROUND BONE EXAMPLE
The Patella Located in the Knee Articulates with femur
BONE GROWTH
FACTORS OF BONE GROWTH
Pros
Healthy lifestyle
Healthy Diet
Daily activity
Proper calcium & vitamin D intake
Age
Cons
Poor diet
Smoking
Sedentary lifestyle
Disease
Age
BONE INJURY
Types of Injuries
Green stick fracture Transverse fracture Impact fracture Compound fracture
http://www.youtube.com/watch?v=nEydeUcNxtI A video compilation of bone injuries in sports (Viewer
Discretion is advised)
RISK FACTORS OF BONE INJURY
Your older than 65
You’ve broken a bone after age 50
Your close relative has osteoporosis or has broken a bone
Your health is "fair" or "poor"
You smoke
You am underweight for my height
BOTTOM LINE
•Bones are essential to homeostasis
•A healthy life style along with knowledge will lead you and your bones to a long healthy life.