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Chapter 14 Term
Science Terms
Term | Definition |
---|---|
Cell | Is the basic unit of structure and function in a living thing. |
Cell Membrane | Form the outside boundary of the cell. |
Nucleus | Is the control center that directs the cell's activities and contains the cell's form and function |
Cytoplasm | The material within a cell apart from the nucleus |
Tissue | Is a group of similar cells that perform the same function |
Muscle Tissue | Can contract or shorten |
Nervous Tissue | Directs and controls the process |
Connective Tissue | Provides support for your body and connects all its parts |
Epithelial Tissue | Surfaces of your body, inside and out, are covered |
Organ | Is a structure that is composed of different kinds of tissue |
Organ System | A group of organs that work together to perform a major function |
Homeostasis | The body's tendency keep an internal balance |
Stress | Is the reaction of your body to potentially threatening, challenging , or disturbing events |
Skeleton | Is made up of all the bones in your body |
Vertebrae | That make up your backbone |
Joint | Is a place in the body where two bones rather than fewer large ones |
Ligaments | Movable joints are held together by strong connective tissue |
Cartilage | Joints have a second type of connective tissue |
Compact Bone | The outer membrane is a layer which is hard and dense, but not solid |
Spongy Bone | Has many small spaces within it |
Marrow | The spaces in bones contain a soft, connective tissue |
Osteoporosis | A condition in which the bones body's become weak and break easily |
Involuntary Muscle | The muscles that are not under your conscious control |
Voluntary Muscle | The muscles that are under your conscious control |
Skeletal Muscle | Are attached to the bone of your skeleton and provide the force that moves your bones |
Tendon | Is a strong connective tissue that attaches muscle to bone |
Striated Muscle | A muscle that appears banded |
Cardiac Muscle | Is found only in your heart |
Epidermis | Is the outer layer of the skin |
Melanin | A pigment, or colored substance, that gives skin its color |
Dermis | Is the inner layer of the skin |
Pores | An opening through which sweat reaches the surface of your skin |
Follicles | Structure in the dermis of the skin from which a strand of hair grows |