blood Flashcards
_____________ is the liquid portion of blood, an aqueous mixture of nutrients, salts, respiratory gases, hormones, and blood proteins
plasma
the cellular portion of blood consists of three major categories, what are they?
- erthrocytes (RBCs)
- leukocytes (WBCs)
- platelets
all blood cells are formed from __________
hemopoietic stem cells
hemopoietic stem cells and blood cells originate in the __________
bone marrow
__________ is a specialized cell designed for oxygen transport
erthrocyte
how many oxygen molecules can one hemoglobin bind?
4
approximately how many oxygen molecules can one RBC carry?
~ 1 billion
what is the purpose of RBCs biconcave shape?
- assists them in traveling through tiny capillaries
- increases cells surface area
T / F - when a RBC matures it loses it mitochondria, nuclei, and other membrane bound organelles
true
because RBCs do not have a mitochodria, they are unable to perform oxidative phosphorylation to generate ATP, what do they do instead?
rely entirely on glycolysis
T / F - RBCs are unable to divide
true
________ measures the quantity of hemoglobin in the blood
hemoglobin (g/dL)
_____________ is a measure of how much of the blood sample consosts of red blood cells
hemocrit (%)
____________ are a crucial part of the immune system, acting as our defenders against pathogens, foreign cells, and cancer
leukocytes (WBCs)
two major types of leukocytes?
- graulocytes
- agranulocytes
types of granulocytes?
- neutrophils
- basophils
- eosinophils
*PHIL likes GRAN
the granules within granulocytes are often exocytosized in response to ?
inflammatory
allergens
pus formation
destruction of bacteria / parasites
types of agranulocytes?
- monocytes
- lymphocytes
lymphocytes are important in the _______________, the body’s targeted fight against particular pathogens
specific immune response
lymphocytes that mature in the bone marrow are called __________
B cells
lymphocytes that mature in the thymus are called ____________
T cells
what is the function of B cells?
antibody generation
what is the function of T cells?
kill virally infected cells and activate other immune cells
once a monocyte leaves the bloodstream and enters an organ, it is renamed __________
macrophage
*phagocytize foreign matter