WebBlood is transported in arteries, veins and capillaries. Blood is pumped from the heart in the arteries. It is returned to the heart in the veins. The capillaries connect the two types of … WebThis allows them to carry blood that is at a high pressure. Capillaries are tiny, thin walled vessels that form a network to take blood through the organs and other body tissues. …
The blood vessels - The circulatory system (CCEA) - BBC Bitesize
WebVery few muscle and elastic fibres because blood does not surge through veins. Valves are present to prevent the backflow of blood. Capillaries Allow the diffusion of substances (e.g. oxygen,... i love you to the sun
The human gas exchange system - BBC Bitesize
WebExtensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs. A large diffusion gradient - breathing ensures that the oxygen... WebIt's already started changing. This film explores how water is transported from the roots, through the tubes in the stem, to the tip of the plant. The process is demonstrated with … WebVilli is the plural of villus. The epithelial cells that cover each villus themselves have projections called microvilli. A close up of the villi in the small intestine Cross-section of a villus... i love you truly deeply madly