Acute infections cause an excess of WBCs known as ___ leukocytosis ______________. A deficiency of WBCs, called ___ leukopenia __, can also indicate a variety of infections including AIDS. What is leukemia? Overproduction of abnormal white blood cells that have cancerous traits Granulocytes : Why is this group called granulocytes? These are granules that are observed in their cytoplasm when they have particular stains Neutrophils: Neutrophils have _ red ____-staining fine cytoplasmic granules and a __ multi __-lobed nucleus; they comprise most of the leukocytes. What is their function? Phagocytize viruses, fungi, and bacteria. What does diapedesis mean? The squeezing of cells in blood vessel walls Eosinophils: Eosinophils have coarse granules that stain deep __ red _____, a ___ bi _______-lobed nucleus. What are their functions? Defend against particular parasites, moderate allergic reactions Basophils: Basophils have fewer granules that stain __ blue _______________. Basophils produce chemicals, what are the functions of these chemicals? (i) heparin- an anticoagulant, inhibits thrombin by enhancing the activity of anthithrombin (ii) histamine- Inflammatory chemical that acts like a vasodilator, like allergies. 4
Agranulocytes : Why are they called agranulocytes? They do not have cytoplasmic granules Monocytes: Monocytes are the ___ largest ___ blood cells, have __ oval ______-shaped nuclei. What is the function of the monocytes? They phagocytize cellular debris and bacteria Lymphocytes: Lymphocytes are long-lived, have a large, __ spherical ____ nucleus. What is their function? Immunity response Platelets = thrombocytes : Blood platelets are fragments of big cells called __ megakaryocytes _______________________. Platelets help repair damaged blood vessels by _____ adhering ___________ to their broken edges. Plasma: Plasma is the clear, straw-colored fluid portion of the blood. Plasma is mostly _ water ___________________ but contains a variety of substances. What are plasma’s functions? Transports gases and nutrients, regulates electrolyte and fluid balance in the blood, and maintains the acid base balance. Plasma proteins: The plasma proteins are the most abundant dissolved substances in the plasma . Briefly describe the functions of the following plasma proteins. albumin: maintains the correct osmotic red of the plasma globulin: the transport of lipid and fat soluble vitamin, some are antibodies 5
fibrinogen: a glycoprotein that helps in the formation of blood clots hormones: regulates and controls physiological functions Other Plasma Components: Nutrients and Gases What are the two most important blood gases?
You've reached the end of your free preview.
Want to read all 8 pages?
- Winter '14
- red blood cells, white blood cell