Free MCQs & Online Quiz Practice for Exams

Q: The distribution of air into lungs is controlled by

A) Bronchi

B) Bronchioles

C) Air sacs

D) All of these

Q: Presence of cartilaginous ring in respiratory tract act as

A) Keep passage open

B) Support

C) Prevent collapsing

D) All of the above

Q: Major contribution in inhalation by

A) Diaphragm

B) Intercostal muscles

C) Sternum

D) None of these

Q: When the human blood leaves the capillary bed of the tissue most of the carbon dioxide is in the form of

A) Carbonic acid

B) Bicarbonate ions

C) Carbon monoxide

D) Bicarbonate ions

Q: BCG vaccine is used for

A) Lung cancer

B) Tuberculosis

C) Pneumonia

D) Emphysema

Q: The permanent and irreversible destruction of alveoli is

A) Emphysema

B) Tuberculosis

C) Pneumonia

D) Otitis media

Q: Isoniazid and rifampin are used for the treatment of

A) Tuberculosis

B) Pneumonia

C) Emphysema

D) Otitis media

Q: One of the following event is NOT associated with the activity of expiration

A) Contraction of diaphragm

B) More dome-like shape of diaphragm

C) Backward & downward movement of rib cage

D) Relaxation of intercostal muscles

Q: Oxygen carrying capacity of blood does not depend upon

A) Partial pressure of CO₂

B) Partial pressure of O₂

C) Height from sea level

D) Quantity of blood

Q: When haemoglobin of the blood is fully saturated with oxygen the 100cc of blood contains

A) 15cc of oxygen

B) 20cc of oxygen

C) 10cc of oxygen

D) 20cc of oxygen

Q: The wall of the trachea and bronchi of human is furnished with a series of incomplete

A) Cartilaginous plates

B) Chitinous rings

C) Cartilaginous rings

D) Muscular rings

Q: What does not happen during inspiration?

A) Intercostal muscles contract

B) Ribs are elevated

C) Diaphragm becomes dome-shaped

D) Ribs move forwards

Q: The lateral walls of the chest cavity of man is composed of

A) Ribs and trachea

B) Intercostal muscles

C) Ribs & Intercostal muscles

D) Ribs

Q: Which sequence of organs is correct in air passageway of man?

A) Nasal cavities→ Larynx →Pharynx→Trachea→Bronchi

B) Nasal cavities→Pharynx→Trachea→Larynx→Bronchi

C) Nasal cavities→Pharynx→Larynx→Bronchi→Trachea

D) Nasal cavities→Pharynx→Larynx→Trachea→Bronchi

Q: Which part of the air passage way possesses cartilage plates in its wall?

A) Bronchioles

B) Distal region of bronchi

C) Proximal region of bronchi

D) Trachea

Q: Human lungs are spongy due to the presence of millions of

A) Bronchi

B) Alveoli

C) Bronchioles

D) Trachea

Q: Which event is not associated with the activity of expiration?

A) Contraction of diaphragm

B) More dome-like shape of diaphragm

C) Backward & downward movement of rib cage

D) Relaxation of intercostal muscles

Q: Which of the following symptoms is NOT caused by tetanus?

A) Muscle spasms

B) Respiratory failure

C) Lockjaw

D) Increased appetite

Q: Cartilage tissue

A) Has a rich blood supply

B) Has ability for a quick regeneration

C) Has chondrocytes as precursor cells

D) Is solid and firm but pliable

Q: Major inorganic component of vertebrate bone is

A) Calcium carbonate

B) Calcium phosphate

C) Potassium hydroxide

D) Calcium chloride