Anatomy and Physiology - Blood : White Blood Cells

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Neutrophil

First cell to arrive at a site of injury. provides nonspecific protection by phagocytosis. Dies as a result of phagocytosis.

Granulocytes

Granules in cytoplasm.

Two major types of leukocytes?

Granulocytes and Agranulocytes

Basophil

Initiates inflammation.

Phagocytosis

Leukocytes can ingest and destroy foreign particles.

What are the types of agranulocytes?

Lymphocytes and monocytes.

What is another name for agranuloctyes?

Mononuclear lymphocytes.

What are the type of granulocytic leukocytes?

Neutrophils, eosinophils, and basophils.

Agranulocytes

No granules in cytoplasm.

Polymorphonuclear Leukocytes

Nuclei of mature granulocytes are so deeply lobed that these cells appear to have multiple nuclei.

Monocytes

Performs mildly phagocytic functions. Becomes a macrophage when it enters tissues and functions in immunity.

What is another name for granulocytic leukocytes?

Polymorphonucleaer leukocytes.

What are the two types of leukocytes categorized by?

Presence or absence of granules in their cytoplasm.

Function of White blood cells?

Protect the body against invasion by pathogens and foreign substances, remove debris from injured tissue, and aid in the healing process.

Lymphocytes

Provides acquired (specific) immunity.

Eosinophil

Combats multicellular parasites. Controls mechanisms associated with allergies.

Diapedesis

White blood cells migrate through endothelial walls of capillaries and venules and enter tissue space.


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