• List the organ systems of the human body and their major components. 1.) Integumentary system: skin and nails. 2.) Skeletal system- bones 3.) Muscular system- tendons/muscles 4.) Lymphatic system- thymus and the spleen. 5.) Nervous system- brain and spinal cord 6.) Cardiovascular system- heart and blood vessels 7.) Endocrine system- pituitary gland, hypothalamus 8.) Digestive system- stomach and liver. 9.) Reproductive system- Penis and ovaries 10.) Urinary system- ureter and kidneys 11.) Respiratoryyyyyy system- lungs and trachea.

• Describe the major functions of each organ system. 1.) Integumentary system- skin and nails- major functions- protection, regulates body temperature. 2.) Skeletal system- provides protection, site of muscle attachment, location for new blood cell production. 3.) Muscular system- Movement and provides heat when muscles contract. 4.) Digestive system- Chemical and mechanical breaks down food into energy. Rids body of waste. 5.) Urinary system- Filters blood and rids body of waste in form of urine. 6.) Reproductive system- male/female sex organs. 7.) Nervous system- Receives and processes stimuli. 8.) Respiratory system- gas exchange- oxygen and carbon dioxide. 9.) Cardiovascular system- transports necessary hormones, nutrients, etc throughout body as well as waste. 10.) Endocrine system- releases hormones responsible for growth and development, controls metabolism. 11.) Lymphatic system- Transports lymph throughout the body; responsible for immune response when necessary. Thymus and spleen. 12.) Define homeostasis.
Body’s ability to maintain a relatively stable internal environment despite changing internal or external conditions. 13.) • List the components of a feedback loop and explain the function of each. Receptor-detects changes