The human body
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The human body

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The human body The human body Presentation Transcript

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