14.1 Body Organization & 14.2 Bones
About this set
Created by:
ncorliss on December 31, 2010
Subjects:
biology, life science, human body
Description:
Science Explorer Life Science
Chapter 14 Bones, Muscles and Skin
14.1 Body Organization and Homeostasis
14.2 The Skeletal System
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22 terms
Terms | Definitions |
|---|---|
 cell | the basic unit of structure and function in living things |
| cell membrane | the outside cell boundary that controls which substances can enter or leave the cell |
| nucleus | The control center of a eukaryotic cell that directs the cell's activities and contains the information that determines the cell's form and function. |
| cytoplasm | the material within a cell apart from the nucleus |
| tissue | group of similar cells that perform a particular function |
| muscle tissue | A body tissue that contracts or shortens, making body parts move. |
| nervous tissue | A body tissue that carries electrical messages back and forth between the brain and every other part of the body. |
| connective tissue | a body tissue that provides support for the body and connects all of its parts |
| epithelial tissue | a body tissue that covers the surfaces of the body, inside and out |
| organ | a structure in the body that is composed of different kinds of tissue |
| organ system | group of organs that work together to perform a major function in the body |
| homeostasis | the maintenance of stable internal conditions in an organism |
| stress | the reaction of a person's body to potentially threatening, challenging, or disturbing events |
| skeleton | the inner framework made up of all the bones of the body |
| vertebrae | the small bones that make up the backbone |
| joint | A place in the body where two bones come together |
| ligament | strong connective tissue that holds bones together in movable joints |
| cartilage | A connective tissue that is more flexible than bone and that gives support to some parts of the body |
| compact bone | Hard, dense bone tissue that is beneath the outer membrane of a bone |
| spongy bone | Layer of Bone tissue having many small spaces and found just inside the layer of compact bone |
| marrow | the soft connective tissue that fills the internal spaces in bone |
| osteoporosis | a condition in which the body's bones become weak and break easily |
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