1 / 15

The Immune and Integumentary Systems

The Immune and Integumentary Systems. How we protect our bodies…. Pathogens. Microscope organisms are everywhere Luckily MOST are not harmful Microscope organisms are everywhere Disease causing microorganisms are called pathogens. The Immune System.

hye
Download Presentation

The Immune and Integumentary Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Immune and Integumentary Systems How we protect our bodies….

  2. Pathogens • Microscope organisms are everywhere • Luckily MOST are not harmful Microscope organisms are everywhere • Disease causing microorganisms are called pathogens

  3. The Immune System • How does our body protect itself from pathogens? • The immune system • Nonspecific defenses • Immune response

  4. Nonspecific defenses • With nonspecific defenses the body does NOT target particular pathogens • The first lines of defense are your SKIN and mucous membranes! • If a wound occurs an inflammatory response may occur and an increase in temperature • Histamines cause blood vessels to dilate (swelling can occur) • Blood flow to the area increase so white blood cells can attack pathogens • The body temperature rises…most pathogens only grow in a particular temperature range (close to NORMAL body temperature)

  5. White blood cells • Pathogens carry antigens which the body recognizes as an invader • Three kinds of white blood cells that attack invading pathogens (there are more): • Neutrophils - engulf and destroy pathogens …when they engulf the bacteria, they release a chemical to kill the bacteria, it also kills the neutrophil • Macrophages – ingest/kill pathogens & remove dead cells/other debris from the body • Killer T cells - large white blood cells-attack cells that are infected with pathogens to prevent spreading

  6. Neutrophils – kamakazi pilots Macrophages – pacman Killer T cells - snipers

  7. The immune response • If an invading pathogen is not destroyed by the nonspecific defenses…the immune response kicks in… • It is a series of invents that targets specific pathogens

  8. What was our first line of defense again? • The skin!!! • The skin is your largest organ • The skin along with your hair and nails make up the integumentary system

  9. The Layers of the Skin • Epidermis - outermost layer…dead skin that makes skin tough and waterproof • Dermis - made only of living cells…nerve cells, muscle cells, blood vessles, skin cells, hair folicles • Subcutaneous tissue - mostly fat, acts as a shock absorber, insulation, stores energy and anchors the skin to the organs/muscle below

  10. Relationships • What body system is important in carrying white blood cells? • Circulatory system • Which body system(s) is(are) protected by the immune system? • ALL of them!!! • How are the immune and integumentary systems closely related? • The skin is our first line of defense against infections. • If something happened to our skin and we were no longer waterproof, how might this affect the circulatory system? • As we lose water, our blood will become thicker…it is mostly water!

More Related