What is the role of blood in the transportation of materials throughout the body?

Answer 1

Blood transports many different kinds of materials. Most importantly, it transports oxygen to every corner of the body. It also transports nutrients throughout the body. It transports carbon dioxide to the heart, where the carbon dioxide is processed to the lungs and breathed out. Blood can also transmit certain diseases.

Answer 2

The blood plasma carries all the substances that our cells require to metabolise. These include red blood cells (which hold oxygen - for aerobic respiration), carbon dioxide and lactic acid (waste products of aerobic and anaerobic respirations respectively), soluble products of digestion like glucose, amino acids and fatty acids. Hormones, white blood cells and platelts are also transported by the bloodstream. Of course, don't think all these substances are present in the blood all the time. Some substanes are only present at certain times. Lactic acid for example is only carried away when we respire anaerobically, after vigorous exercise.

Answer 3

Oxygen is transported by the haemoglobin of the red blood cells (erythrocytes). The oxygen binds reversibly to the haemoglobin to form oxyhemoglobin. Oxygen may also be dissolved and be transported in the solution form in blood plasma. Carbon dioxide is transported mainly as hydrogencarbonate ions. The process whereby carbon dioxide is converted into the bicarbonate ions occurs in the red blood cells. The reaction is reversible. Chemical reactions occurring in the red blood cells: COz + H2O → H2CO3 (carbonic acid) Note: The above reaction is catalyzed by enzyme carbonic anhydrase. H2CO3 → H+ + HCO3- Note: H+ and HCO3- will then diffuse out of the red blood cells to be transported as ions in the blood plasma. The reverse reaction occurs to get Carbon dioxide back (e.g. when blood passes by the alveoli) Carbon dioxide may also be dissolved and be transported in the solution form in blood plasma, or may also bind to the amino groups of plasma proteins or the hemoglobin (as carbamino-hemoglobin).

Answer 4

Blood is the main transportation system of the body. Oxygen is transported by the red blood cells. Carbon dioxide, water, wastes, hormones and digested food travel in the plasma. That is why arteries, veins and capillaries form a network all over the body, and why a good blood supply is essential for all body parts, and why a well functioning heart is necessary to keep the blood moving.

Answer 5

Blood transports oxygen, nutrients, hormones, and waste products to and from cells throughout the body. It carries oxygen from the lungs to tissues and removes carbon dioxide. Nutrients are absorbed in the digestive system and transported via the blood to cells for energy production. Waste products are carried away from cells to be removed by the kidneys or liver.