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chapter 14 section 1
section 1
25
Science
7th Grade
09/14/2011

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Term
cell
Definition
A cell is a basic unit os structure and function in a living thing
Term
tissue
Definition
A group of similar cells that preform the same function
Term
Muscle tissue
Definition
Contracts and shortens
Term
Nervous tissue
Definition
direcs and contracts
Term
Conective tissue
Definition
provides support for your body
Term
Epithilial tissue
Definition
A tissue that covers your body
Term
Organs
Definition
A structure composed of different types of tisue that work together
Term
Organ System
Definition
a Group of organs that work toghether to preform a function
Term
Homeostasis
Definition
The body's tendancy to keep an internal balance
Term
stress
Definition
A reaction of your body
Term
Five major functions of bones
Definition
1. Shape and support
2.Protects you internal organs
3.Major muscles are attached to your bone
4.Blood cells are formed in the marrow are formed in the center of the bone
5.calcium and phosophere compunds are stored in the vertabrea
Term
Compact bone
Definition
Hard dense bone tissue that is benath the outer membrane of the bone
Term
Spongy Bone
Definition
layer of bone tissue having many small spaces and found just inside the layer of compact bone
Term
Red marrow
Definition
the active marrow it makes all the red blood cells and most white ones
Term
yellow marrow
Definition
fouund in the longer bones is fat
Term
Carthige
Definition
a rubbery layer of tissue found at the end of the bone where they form joints. Carthage acts as a shock obsorber
Term
Osteoblasts
Definition
Build up the bone
Term
Osteoclasts
Definition
break down the bone
Term
joints
Definition
any place where two or more bones come toghether
Term
Tendon
Definition
Strong elastic band of tissue that connects muscle to bone
Term
eigement
Definition
a tissue band that holds bone to bone
Term
Immovable joint
Definition
1. allow little or no movement
2.Example: joints of the skull
Term
piviot joint
Definition
one bone roates around another bone
Term
Ball and socket joint
Definition
the round ed part of one bone fits into a cuplike other bone
Term
Gliding joint
Definition
one part of the bone slides on another
example wrists
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