Regarding pulmonary capacities, the maximum volume of air a person can breathe in after a forced expiration can also be defined as:

1.	Total volume of air a person can inspire or expire after a normal inspiration or expiration
2.	Volume of air that will remain in the lungs after a normal expiration
3.	Maximum volume of air a person can breathe out after a forced inspiration
4.	Total volume of air accommodated in the lungs at the end of a forced inspiration

Under normal physiological conditions, what amount of oxygen is delivered to the tissues?

Identify the incorrect statement regarding the enzyme carbonic anhydrase:

Pulmonary fibrosis is a pathological hallmark of:
1. Chronic obstructive lung disease
2. Bronchial asthma
3. Viral Pneumonia in children
4. Occupational lung diseases

Alveoli in the lungs are lined by:
1. a simple squamous epithelium.
2. a pseudostratified ciliated columnar epithelium.
3. a simple cuboidal epithelium.
4. a transitional epithelium.

Gas exchange in the human lungs takes place across the respiratory membrane which is made up of:

Both carbon dioxide and oxygen move across the respiratory membrane due to:

What will happern to the rate and depth of breathing when blood carbon dioxide rises?

The peripheral chemoreceptors in carotid and aortic bodies respond to:
1. hydrogen ion concentration.
2. levels of carbon dioxide in the blood.
3. levels of oxygen in the blood.
4. all of the above