Stack #109886
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| epithelium | cover for the suface of body
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| connective tissue | connects cell layers together
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| keratin | protein in dead epidermal cells that helps water proof and protect living layers beneath it
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| melanin | pigment found in inner layer
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| heat response | capillaries in dermis dilate
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| cold response | blood vessels in skin constrict
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| first degree burn | death of epidermal cells
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| second degree burn | damage to dermis
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| third degree burn | destroys epidermis and dermis
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| periostem | tough membrane that covers each bone
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| canaliculi | channels that aid in nutrient exchange and waste exchange
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| osteoblasts | cells that develop into mature bone cells
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| osteocytes | mature bone cells
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| haversian canal system | structural component of compact bone, consists of blood vessels and nerves
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| red marrow | manufactures blood cells
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| yellow marrow | contains blood vessels, nerves, and fat tissue
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| ossification | when bone begins to replace cartilage in the ninth week of human development
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| epiphyseal plates | at both ends of long bones
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| movable joints | shoulder and elbow
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| immovable joints | skull bones
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| ball and socket joints | hips and shoulders
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| pivot joints | first two vertebrate of the neck
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| hinge joints | elbows, knees, fingers, and toes
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| gliding joints | bones in wrist and ankle
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| involuntary muscles ex. | smooth, and cardiac
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| smooth muscles | found in places such as blood vessels
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| cardiac muscles | found in heart, striped
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| skeletal muscles | have more than one nucleus,
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| muscle tone | skeletal muscles kept partially contracted
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| tendons | connect muscles to bone
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| ligaments | connect bone to bone
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| myofibrils | make up muscles fibers
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| filaments | make up myofibrils
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| myosin | thicker filament
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| octin | thinner filament
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| sarcomere | filaments arranged in them, seperated by Z lines
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| motor neurons | connect nervoud system to skeletal muscle
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| neuromuscular junction | point of contact between motor neurons and a muscle cells
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| acetylcholine | travel between motor neurons and muscle cells
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