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Unit 3 Part A

Bone, Muscle, Skin

Voluntary Muscle Muscle controlled by choice (skeletal muscle).
Involuntary Muscle Muscles that are not under your control. Regulated by the brain stem (cardiac and smooth muscle).
Tendon Connective tissue that connects muscle to bone.
Ligament Connective tissue that holds bones together across joints.
Bone Marrow Tissue inside bones. Red marrow produces blood cells, yellow marrow stores fat.
Cartilage Flexible tissue that is smooth and cushions joints. Found at the end of bones in joints, the ears and nose.
Sprain Damage to a ligament from being stretched or torn.
Dermis Thick lower layer of skin that contains blood vessels, nerves and glands.
Epidermis Thin upper layer of skin protects the body from infection.
Compact bone Rigid outer layer of bone provides strong support.
Spongy bone Layer of bone that contains many spaces to hold bone marrow.
Ball and Socket joint Allow bones to rotate in a circle (shoulder and hip).
Hinge joint Allow bones to move back and forth like door hinges (knee and elbow).
Gliding joint Allow bones to slide across each other in many directions (wrists and ankles).
Pivot joint Allow bones to twist in place (neck and radius)
Osteoporosis Disease that causes bone tissue to thin and become weak and break easily.
Arthritis Disease that causes pain in joints from damage to cartilage.
Cardiac muscle Muscle that makes up the heart. This muscle does not get tired like skeletal muscles.
Smooth muscle Surrounds internal organs and blood vessels. Moves food through the digestive system and blood through arteries.
Skeletal muscle Muscle attached to bones; work in pairs to move bone by contracting and relaxing. One muscle straightens the other bends.
Strain Damage to muscle when it is stretched or torn.
Created by: johnsona



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