science vocab on skeletal, muscular, integumentary, respiratory systems
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| skeletal system | bones, cartilage, and the structures that connect bones to cartilage.
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| compact bone | the bone tissue that does not have any visible open spaces.
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| spongy bone | bone tissue that has many open spaces.
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| cartilage | the flexible tissue beneath your skin.
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| joint | the place where two or more bones connect.
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| osteoblasts | bone is made of connective tissue and minerals that are deposited by living cells.
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| marrow | bones contain soft tissue.(inside bone)
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| muscular system | made up of muscels and connective tissue that attaches the muscle to the bnes.
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| smooth muscle | one of three types of bone in its system and moves food through the digestive system.
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| cardiac muscle | one of three types of muscle in its system and pumps blood around your heart.
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| skeletal muscle | one of three types of muscle in its system that is attached to your bones for movement, and enables bones to move.
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| voluntary musle control | muscle action that is under your own control.
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| involuntary muscle control | muscle action that is not under your own control.
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| tendons | connect your skeletal muscles to your bone.
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| flexor | when a muscle bends part of your body.
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| extensor | when a muscle straightens part of your body.
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| tendinitis | when a damaged tendon becomes inflamed as your body tries to repair itself.
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| integumentary system | your skin, nails and hair make up this system. it also keeps your body healthy.
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| sweat glands | make sweat.
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| melanin | in the upper layer of the skin and determines skin color.
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| epidermis | the thinner layer of skin.
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| dermis | the deeper, thicker layer of skin.
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| keratin | helps make the skin tough.
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| collagen | the dermis has fibers made of protein and that protein is this word.
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| blood vessel | transport substances and help regulate body temperature.
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| nerves | carry messages to and from the brain.
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| hair follicles | in the dermis produce hairs.
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| muscle fibers | attached to a hair follicle can contract and cause the hair to stand up.
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| oil glands | release oil that keeps hair flexible and helps waterproof the epidermis.
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| nail roots | under the skin at the base and sides of nails.
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| respiratory system | a collecton of organs whose primary function is to take in oxygen and expel carbon dioxide.
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| nose | primary passage-way into and out of the respiratory system.
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| pharynx | the upper peotion of the throat.
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| eppiglottis | a structure that hangs at the entrance of the larynx and prevents food from entering the larynx and the trachea while swallowing.
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| larynx | your voice box.
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| trachea | your windpipe.
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| bronchi | two tubes that split the trachea.
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| branchioles | thousands of tiny tubes that branch off of the bronchi and go to the lungs.
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| alveoli | tiny air sacs.
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| diaphragm | a dome-shaped muscle underneath the lungs.
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| lungs | the central organ of the respiratory system in which oxygen from the air is exchanged with carbon dioxide from the blood.
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