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Human Systems Interactions - Inv. 1 and 2

Name ________________________________
Date ________________  HR _____________
Across
Indicator that something is wrong in the human body
System responsible for eliminating waste
Group of organs working together to perform complex functions
System that gives shape to the body and allows it to move
An energy source we obtain by eating food
The process by which plants make their own food
`system that stores and releases hormones
Group of different kinds of tissues
System that processes food in the body
Tiny air sacs in the lungs which perform gas exchange
A particle that is made up of two or more smaller particles; held together by chemical bonds
Smallest blood vessel where substances are exchanged between red blood cells
Down
Group of related kinds of cells working together to perform a specific function
System of blood vessels
The basic unit of life
The smallest unit of matter; the basic unit of a chemical element
System that transports oxygen to the body and gets rid of carbon dioxide
Identification of a disease
System of bones that provide structure to the body
System that controls all the activity inside the body