Question

What are two examples of diffusion in the human body?

Answer 1

Diffusion:

1. The process in which the movement of gaseous molecules from the region of higher concentration to the region of lower concentration occurs is known as diffusion.
2. Diffusion is energy independent process.

Examples of diffusion in the human body:

Gas exchange:

1. During the respiratory process, cells need oxygen to produce energy.
2. The by-product of the respiratory process is carbon dioxide.
3. As we know, only oxygen is needed to maintain the cells of an organ, but carbon dioxide is toxic.
4. So we need to get rid of these gases from our bodies.
5. Thus diffusion is responsible for the intake of oxygen by the blood from alveoli and body cells through blood.
6. Diffusion also facilitates the movement of carbon dioxide from the cells to the lungs via blood.

Diffusion of waste products:

1. Kidneys include hundreds of thousands of small tubular systems known as nephrons, which terminate on a semi-permeable walled shape known as the glomerulus.
2. Blood that carries waste is guided through a clump of blood vessels which are surrounded by a glomerulus.
3. Small molecules which include water, sodium, and potassium glucose can pass thru the glomerulus and into the nephron.
4. The filtrate carries a huge quantity of waste, and it additionally carries molecules including glucose that may be reused throughout the body.
5. The tubule of the nephron is surrounded by capillaries that have a low amount of useful molecules.
6. Diffusion permits those molecules to re-enter the bloodstream. The final waste molecules inside the tubule are transformed into urea.