Quiz on Breathing and Respiration | Human Physiology Quiz

1. Lungs are made up of air filled sacs, the alveoli. They do not collapse even after forceful expiration, because of
Tidal volume
Inspiratory reserve volume
Residual volume
Exspiratory reserve volume

2.Reduction in pH of blood will
release bicarbonate ions by the liver
decrease the affinity of haemoglobin with oxygen
reduce the blood supply to the brain
reduce the rate of heartbeat

3.Name the chronic respiratory disorder caused mainly by cigarette smoking.
Respiratory acidosis
Respiratory alkalosis
Asthma
Emphysema

4.Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver----mL of O2 to the tissues...
5ml
10mL
4mL
2mL

5.Vital capacity of lung is
IRV + ERV
IRV + ERV +TV+RV
IRV + ERV +TV-RV
IRV +ERV +TV

6.Reduction in pH of blood will:
Reduce the rate of heart beat
Reduce the blood supply to the brain
Release bicarbonate ions by the liver
Decrease the affinity of hemoglobin with oxygen

7. Which of the following options correctly represents the lungs condition in asthma and emphysema respectively?
Inflammation of bronchioles; Decreased respiratory surface
Increased number of bronchioles; Increased respiratory surface
Increased respiratory surface; Inflammation of bronchioles
Decreased respiratory surface; Inflammation of bronchioles

8.Which of the following is an occupational respiratory disorder?
Botulism
Anthracis
Emphysema
Silicosis

9.Which of the following is not the function of conducting part of respiratory system?
Temperature of inhaled air is brought to body temperature
Inhaled air is humidified
Provides surface for diffusion of O2 and CO2
It clears inhaled air from foreign particles

10. When CO2 concentration in blood increases breathing becomes:
here is no effect on breathing
shallower and slow
slow and deep
faster and deeper

Score =
Correct answers: