Some of the oxygen dissolves in the film of moisture covering the epithelium of the alveoli.
From here, it diffuses into the blood in a nearby capillary, and enters a red blood cell before combining with the haemoglobin therein.
The diagram below shows the blood vessels involved in the transport of gases in the lungs.
Information: Organ/structure and its description
- Bronchioles - The branched structures found at the end of each bronchus.
- Trachea - A tube supported by C-shaped rings of cartilage.
- Diaphragm - A dome-shaped sheet of muscle found at the bottom of the thorax.
- Alveoli - If spread out, these structures would cover the size of a tennis court.
- Ribs - The intercostal muscles are found between them.
- Epiglottis - This is a special flap that covers the tracheal opening when we eat and prevents food from entering the trachea.
- Bronchi - The two tubes found at the lower end of the trachea.
- Nose - Air enters our body through this organ.
- Pharynx - The passageway for air between the nose and the trachea.
- Blood capillaries - The structures found on the outside of the alveoli.
No comments:
Post a Comment