The human body

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The human body

  1. 1. The Human Body Different Parts and their Functions
  2. 2. The Skeletal System <ul><li>Used for support and protection </li></ul><ul><li>Contain marrow to make blood cells and immune cells. </li></ul><ul><li>Can grow, repair and adapt to the environment </li></ul>
  3. 4. <ul><li>Soccer leg break </li></ul><ul><li>Soccer ankle break </li></ul>
  4. 5. Muscles <ul><li>There are 3 types of muscles in your body. </li></ul><ul><li>Skeletal muscles- move bones and are voluntary meaning you control the movement. They are striated or striped. </li></ul><ul><li>Smooth muscles- are involuntary meaning they go on their own and are found in organs, blood vessels and skin. They are not striated. </li></ul><ul><li>Cardiac muscle in found only in the heart and is involuntary. It has striations but are different than skeletal muscle. </li></ul>
  5. 7. stop Eyewitness Skeleton Skeleton/Muscle Label
  6. 8. Circulatory/Respiratory <ul><li>Circulatory is the heart, arteries and blood vessels in your body. </li></ul><ul><li>Respiratory are the lungs. </li></ul><ul><li>Both work closely together to move oxygenated blood throughout your entire body. </li></ul>
  7. 9. Circulatory/Respiratory <ul><li>Pharynx- filters dirt, dust and bacteria </li></ul><ul><li>Epiglottis- flap of tissue at the end of the pharynx that prevents food or liquid from getting into your lungs </li></ul><ul><li>Larynx- vocal chords are attached here and muscles move the chords </li></ul><ul><li>Trachea- tube lined with mucus and cilia that allows air to go into the lungs, lined with cartilage to keep it open always </li></ul>
  8. 10. Circulatory/Respiratory <ul><li>Lungs- cone-shaped organs filled with layers of spongy material. Has 3 lobes and can expand. </li></ul><ul><li>Bronchi- trachea splits into 2 tubes and these carry air </li></ul><ul><li>Bronchioles- each bronchi branches off into thousands of smaller tubes </li></ul><ul><li>Alveoli- tiny clusters of air sacs and oxygen diffuses from them into the capillaries into the bloodstream. Carbon dioxide diffuses from the capillaries back to the alveoli to be re-oxygenated. </li></ul><ul><li>Diaphragm- muscle that sits below the lungs and contracts and relaxes as you breathe. </li></ul>
  9. 16. Vocal chords moving
  10. 17. stop
  11. 18. Circulatory/Respiratory System <ul><li>The human heart has 4 chambers. </li></ul><ul><li>Two chambers hold deoxygenated blood and two chambers hold oxygenated blood. </li></ul><ul><li>The heart contains several valves that open and close allowing blood through the heart. </li></ul><ul><li>The aorta is the biggest and longest artery in the body. It is in the heart. </li></ul><ul><li>Arteries carry blood away from the heart and veins carry blood from the lungs to the heart. </li></ul>
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  13. 23. Digestive System <ul><li>Esophagus- tube in the throat that squeezes the food into the stomach </li></ul><ul><li>Stomach-bag like organ where food is digested </li></ul><ul><li>Small intestine- longest part of the digestive system,nutrients are absorbed </li></ul><ul><li>Large intestine- water is reabsorbed and waste is made </li></ul><ul><li>Salivary glands- there are 6 and help break down foods in the mouth </li></ul><ul><li>Liver- breaks down fats and processes nutrients. It also acts as a filter for wastes and toxins </li></ul><ul><li>Pancreas- produces enzymes to break down foods, also part of the endocrine system (produces insulin) </li></ul><ul><li>Gallbladder- stores the bile the liver produces and puts it into the small intestine, can be removed </li></ul>
  14. 28. stop
  15. 29. Lymphatic/Urinary System <ul><li>The urinary tract contains: </li></ul><ul><li>Ureters- tubes connecting the kidneys to the bladder </li></ul><ul><li>Bladder- elastic storage sac that holds the urine </li></ul><ul><li>Kidneys- one of each side of the body, all of the blood passes through the kidneys and is filtered and urine is made </li></ul><ul><li>Urethra- urine travels through this tube from the bladder and out of the body </li></ul>
  16. 33. Lymphatic/ Urinary System <ul><li>The lymphatic system carries fluid through your body and uses a system of vessels. </li></ul><ul><li>Helps fight off disease. </li></ul><ul><li>Contains lymphocytes (white blood cells) that fight infections. </li></ul><ul><li>Lymph nodes- bean shaped structures where foreign materials are filtered </li></ul><ul><li>Major lymph nodes are tonsils, thymus and spleen. </li></ul><ul><li>Lymph nodes swell up when you are sick. </li></ul>
  17. 37. stop
  18. 38. Organ Review <ul><li>You need to know the function, location and look of these major organs: </li></ul><ul><li>Heart-pumps blood </li></ul><ul><li>Lungs-removes oxygen from the air </li></ul><ul><li>Liver-filters toxins, processed food </li></ul><ul><li>Stomach-processes food </li></ul><ul><li>Kidneys-filters blood, makes urine </li></ul><ul><li>Brain-controls body </li></ul><ul><li>Small intestine-absorbs nutrients </li></ul><ul><li>Large intestine-absorbs water, creates waste </li></ul><ul><li>Bladder-hold urine </li></ul><ul><li>Pancreas-releases insulin to process sugar </li></ul><ul><li>Esophagus-swallows food </li></ul>
  19. 40. stop
  20. 41. Nervous/Endocrine Systems <ul><li>The endocrine system helps control the body by releasing hormones. </li></ul><ul><li>Hormones only work on specific tissues or organs. </li></ul><ul><li>Major glands of the endocrine system are: </li></ul><ul><li>Pituitary- master gland, controls other glands and controls the reproductive organs </li></ul><ul><li>Pancreas-produces insulin to control blood sugar levels </li></ul><ul><li>Thyroid- controls metabolism </li></ul><ul><li>Parathyroid- regulate levels of calcium and phosphate </li></ul><ul><li>Adrenal- creates adrenaline and 30 other hormones. </li></ul>
  21. 44. Nervous/Endocrine Systems <ul><li>The nervous system keep everything in homeostasis or balance. </li></ul><ul><li>The nervous system is divided into two parts: </li></ul><ul><li>Central nervous system-brain and spinal cord </li></ul><ul><li>Peripheral nervous system- all the other nerves in your body </li></ul><ul><li>Need to know the 3 main parts of the brain- cerebrum, cerebellum and medulla and their functions. </li></ul>

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