SKELETAL SYSTEM. SKELETAL FUNCTIONS 1. Support for organs tissue, postural support against gravity...
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Transcript of SKELETAL SYSTEM. SKELETAL FUNCTIONS 1. Support for organs tissue, postural support against gravity...
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SKELETAL SKELETAL SYSTEMSYSTEM
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SKELETAL FUNCTIONS
1. Support for organs tissue, postural support against gravity
2. Protection of vital organs, brain, lungs, and heart.
3. Storage of minerals, especially calcium and phosphorous
4. Hemopoiesis: Contains red bone marrow (hemopoietic tissue) for the production of more blood cells
5. Movement, if muscles had nothing to anchor their tendons to, there would be very inefficient bodily movement.
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Bone Classification by Shape
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Anatomy of a
Typical Long Bone
What type of connective tissue cells make up articular cartilage?
What is the proper name for a bone cell?
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Histology of Bone
Which cells lay down fresh bone matrix?
Which cells “recycle” bone matrix?
What category of tissue does bone belong to?
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What is an osteon?
What is a lacuna?
What are canaliculi?
What is a haversian canal?
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Compact and Spongy Bone Tissue Organization Bones of the
skeleton contain a combination of both types of bone tissue organization.
What type of bone shape is shown to the left?
What type of bone tissue is the green arrow pointing at?
What type of bone tissue is the red arrow pointing to?
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Osteogenesis - 10 week fetus
Over 300 Cartilaginous Models in Skeleton
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Osteogenesis - 16 week fetus
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Endochondral Ossification
(Bone Formation)
Name this structure
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Bone Fracture Repair
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Bone Fracture Repair (cont’d)
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MAJOR BONES OF THE SKELETON
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AXIAL DIVISION
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SPINAL CURVATURES
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APPENDICULAR DIVISION
Bones of the upper and lower extremities
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UPPER EXTREMITY
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Types of JOINTS - Articulations
1. Synarthrotic – Fibrous – No movement
2. Amphiarthrotic – Cartilaginous. Slight movement but no joint cavity
3. Diarthrotic – Synovial – Highest range of motion with joint cavity between bones
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Joint Movement Terms FLEXION vs. EXTENSION
flexion
extension
hyperextend
flexion
dorsiflexion
plantarflexion neutral
extend
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Joint Movement TermsABDUCT vs. ADDUCT
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Joint Movement TermsROTATION vs. CIRCUMDUCTION
pivot
circle
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KNEE Joint Anatomy