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Body Systems Review

Explore the functions and pathways of the circulatory, excretory, nervous, and immune systems with detailed explanations and diagrams.

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Body Systems Review

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  1. Body Systems Review Circulatory, Excretory, Nervous, Immune

  2. Red Blood Cells • Transport Oxygen attached to Hemoglobin • https://www.youtube.com/watch?v=4GUYdaM3QIY

  3. White Blood Cells • Fight diseases/infections

  4. Platelets • Clot blood and repair injuries https://www.youtube.com/watch?v=_yQD0U3ZtCs

  5. Liquid Portion of Blood • Plasma • Composed mostly of… • Water

  6. ARTERIES • Carry oxygen-rich blood AWAY from the heart to the tissues in the body

  7. VEINS • Carry oxygen-poor blood and carbon dioxide CO2 back TO the heart Valves -prevent the backflow of blood since there is no pressure in veins

  8. Capillaries • Where O2 and nutrients are exchanged between the blood and cells of body tissues. • This exchange is called _______. • diffusion

  9. Blood Flow Through Heart • Vena Cava -> Rt. Atrium -> Rt. Ventricle-> __________________>Lungs-> ___________________ -> Lft. Atrium -> Lft. Ventricle -> Aorta-> • Pulmonary Artery • Pulmonary Vein • http://www.youtube.com/watch?v=mH0QTWzU-xI&feature=related

  10. Anemia https://www.youtube.com/watch?v=_ZV5140OykE • Low RBC Count • Patients have decreased • energy • Why? • Decreased amount of____to cells • Oxygen or O2

  11. Blood Types

  12. Blood Types • Universal Donor • Type O

  13. Blood Types • Universal Recipient • Type AB • No Antibodies present

  14. The Excretory System Function: • Filters the blood of excess waste. • Eliminates wastes through diffusion or osmosis. - Regulates proper watervolume.

  15. The Excretory System

  16. The Excretory System Organs involved: -Kidneys: -Contain units called nephrons which do the filtering. -Ureters: -Connect kidneys to bladder -Bladder: -Stores Urine -Urethra: -Urine passes out of the body Pathway of Urine: Kidney -> Ureter -> Bladder -> Urethra

  17. Nephron Activities ( 3 steps) • Filtration • Water, Salts, Glucose, Urea, and Vitamins are filtered out of blood • RBC’s, WBC’s, and Platelets (too large to filter out) remains in the blood. https://www.youtube.com/watch?v=fXAtf_C7nJM

  18. Nephrons • Filtering units inside the kidneys • Where filtration occurs

  19. Nephron Activities ( 3 steps) • Reabsorption • Salts, vitamins, glucose, water (materials your body needs) get reabsorbed back into the blood.

  20. Nephron Activities ( 3 steps) 3) Excretion -The wastes your body doesn’t need gets excreted as urine.

  21. The Nervous System

  22. The Nervous System 1) Central Nervous System -Brain -Spinal Cord • Peripheral Nervous System -Nerves coming from Brain and Spinal Cord

  23. Brain/Function ****** 1. Cerebrum- intelligence and memory 2. Cerebellum- balance, posture, and coordination 3. Medulla Oblongata- controls involuntary movements. -breathing -heart rate

  24. What is the function of a neuron (nerve cell)?******** • Dendrites: • receives stimuli • Cell body: • includes a nucleus (control center) • Axon: • carry messages to next dendrite.

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