solute (8%～10%)

water (90%～92%)

red blood cells

leukocyte

platelets

transport function

buffering effect

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White blood cells, lymphocytes, plasma proteins, complement and kinin systems in the blood constitute body weight The important immune and defense system removes pathogens, foreign matter and aging and dead cells that invade the body. It plays an important role in preventing the occurrence of various diseases (including tumors, AIDS, etc.) and repairing the body.

The physiological hemostatic effect of platelets and various coagulation factors in plasma ensures smooth blood flow in blood vessels. It also plays an important self-protective role in preventing bleeding.

The density of normal human whole blood is 1.050~1.060, and the viscosity is 4~5

The density of plasma is 1.025~1.030, and the viscosity is 1.6~2.4

albumin

globulin

fiber protein

concept

normal value

composition

effect

Normal human plasma pH is 7.35~7.45

Double concave dish

The surface of the red blood cell membrane has a negative charge

The NaCl concentration drops to 0.30% to 0.35%, and all red blood cells undergo hemolysis.

raw material

maturation factor

Erythropoietin (EPO)

androgens

It is the main cell of the body to resist pathogens and has active deformation ability. High chemotaxis and strong ability to phagocytose and digest bacteria

Participate in killing parasites and reducing the body's allergic reaction by phagocytosis of antigen-antibody complexes

Contains heparin, histamine, eotaxin and allergy Slow reactants and other biologically active substances

Can cause smooth muscle contraction and increase capillary permeability

Phagocytosis

T cells participate in cellular immunity

B cells participate in humoral immunity

K cells and NK cells constitute the body's important line of defense against viruses and have a killing effect on tumor cells.

(100～300)×10 to the 9th power/L

No nucleus; biconvex disc shape; Diameter 2~4μm; deformed after stimulation

Adhesion of platelets to non-platelet surfaces

ADP, ATP, 5-hydroxytryptamine, calcium ions and other active substances

Platelet-to-platelet adhesion

Platelets contain contractile proteins that cause blood clots to retract

Platelets provide a phospholipid surface for adsorption of plasma coagulation factors