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Human Body

human body systems and organs

circulatory system transports materials around the body
capillaries tiny blood vessels of the circulatory system that help with gas exchange and nutrient absorption
respiratory system exchanges gases between the body and environment; helps with breathing
alveoli small air sacks in the lungs that help with gas exchange
gas exchange oxygen and carbon dioxide cross between the alveoli of the respiratory system and capillaries of the circulatory system
cellular respiration glucose + oxygen --> ATP + water + carbon dioxide (how cells make cellular energy - ATP)
breathing inhaling oxygen and exhaling carbon dioxide
levels of organization cells -> tissues -> organs -> organ systems -> organism
excretory system removes wastes from the body
kidney organs of the excretory system that filter wastes from the blood
muscular system allows the body to move
nervous system controls the body's actions and allows it to respond to stimuli in the environment
digestive system breaks down food into usable nutrients
homeostasis maintaining a stable internal state or environemtn
circulatory and respiratory systems work together to perform gas exchange - gases cross between the alveoli and capillaries
circulatory and digestive systems work together to absorb nutrients from food - nutrients are absorbed into the bloodstream in the small intestine
circulatory and excretory systems work together to remove wastes from the blood - the kidneys filter wastes out of the blood
process of digestion food is eaten -> broken down into nutrients -> atoms are rearranged -> energy is released
examples of homeostasis sweating to cool your body when you exercise, breathing faster to bring in more oxygen for cells to use to make energy
stimuli an internal or external change that causes a response
arteries carry blood away from the heart
veins carry blood toward or into the heart
small intestine contains villi and absorbs nutrients that cross into the blood stream
absorption of nutrients nutrients are absorbed by the small intestine of the digestive system and cross into the capillaries of the circulatory system
Created by: skoehler



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