Biology
What is meant Dead air space?
Respiratory System
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Answer
Some tidal air is remaining in the respiratory passages such as bronchi and trachea. Here no gas diffusion takes place. This volume is referred to as dead air space and its volume is 150mL.
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Related Questions
Write one important role of each of the following .
- Epiglottis
- Larynx
- Alveolus
- Pleura
- Nasal chamber
The muscular sheet which divides the body cavity into thorax and abdomen is termed as :
- Inner pleura
- Rib cage
- Outer pleura
- Diaphragm
The diagram given alongside is an experimental set up mimicking a certain process occurring in living beings. Study the figure and answer the following questions :
(i) Name the process and define it.
(ii) What are the two phases of the above mentioned process shown as (A) and (B) ?
(iii) Name the particular organs of the body shown in the figure with :
(a) Bell jar (b) Balloons (c) Rubber sheet(iv) How do these phases (A) and (B) differ with respect to the position of ribs ?
(v) Does the breathing rate of a young boy and an old person differ ? Explain.
Assertion (A): The main pulmonary artery pumps oxygenated blood from the right ventricle into the lungs.
Reason (R): Inside the lungs, the artery divides and divides several times to form capillaries around the air sacs.
- A is True, and R is false.
- A is False, and R is true.
- Both A and R are true.
- Both A and R are false.