Breathing is controlled by _____.

(a)

cerebrum

(b)

medulla oblongata

(c)

cerebellum

(d)

pons

During inspiration, the diaphragm _____.

(a)

expands

(b)

unchanged

(c)

relaxes to become domed-shaped

(d)

contracts and flattens

When 1500 mL air is in the lungs, it is called _____.

(a)

vital capacity

(b)

tidal volume

(c)

residual volume

(d)

inspiratory reserve volume

After a long deep breath, we do not respire for some seconds due to ______.

(a)

more CO₂ in the blood

(b)

more O₂ in the blood

(c)

less CO₂ in the blood

(d)

less O₂ in the blood

The ______________ lack cartilaginous rings.
(i) Trachea (ii) Bronchi (iii) Bronchioles (iv) Alveoli

(a)

(a) i and iii

(b)

ii and iii

(c)

i, ii and iii

(d)

iii and iv

An healthy human breathes ____________

(a)

12 - 16 times / minute

(b)

7 times / minute

(c)

2 times / second

(d)

20 times / minute

One of the following is not a occupational respiratory disorder.

(a)

Silicosis

(b)

Asbestosis

(c)

Fibrosis

(d)

Emphysema

When we go to hilly areas the kidney accelerates production of ______________

(a)

Adrenalin

(b)

Non adrenalin

(c)

Erythropoietin

(d)

Elastose

Find the incorrect statement.

(a)

Gaseous exchange continues in the lungs because some air remains inside the lungs even after deepest exhalation

(b)

The blood is the tissue capillaries contains higher pO₂ than tissue fluid.

(c)

Deoxygenation of blood promotes the release of carbon di oxide from the blood in the lungs.

(d)

All the above

_________ is used to measure the volume of air involved in breathing movement for clinical assessment.

(a)

Sphygmomanometer

(b)

Clinical thermometer

(c)

Spirometer

(d)

Haemocytometer.