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LT 2a and 2b

Levels of Organization and Body Systems

TermDefinition
cell the smallest, most basic unit of life
tissue a group of cells working together to do a specific job
organ a group of tissues working together to do a specific job
organ system organs that have specific jobs and work together with other organs
organism organ systems working together to make a living thing
digestive system this system is responsible for digesting food and absorbing nutrients
respiratory system this system breathes in oxygen that the body needs and breathes out the waste carbon dioxide
cardiovascular system also known as the circulatory system - this system is responsible for transporting nutrients and waste throughout the body
excretory system also known as the urinary system - this system collects and removes waste from the body
muscular system this system allows the body the move and maintain posture
skeletal system this system supports and protects the body
nervous system this system includes the brain and spinal cord
immune system also known as the lymphatic system - this system protects the body from disease
internal happening on the INSIDE
external happening on the OUTSIDE
stimulus an internal or external change that causes a reaction
response the reaction to an internal or external change
homeostasis the ability of living things to maintain stable, internal conditions
nervous system this system collects stimulus from different parts of the body and controls the body's response
excretory system this system includes the kidneys, bladder, and colon
muscular system this system includes skeletal (biceps, gluteus maximus), cardiac (heart), and smooth (stomach, intestines) varieties
digestive system this system includes the stomach, liver, and intestines
skeletal system this system includes bones, joints, and ligaments
respiratory system this system includes the lungs and windpipe
cardiovascular system this system includes the heart, blood, veins, arteries, and capillaries
Created by: mrsbrownsc
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