overview of body systems
Post on 11-Jul-2015
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Overview of Body Systems
Body Systems
• Body systems are organ systems within the body that work together to help the organism grow, develop, and maintain homeostasis.
• They include:– Integumentary system– Digestive system– Nervous system– Reproductive system– Muscular system– Skeletal system– Renal system– Respiratory System– Circulatory system
Integumentary system
• Protects the body against damage and water loss, regulates body temperature, removes wastes, senses things
• Contains:– Skin – largest organ in the body
– Hair or fur
– Scales
– Feathers
– Nails
– Hooves
Digestive System• Breaks down food for use by
the body• Contains
– mouth– Esophagus– Stomach– Spleen– Liver– Pancreas– Small intestine– Large intestine– Rectum
• Food particles are absorbed into the blood and travel throughout the body.
• Removes waste
Nervous system
• Coordinates all movement and sensory information for the entire body
• Controls, interprets, and reacts
• Contains:
– Brain
– Spinal cord
– All other nerves
Reproductive System
• Contains sex organs and glands that influence gender, reproduction, maturity, and all changes that happen in the body during adolescence.
• Female – ovaries, fallopian tubes, uterus, vagina
• Male – testes, penis, urethra, prostate
Muscular system
• Responsible for all movement of the body
• Controlled by the nervous system
• Contains all muscles within the body, including:– Skeletal muscles
– Heart (cardiac muscles)
– Smooth muscles (in digestive and other systems)
Skeletal system
• Provides structure and protection for the body
• 206 bones in a human adult
• Contains all bones in the body
Renal system
• Removes waste from the body
• Regulates blood volume, blood pressure, controls electrolyte levels, regulates blood pH
• Contains:– Kidneys– Ureters– Bladder– urethra
Respiratory system
• Regulates the intake and exchange of Oxygen and Carbon Dioxide
• Contains:
– Lungs
– Trachea
– Diaphragm
– Mouth and nose
Circulatory system
• Circulates blood throughout the body
• Transports nutrients to every part of the body
• Contains:– Heart
– Veins
– Arteries
– capillaries
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