EVERYDAY SCIENCE

Detailed explanation-1: -The red blood cells present in the blood carries glucose and oxygen to the cells of the body. The red blood cells also carries carbon dioxide and waste product discarded by the cells of the body.

Detailed explanation-2: -Glucose is formed by the breakdown of carbohydrates in the small intestine. Glucose is then absorbed into the blood from the small intestine via the villi by active transport. Glucose and oxygen travel in the bloodstream and are taken up into cells. Respiration takes place in the mitochondria, producing energy.

Detailed explanation-3: -Oxygen gets into the blood through tiny blood vessels around the alveoli. Red blood cells pick up the oxygen and deliver it to the body’s cells.

Detailed explanation-4: -The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Detailed explanation-5: -The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over.