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body systems

chapter 1

level/systemdefinition
chemical level,atoms the smallest of matter that participate in chemical reactions
cellular level,cells the basic structural and functional units of an organism that are composed of chemicals
tissue level,tissues groups of cells and the materials surrounding them that work together to perform a particular function
organ level,organs structures that are composed of two or more different types of tissues
system level,system related organs with common functions
organismal level,organism all parts of the human body functioning together constitute the total organism
integumentary system protects the body,helps regulate body temperature,eliminates some waste,detects sensations such as touch,pain, warmth,and cold
skeletal system supports and protects the body,provides surface area for muscle attachments,aids in body movement
muscular system participates in body movements such as walking,maintains posture
nervous system regulate bodys activities,detects changes in bodys internal and external enviorments ,interprets changes and responds by causing muscular contractions or gland sucretions
endocrine system regulate sbodys activitiesby releasing hormones
cardiovascular system carries oxygen and nutrients to cells and carbon dioxide and wastes away from cells
lymphatic system returns proteins and fluid to blood,carries lipids from gastrointestinal tract to blood
respiratory system helps regulate acid base of body fluids,transfers oxygen from inhaled air to blood and carbon dioxide from blood to exhaled air
digestive system achieves physical and chemical breakdown of food,absorbs nutrients,eliminates solid wastes
urinary system eliminates wastes and regulates volume and chemical composition of blood,helps maintain the acid base balance of body fluids
reproductive system gonads produce gametes that unite to form a new organism
Created by: vpietruska
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