vascular resistance is the friction between veins and arteries and blood. In essence it is a measure of the flow of blood which is not a factor that directly affects vascular resistance blood viscosity blood vessel length blood vessel Lumen size or blood levels of estradiol and testosterone

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

answer; ///the above statement is (true);