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How Environmental Factors Impact the Human Body Systems: A Comprehensive Overview

This article explores how various environmental factors affect the human body's systems, including the respiratory, digestive, integumentary, circulatory, lymphatic, nervous, urinary, and reproductive systems. It discusses the impact of airborne contaminants such as particulate matter, carbon monoxide, and pathogens, as well as the effects of food and liquid contaminants on the digestive system. The piece also highlights risks associated with workplace chemicals and environmental pollutants. Understanding these interactions is vital for promoting health and mitigating risks.

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How Environmental Factors Impact the Human Body Systems: A Comprehensive Overview

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  1. How The Human Body Reacts to Environmental Factors

  2. Respiratory System • Reacts to airborne contaminants • Major: • Particulate matter • Carbon monoxide (CO) • Sulphur dioxide (SO2) • Hydrocarbons • smog

  3. Respiratory System • Other air-borne contaminants: • VOC’s • Workplace chemicals • Pesticides • Pathogens • Ionizing radiation • Causes atoms to expel electrons and become ions • Fly frequently, work in nuclear energy or with x-rays, lasers • http://www.youtube.com/watch?v=i9dW0k4afCI&NR=1&feature=fvwp Healthbeat - Children & Air Pollution

  4. Digestive System • Reacts to contaminants in foods and liquids • Heat and stress may also affect it

  5. Digestive System • Many digestive system diseases cause by pathogens • Example: 2008 Listeriosis outbreak across Canada • Unclean meat processing plant equipment

  6. Integumentary System • Workplace and household solvents can be absorbed and irritate skin • Example: bleach = burns skin • can be absorbed into blood stream and carried to rest of body

  7. Integumentary System • Environmental factors • Hot and cold • UV Rays or ionizing radiation can cause Melanoma (skin cancer) • Poison Ivy = skin rash

  8. Circulatory and Lymphatic System • Lymphatic system (immune system): glands, nodes • Leucocytes (white blood cell) protect against pathogens (not all) • Single cell animals (protozoan's, parasites') often survive • Malaria (protozoan) – infected mosquitoe bites • Ionizing radiation and chemicals

  9. Circulatory and Lymphatic System • Lymphatic system filters out bacteria and wastes – through lymph nodes and spleen • Lymphocytes (specialized WBC) also do this ~ ionizing radiation and chemicals can damage lymphocytes

  10. Nervous System • Brain, spinal cord, nerves • Brain and spinal cord = central nervous system (CNS) • Nerves and pathways = peripheral nervous system (PNS)

  11. Nervous System • Peripheral nervous system (PNS) sends impulses to CNS indicating feeling • pleasure, touch, pain, hunger, thirst, sound, smell, sight, and other stimuli • CNS responds by sending command back to muscles, glands, organs in how to respond • Ie. Touch something hot = tells arm to pull away • http://www.youtube.com/watch?v=62dVw7QQVJ8&NR=1Lead Poisoning in Kids

  12. Nervous System

  13. Urinary and Reproductive Systems • Urinary: rid body of wastes • Kidneys filter blood to remove wastes – excrete urine – bladder – emptied • Both vulnerable to environmental contaminants • Bladder infections/kidney infections

  14. Urinary System

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