Flashcards in Blood and Lymph Deck (18):
3 connective tissue categories
connective tissue proper (loose and dense). fluid connective tissues (blood and lymph). supporting connective tissues (cartilage and bone)
blood: composed of? matrix?
blood cells and plasma. plasma forms fluid matrix.
lymph: composed of? fluid?
lymphocytes and lymph fluid. lymph fluid is a dilute solution of proteins and excess interstitial fluid
blood: 3 purposes?
distributes nutrients, oxygen and hormones to body cells. carries metabolic wastes away fro cells and to kidneys for excretion. transports specialized cells that provide protection against infection and disease
blood: volume? pH? temperature?
5-6L in average male. 4-5 average female. 7.35 - 7.45. 38C
formed elements in blood: 3 parts?
red blood cells (99%). WBCs. platelets.
5 WBCs and what they do
neutrophils = destroy bacteria. eosinophils = anti inflammatory and allergic response. basophils = inflammatory response. monocytes = macrophages. lymphocytes = immune response
RBCs: shape? why?
biconcave disc shaped cells: provides strength and flexibility. increases surface area so increases diffusion b/w inside and outside of cell. can stack as rouleaux
RBCs: intracellular structures? why?
are ejected from cell during development: not needed for main purpose of gas transport, ensures the cell doesn't consume the O2 it's carrying, but also means no repair mechanism for cell
RBC: cytoplasm components
water = 66%. proteins = 33%, mostly hemoglobin
leukocytes: two main types? where are they found?
granular and agranular. small fraction in circulating blood, most in peripheral tissues
low WBC. high WBC.
a few days
types of endothelial cell arrangements
continuous: arterial. fenestrated = venous. discontinuous = lymphatic
which leukocytes are granular vs agranula
granulocytes: neutrophils, eosinophils, basophils. agranulocytes: monocytes and lymphocytes
neutrophils: mobility? function? lifespan?
very mobile, usually first to arrive at site. active phagocytes. short life span ~12 hours
phagocytic. numbers increase during allergic/infection. release enzymes that reduce inflammation, control spread to adjacent tissues