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White Blood Cells
Anatomy Final
| Question | Answer |
|---|---|
| WBC Function | Defends body against invasion of pathogens and removes toxins, waste and abnormal or damaged cells |
| Where do you find WBC? | In the bone marrow |
| How much hemoglobin does WBC have and why? | No hemoglobin at all because they do not participate in oxygen transport |
| Amoeboid movement? | gliding motion accomplished by the flow of cytoplasm into slender cellular extensions |
| Diapedesis | they can migrate out of the bloodstream by squeezing between adjacent cells in the capillary wall |
| Positive Chemotaxis | they are attracted to specific chemical stimuli which guides them to pathogens, damaged tissues or other WBC |
| What is an amoeba and how does it move? | A single-celled micro organism that moves by creating pseudopods, which are cytoplasmic extensions that push out the plasma membrane to crawl across surfaces. |
| Why do WBC exit the capillaries instead of arteries/veins? | because of their structure, slower blood flow, and localized chemical signaling |
| Positive | leukocytes were detected in a sample where they shouldn't normally be present |
| Chemical | various molecular substances these cells naturally produce and release to defend your body, regulate inflammation, and communicate with other cells |
| Taxi | the directional movement of an organism or a cell (like a white blood cell) toward or away from a chemical or environmental stimulus. |
| NEUTROPHILS (50-70%) | Has a very dense, contorted nucleus with 2 to 5 lobes (like beads on a string), First WBC to arrive at an injury site its function is to serve as the immune system's primary first responders. |
| EOSINOPHILS (2-4%) | red granules & a two-lobed nucleus, its function is to defend the body against infections and tissue repair and metabolism |
| BASOPHIL (less than 1%) | pherical shape, relatively small diameter and its function is to defend the body against parasitic infections and regulating allergic and inflammatory responses |
| MONOCYTES (2-8%) | Large oval/kidney bean shaped nucleus and its function is to destroy old, damaged and dead cells in the body. and also release chemicals to attract neutrophils |
| LYMPHOCYTES (20-30%) | Contain a large nucleus surrounded by a thin halo of cytoplasm T helper cells=coordinate immune response with other cells T |