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Grade 8 CH 3

Interactions of Human Systems

QuestionAnswer
A process in which food molecules pass through the walls of the villi and into the bloodstream. ABSORPTION
Tiny thin walled sacs in the lungs. ALVEOLI
The smallest functional unit of an organism. CELL
A series of chemical processes when oxygen combines with food molecules & energy is re-leased. CELLULAR RESPIRATION
The breakdown of food into smaller & simpler pieces. DIGESTION
A protein that helps the body carry out chemical reactions. ENZYME
The removal of waste products. EXCRETION
The body maintains a stable internal environment. HOMEOSTASIS
Inorganic substances that are involved in many of the body’s chemical reactions. MINERAL
The body changes an internal condition back to its normal state. NEGATIVE FEEDBACK
A structure made up of different types of tissues that work together. ORGAN
Group of organs that work together to do a certain job. ORGAN SYSTEM
These contain carbon such as nucleic acid, proteins, carbohydrates, & lipids. ORGANIC COMPOUND
Groups of similar cells that do the same sort of work. TISSUE
The fingerlike tiny projections that line the small intestine. VILLI
Created by: Bridgerdon
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