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25 Cards in this Set
- Front
- Back
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Skeletal System
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The structure of bones and cartilage of the body
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How many bones are in the body?
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over 200 bones are in the body.
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Bones
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Support the body and protect the other body systems
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Cartilage
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-Tough, elastic whitish tissue
-Flexible tissue -Foung in nose, ears, and joints |
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Marrow
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-Spongy material inside of bones
-Site of Red Blood Cell production |
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How many Red Blood Cells are made each second?
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-The Bone Marrow produces over 2 million red blood cells each second.
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Joint
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-Place where bones come together
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Immovable Joints
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-Some joints cannot move
-Example, joints found in the skull |
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Ligaments
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-Tough ropes that hold bones together
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Sprain
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-Injury to a ligament when too much pressure is put on a ligament.
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What French surgeon used wood and metal to replace lost arms and legs?
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- Ambroise Pare
-In the 1500's |
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Types of Surgery to the skeletal system
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-Old joints can be replaced with an artificial steel joint
-Artificial tendons, ligament, and bones are used today -some parts are temporary and will dissolve inside the body as the body heals |
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Muscles
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-Serve to work the bones
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Tendons
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-Thick bands of connective tissue that connect bones to muscles
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Muscle Contraction
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-When muscles become shorter
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Muscle Relaxation
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-When muscles become longer
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Contraction and Relaxation of muscles ...
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-pull on the bones in a way to make movement possible.
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The most important muscle in the body?
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-The Heart
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The muscles of your arm work in _____ to cause movement.
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-Pairs
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Muscles make up parts of various other systems:
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-Digestive System
-Circulatory System -Reproductive System |
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Muscle Cells
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-differ depending on the function of the particular muscle
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All muscles move by .....
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-contracting
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What system controls the muscles of the body?
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-Nervous system
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How do muscles work in pairs to move bones?
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-Wnen one muscle relaxes, the other contracts
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Joints
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-Connects bones to each other
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