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Introduction to Introduction to Human Body SystemsHuman Body Systems
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Circulatory systemCirculatory system
► Role: Transports Role: Transports substances substances throughout the throughout the bodybody
► Circulates oxygen, Circulates oxygen, CO2 heat, water, CO2 heat, water, nutrients, wastesnutrients, wastes
►Major organs: Heart, Major organs: Heart, Arteries, Veins Arteries, Veins
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Excretory SystemExcretory System► Role: Filters wastes Role: Filters wastes
from blood; from blood; maintains bodies maintains bodies internal nutrient internal nutrient balancesbalances
► Also rids body of Also rids body of wastes via urethrawastes via urethra
►Major organs: Major organs: Kidneys, Urethra, Kidneys, Urethra, BladderBladder
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Digestive SystemDigestive System► Role: Breaks down Role: Breaks down
macromolecules macromolecules and absorbs and absorbs necessary nutrientsnecessary nutrients
► Major organs: Major organs: Stomach, L.I., S.I.Stomach, L.I., S.I.
► Liver serves Liver serves multiple functions multiple functions for multiple for multiple systems (but is systems (but is considered part of considered part of DS)DS)
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Reproductive SystemReproductive System
► Role: Producing Role: Producing offspring; regulating offspring; regulating sexual sexual characteristicscharacteristics
►Major organs: Major organs: Testes, Uterus, Testes, Uterus, OvariesOvaries
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Skeletal SystemSkeletal System
► Provides body Provides body structure and supportstructure and support
► Bone marrow creates Bone marrow creates new blood cells for new blood cells for circulation;also stores circulation;also stores lipidslipids
►Major organs: bones, Major organs: bones, cartilagecartilage
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Muscular SystemMuscular System
► Role: allows for Role: allows for movementmovement
►Major organs: Major organs: skeletal muscleskeletal muscle
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Nervous SystemNervous System
► Control system of Control system of bodybody
►Major organs: Brain, Major organs: Brain, Spinal cord, nervesSpinal cord, nerves
► Stimulates heart Stimulates heart rate and controls rate and controls blood oxygen levelsblood oxygen levels
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Integumentary SystemIntegumentary System
► Role: Protects body; Role: Protects body; transfer of heat; transfer of heat; sensory receptionsensory reception
►Major organs: skin, Major organs: skin, nailsnails
► Releases sweat, and Releases sweat, and heat from blood, to heat from blood, to help control body help control body temperature temperature
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Endocrine SystemEndocrine System► Role: Circulates Role: Circulates
hormones around the hormones around the body to control body body to control body functions; maintains functions; maintains homeostasishomeostasis
►Major organs: Major organs: Pituitary, Thyroid, Pituitary, Thyroid, Adrenals, Adrenals, Pancreas,hypothalmuPancreas,hypothalmuss
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Lymphatic SystemLymphatic System
► Role: Works to help Role: Works to help maintain ciculatory maintain ciculatory system as well as system as well as housing cells housing cells responsible for responsible for immunityimmunity
►Major organs: Major organs: Lymph nodesLymph nodes
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Respiratory SystemRespiratory System
► Ventilation system Ventilation system for bodyfor body
►Major organs: lungs, Major organs: lungs, diaphragm, tracheadiaphragm, trachea
► Takes in oxygen Takes in oxygen and releases carbon and releases carbon dioxide from blooddioxide from blood