Topic: Food Energy and Respiration Subtopic: Introduction
How does air reach blood vessels?
Answer: Air enters in the body through two passages i.e. nasal cavity (nose) and oral cavity (mouth). Afterwards, the air passes through trachea (windpipe) and reaches the bronchi. From bronchi the air moves to bronchioles and then reaches the alveoli (air sacs). The exchange of gases takes place in alveoli as blood vessels are present there.
Learn also:
- What plants do if water intake is less?
- What is sequence of transport of food?
- What is thrombosis?
- What happens when blood enters ventricles?
- What happen when we exhale?
- Why are Villi essential?