Which of the following helps in regulation the respiratory rhythm

(1)Respiratory rhythm centre

(2)Pneumotaxic centre

(3)Aortic arch and carotid artery receptors

(4)All of the above

The respiratory centre is highly sensitive for

(1)CO_2­

(2)O_2­

(3)H⁺ ions

(4)Both A and C

The respiratory centre is highly insensitive for

1. CO_2­

2. O_2­

3. H⁺ ions

4. Both 1 and 3

Aortic arch and carotid artery receptors cannot recognise changes in

(1)CO_2­ Concentration

(2)O_2­ Concentration

(3)H⁺ ions Concentration

(4)All of these

Pneumotaxic Centre is present in the

(1)forebrain

(2)midbrain

(3)Hindbrain

(4)Diencephalon

Respiratory rhythm Centre is present in the

(1)forebrain

(2)midbrain

(3)Hindbrain

(4)Diencephalon

Difficulty in breathing due to inflammation  of bronchi and bronchioles leads to

(1)Asthma

(2)Emphysema

(3)Occupational Lung Disease

(4)Rhinitis

Which of the following disease is caused mainly due to cigarette smoking

(1)Asthma

(2)Emphysema

(3)Bronchitis

(4)Rhinitis

In which of the following disease alveolar walls are damaged due to which respiratory surface is decreased

(1)Asthma

(2)Emphysema

(3)Bronchitis

(4)Rhinitis

All the following facilitate binding of oxygen to hemoglobin at alveoli except:

1.  Low pO₂

2.  Low pCO₂

3.  Lesser H⁺ concentration

4.  Lower temperature