Differentiate between each of the following pairs with reference to the aspect asked within brackets: (a) Erythrocytes and leucocyte (function) (b) Artery and vein (direction of blood flow) (c) Artery and vein (the type of blood primarily flowing through) (d) Tricuspid and bicuspid valves (location).
Differentiate between each of the following pairs with reference to phrases in brackets: (a) Antibodies and antibiotics (Source) (b) RBC and WBC (structure) (c) Serum and vaccine (Composition)
Blood in the arteries flow with _______ pressure than blood in the veins. Therefore,the walls of the arteries are ________ than veins.