Leukocytes

Question 1

leukocytes

Answer 1

white blood cells, possess a nucleus and organelles and are larger than erythrocytes

Question 2

leukocytes found in,,

Answer 2

blood vessels, lymph, and tissue fluid

Question 3

granulocytes

Answer 3

neutrophiles, eosinophils, and banophils (granuoles in cytoplasm)

Question 4

agranulocytes

Answer 4

lymphocytes and monocytes (lacking granuoles)

Question 5

neutrophils

Answer 5

first to appear at an infection -> phagocytize bacteria

Question 6

eosinophils

Answer 6

protect against infections by parasitic worms; increase in numbers during allergic reactions

Question 7

basophils

Answer 7

release histamines in damaged tissues -> vascular dilation; release heparin (increase blood flow to an area)

Question 8

lymphocytes

Answer 8

• 20-40% of WBC’s
• T lymphocytes: kill infected cells or cancer cells (mature in thymus)
• B lymphocytes: produce antibodies against specific antigens (foreign proteins) and deactify toxins

Question 9

monocytes

Answer 9

• 2-8% of WBC’s
• very mobile and phagocytotic (bacteria, viruses, virus-infected cells)
• circulatory system

Question 10

leukemia

Answer 10

• cancer that causes overproduction of abnormal WBC’s (lowers concentration of hematocrit)
• WBC’s accumulate in bone marrow, lymph nodes, spleen, and liver -> organs lose their ability to function
• treatment:
• chemotherapy: destroys abnormal cells and restores normal blood cell production, circulatory system
• craniospinal irradiation: prevents leukemic cells from moving into the CNS