Science Body Vocab. chap. 1 sec.1,2,&3
Terms
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- cell
- The basic unit of structure and function in a living thing
- cell membrane
- the outside boundary of a cell
- nucleus
- the control center of a cell that directs the cell's activities and contains information that determines the cell's characteristics
- cytoplasm
- the area in a cell between the cell membrane and the nucleus; contains a clear, jelly like substance in which cell structures are found
- tissue
- a group of similar cells that perform the same function
- muscle tissue
- the body tissue that contracts and shortens, making body parts move
- nerve tissue
- a body tissue that carries 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 itss 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 systems
- a group of organs that work together to perform a major function in the body
- homeostasis
- the process by which an organism's internal enviroment is kept stable in spite of changes in the external enviroment
- stress
- the reaction of a persons body and mmind threatening, challenging, or disturbing events
- adrenaline
- a chemical that gives a burst of energy and causes changes in the body to prepare a person for quick action
- wellness
- the state of being at the best possible level of health- in the body, the mind, and the relationships with others
- physical health
- a component of wellnes that consists of how well the body functions
- mental health
- a component of wellness that involves a person's feelings or emotions
- peer pressure
- the pressure from friends and classmates to behave in certian ways
- continuum
- a gradual progression through many stages between one extreme and another, as in the illness-wellness continuum