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15 terms

Sci Ch 3 - 8th

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Minerals
INORGANIC SUBSTANCES that are involved in many of the body's chemical reactions
Organic Compounds
COMPOUNDS containing CARBON with few exceptions
Cell
The SMALLEST FUNCTIONAL UNIT in an organism
Tissue
GROUPS OF SIMILAR CELLS that do the same sort of work
Organ
A STRUCTURE MADE UP OF DIFFERENT TYPES OF TISSUES that work together
Organ System
A GROUP OF ORGANS that work together to do a certain job
Digestion
The BREAKDOWN OF FOODS you eat into smaller and simpler molecules that can be used by the cells in your body
Enzyme
A PROTEIN that helps the body carr out CHEMICAL REACTIONS
Villi
TINY FINGERLIKE projections
Absorption
PROCESS in which FOOD MOLECULES PASS through the walls of the Villi and into the BLOODSTREAM
Cellular Respiration
A SERIES of CHEMICAL PROCESSES in which OXYGEN COMBINES WITH FOOD MOLECULES and ENERGY IS RELEASED
Alveoli
In the LUNGS, the TINY, THIN-WALLED sacs surrounded by capillaries where EXCHANGE OF OXYGEN & CARBON DIOXIDE takes place
Excretion
The REMOVAL of WASTE PRODUCTS
Homeostasis
PROCESS when a body MAINTAINS STABLE INTERNAL ENVIRONMENT
Negative Feedback
Mechanism that helps the body CHANGE INTERNAL CONDITION and RETURN TO NORMAL STATE