Blood 3: granulocytes

18 important questions on Blood 3: granulocytes

Natural killer cells =

NK cells

Natural killer lymphocytes help

kill body cells that are cancerous or have been infected by viruses

Involved in fighting tumors and virus-infected cells

t-cells
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B lymphocytes produce

antibodies

Important in fighting chronic infection

monocytes

Derived from ruptured megakaryocytes

platelets

Means blood cell formation

hematopoiesis

Unable to divide, grow, or make proteins

erythrocytes

Erythrocytes life length

100 to 120  days

When hemoglobin is broken down,

iron is stored in liver and recycled
heme is made into bilirubin and biliverdin
globin peptides broken down to amino acids

Pigments that normally end up in bile and feces

bilirubin and biliverdin

Broken down into amino acids when red blood cell gives

globin peptides

Are replaced by division and differentiation of hemocytoblasts

red blood cells lost

Produce erythropoietin in response to low oxygen in blood

kidneys and liver

Blood oxygen homeostsis is maintained by

negative feedback

Signalling molecules control the

formation of white blood cells and platelets

Prompt red bone marrow to generate leukocytes

colony stimulating factors
interleukins

Response to torn blood vessels

hemostasis

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