BY 124L - Blood

What kind of tissue is blood?

connective

What is matrix?

plasma; consists of oxygen, calcium, iron, and vitamins

What is matrix responsible for?

transportation of the cellular components of blood

What do erythrocytes do?

carry oxygen

What do leukocytes do?

have roles in the immune system

What do platelets do?

help in clotting process

What are erythrocytes?

most numerous cells in blood, site of gas exchange, no nuclei or mitochondria in mature mammal blood, short lifespan of only a few weeks

How do erythrocytes go through gas exchange?

binding of oxygen to hemoglobin is a reversible process, most of the carbon dioxide carried out of the tissues in the form of carbonic acid, but some binds to hemoglobin; low levels of erythrocytes causes anemia

What is the difference between granulocytes and agranulocytes?

has granules and doesn’t have granules

What are the types of leukocytes?

granulocytes and agranulocytes

What are the types of granulocytes?

basophils, neutrophils, and eosinophils

What are the types of agranulocytes?

monocytes and lymphocytes

What are neutrophils?

granulocytes; polymorphic nucleus (3 to 5 lobes, dark purple), active in phagocytosis

What are eosinophils?

granulocytes; bilobed, dark purple nucleus; red granules in the cytoplasm, fights parasitic worm infections

What are basophils?

granulocytes; rarest, difficult to tell nucleus from cytoplasm, participate in allergic reactions by releasing histamine from granules in cytoplasm

What are monocytes?

agranulocytes; very big, nucleus is horseshoe shaped, transforms into a wander macrophage

What are lymphocytes?

agranulocytes; smallest leukocyte, usually have a spherical nucleus and a thin cytoplasm, possess a “memory bank” of what your immune system has encountered before

What are platelets/thrombocytes?

fragments of a large cell (megakaryocyte), responsible for blood clotting (thrombus and thrombosis)

What is thrombosis?

diagnosable medical symptoms following a blood clot

What is a thrombus?

blood clot