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list the two layers that form the skin
dermis, epidermis
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list two pigments found in human skin
carotene, melanin
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what stucture of the skin is responsible for the formation of fingerprints
papillae
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an area of thickened epidermis is called a___________
callus
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besides perspiration, what else does your skin do to keep you cool
blood vessels openwide to permit more blood to flow near the surface
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what is below the dermis that is not really a part of the skin
subcutaneous layer
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what is formed when the skin is exposed to intense heat or rubbed strongly before the epidermis has time to form a callus
blisters
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what protects your brain, eyes, and ears
skull
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what are some functions of the skeletal system
- 1. framework for support and movement
- 2. protection
- 3. storage of minerals
- 4. production of blood cells
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what are bands of connective tissue that connect muscles to bones
tendons
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tough, flexible bands of connective tissue that attach bones to other bones at joints
ligaments
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a place were two or more bones meet
joint
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what joints bend in only one direction
hinge joints
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what two minerals are especially important in giving bones their strength
calcium and phosphorus
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besides bone, what other tissue composes skeletons
cartilage
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muscles that you can controlat will are called________
voluntary muscles
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the muscles which move your skeleton are called___________
skeletal muscles
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muscles you cannot control are called______
involuntary muscles
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what organ has involuntary, striated muscle
heart
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which muscle is the longest in your body
sartorious
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when muscles__________, they produce heat
contract
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why is the skin considered a major defence against disease
it is a physical barrier agianst disease causing organisms
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which layer of skin contains hair follicles
dermis
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what is the best way to treat first-degree burns
run under cool water, then wrap a clean dry dressing
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how does your bone marrow affect your blood
blood cells are made in the bone marrow
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what is the name for the tough, white tissues that forms new bone tissue
periosteum
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what do you call the bands of connective tissue that connect muscle to bone
tendons
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what kind of joints do not allow movement
fused joints
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which kinds of muscles are striated
heart and skeletal muscle
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what metabolic processes supply the energy for muscles to contract
aerobic cellular respiration and sometimes anaerobic cellular respiration
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