Biology

Respiration and Gas Exchange

989 Questions

Access a targeted set of questions on respiration and gas exchange for competitive exams. Topics include lung volumes, the mechanism of breathing, and respiratory anatomy. Understanding these physiological processes is essential for scoring well.

Lung volumes and capacitiesBreathing mechanismsRespiratory anatomyGas exchange processes

Respiration and Gas Exchange Questions

Multiple choice

What are the divisions of trachea which function before it finally passes the air to alveoli?

  1. Trachea- p bronchi- lober bronchi- segmental bronchi- respiratory bronchioles- terminal bronchioles- alveolar ducts- alveolar sacs

  2. Trachea- p bronchi- segmental bronchi- lober bronchi- terminal bronchioles- respiratory bronchioles- alveolar ducts- alveolar sacs

  3. Trachea- p-bronchi-lober bronchi- segmental bronchi- terminal bronchioles- respiratory bronchioles- alveolar ducts- alveolar sacs

  4. Trachea- p bronchi- segmental bronchi- lober bronchi- respiratory bronchioles- terminal bronchioles- alveolar ducts- alveolar sacs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Trachea divides into 2 primary bronchi, which sub-divide into three secondary bronchi.

Multiple choice

Which of the following sentences is incorrect?

  1. The right main bronchus is wider, shorter and more verical than the left main bronchus.

  2. The left main bronchus is shorter than the right one.

  3. Eparterial bronchus is present in the superior lobe of lungs.

  4. The right main bronchus divides into three secondary bronchi.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is incorrect. Left main bronchus is longer than the right one.

Multiple choice

Which of the following is incorrectly matched?

  1. Dysporea - Difficulty or painful breathing

  2. Apnoea - Cessation of breathing

  3. Anoxia - Absence of oxygen

  4. Hypoxia - Reduced oxygen content of air or a body

  5. Cyanosis - High oxygen concentration in breathing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is correctly matched. Cyanosis is the appearance of a blue or purple colouration of the skin.

Multiple choice

What is tachypnoea?

  1. Increased heart rate

  2. Decreased heart rate

  3. Increased respiration rate

  4. Decrease respiration rate

  5. Increased circulation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tachypnoea is the term for increased respiration rate.