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Skeletal system (Skeletal system/tissues (Long bone (Articulate cartilage,…
Skeletal system
Skeletal system/tissues
Movement
Movement with help of muscle
Support
Framework that support the weight of the body
Protection
Cranial
Brain
Rib cage
Organs of the thorax
Vertebrae
Spinal cord
Mineral storage
Calcium
Phosphate
Blood cell formation
Yellow bone marrow
Site of fat storage
Red bone marrow
makes blood cells
Energy storage
Fats
Structural components
Organic
Collagen
Flexibility
Strenght
Extracellular matrix
Cells
35%
Inorganic
65$%
Mineral
Resists compression
Compact bone
Outer part of bone
osteons
Long cylinder packed together
Blood vessels
Spongy bone
Internal layer
Inside flat bones
Osteocytes
Extracellular matrix
Trabeculae
At ends of long bones
Long bone
Articulate cartilage
Ends of bone
Hyaline cartilage
Endosteum
Lining of medullary cavity
Epiphyseal line
Epiphysis
At the ends of bone
Diaphysis
Medullary
Contains fatty yellow marrow on adults
Periosteum
Membrane around surface
Yellow bone marrow
Fats cells
Red bone marrow
Red blood cells
Types of bone cells
Osteoblast
Osteocytes
Osteoclast
Skeletal muscle
Functions
Produce movement
Open body passages way
Maintain posture
Generates heat
Properties
Contractibility
Generates tension
Excitability
Ability to respond to a stimulus
Extensibility
Ability to stretch
Elasticity
Ability to return to original shape
Connective tissue layers
Endomysium
Reticular fibers creates space
Perimysium
Covers each fasicle
Epimysium
Binds basicle together
Fasicle
Binds whole muscle together
Components of skeletal fibers
Sarcolemma
Transverse tubeles
Sarcoplasmic reticulum
Smooth endoplasmic
Storage of calcium
Myofibrils
Muscle fibers
Joints
Fibrous joints
Sutures
Only on skull
No movement
Syndesmosis
Bundles of dense regular connective tissue
Little movement
Found on carpals/tarsals
Gomphosis
Periodontal ligament
Between teeth
No movement
Cartilaginous joints
Synchandrosis
Hyaline cartilage
Epiphyseal plate
No movement
Between first rib and manubrium
Symphysis
Hyaline cartilage
Fibrocartilage
Slightly movement
Puvic symphisis
Synovial joints
Joint cavity
Outer layer
Dense irregular connective tissue
Inner layer
Areolar connective tissue
Lubricating
Shock obsorption
Nourishes the articular cartilage
Six structural types of synovial joints
Plain
Nonaxial movement
Flexion and extension
Hinge
Flexion and extension
Uniaxial movement
Pivot
Uniaxial movement
Rotation
Condylar
Biaxial movement
Flexion and extension
Adduction and abduction
Saddle
Biaxial movement
Flexion and extension
Adduction and abduction
Ball and socket
Adduction and abduction
Flexion and extensiion
Rotation