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7.18 Mrs Jensen
Bones, Muscles, and Skin
18
Science
7th Grade
09/14/2011

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Term
skeletal system

7.18
Definition
all the bones in the body
Term
marrow

7.18
Definition
fatty, soft tissue in the center of long bones and the paces of spongy bones
Term
periosteum

7.18
Definition
tough, tight-fitting membrane that covers the surface of bones
Term
cartilage

7.18
Definition
thick, slippery tissue layer covering the ends of bones
Term
joint

7.18
Definition
the place where two or more bones meet
Term
ligament

7.18
Definition
the tough band of tissue that holds bones together at joints
Term
immovable joint

7.18
Definition
a type of joint that allows little or no movement
Term
movable joint

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Definition
a type of joint that allows a wide range of movements
Term
muscle

7.18
Definition
an organ that relaxes and contracts to allow movement of bones and body parts
Term
voluntary muscle

7.18
Definition
the muscles, such as face muscles, that can be consciously controlled
Term
involuntary muscle

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Definition
the muscles, such as cardiac muscles, that can't be consciously controlled
Term
skeletal muscle

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Definition
striated, voluntary muscles that move bones
Term
tendon

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Definition
the thick band of tissue that attaches muscle to bone
Term
smooth muscles

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Definition
nonstriated, involuntary muscles that move many internal organs
Term
cardiac muscle

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Definition
striated, involuntary muscle that is found only in the heart
Term
epidermis

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Definition
the outer layer of the skin
Term
melanin

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Definition
the pigment that gives skin its color
Term
dermis

7.18
Definition
a layer of tissue beneath the epidermis
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