Overview of body systems
- 1. Overview of Body Systems
- 2. 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
- 3. 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
- 4. 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
- 5. Nervous system • Coordinates all movement and sensory information for the entire body • Controls, interprets, and reacts • Contains: – Brain – Spinal cord – All other nerves
- 6. 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
- 8. 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)
- 9. Skeletal system • Provides structure and protection for the body • 206 bones in a human adult • Contains all bones in the body
- 10. Renal system • Removes waste from the body • Regulates blood volume, blood pressure, controls electrolyte levels, regulates blood pH • Contains: – Kidneys – Ureters – Bladder – urethra
- 11. Respiratory system • Regulates the intake and exchange of Oxygen and Carbon Dioxide • Contains: – Lungs – Trachea – Diaphragm – Mouth and nose
- 12. Circulatory system • Circulates blood throughout the body • Transports nutrients to every part of the body • Contains: – Heart – Veins – Arteries – capillaries