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.
- What is anemia?
- Which muscles make our chest move?
- What are properties of vessels?
- What is quantity of white blood cells in blood?
- How does humidity affect rate of transpiration?
- What is vascular bundle?