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Test: Respiratory Organs & Human Respiratory System - NEET MCQ


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10 Questions MCQ Test - Test: Respiratory Organs & Human Respiratory System

Test: Respiratory Organs & Human Respiratory System for NEET 2024 is part of NEET preparation. The Test: Respiratory Organs & Human Respiratory System questions and answers have been prepared according to the NEET exam syllabus.The Test: Respiratory Organs & Human Respiratory System MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Respiratory Organs & Human Respiratory System below.
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Test: Respiratory Organs & Human Respiratory System - Question 1

The alveoli of lungs are lined by:

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 1
  • The respiratory or gas-exchange surface consists of millions of small sacs, or alveoli, lined by a simple squamous epithelium.
  • This epithelium is exceedingly thin to facilitate the diffusion of oxygen and CO2
  • The alveolar walls also contain cuboidal surfactant-secreting cells.

Hence, the correct option is A

NCERT Reference: Topic- EXCHANGE OF GASES” of chapter "Breathing and Exchange of Gases" of NCERT 

Test: Respiratory Organs & Human Respiratory System - Question 2

What is the shape of Haemoglobin-oxygen dissociation curve?

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 2

  • Graph is plotted between oxygen concentration and percentage saturation of haemoglobin with this curve is called dissociation curve.
  • Dissociation curve is sigmoid in shape.

Hence, the correct option is D.

NCERT Reference: Topic-  Transport of Oxygen” of chapter "Breathing and Exchange of Gases" of NCERT

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Test: Respiratory Organs & Human Respiratory System - Question 3

The pharynx opens into the larynx by a slit-like aperture called ______.

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 3
  • The pharynx opens into the larynx by a slit-like aperture called the glottis, which is covered by a cartilaginous flap called the epiglottis.
  • The epiglottis closes the glottis to prevent the entry of food particles during swallowing.

Hence, the correct option is C.

NCERT Reference: Topic- Human Respiratory System” of chapter "Breathing and Exchange of Gases" of NCERT

Test: Respiratory Organs & Human Respiratory System - Question 4

Which of the following diseases can be found in workers working in a mill?

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 4
  • Workers in a mill or industrial setting may be at risk of developing occupational respiratory disorders.
  • These disorders can be caused by exposure to various airborne pollutants, such as dust, fumes, chemicals, and particulate matter, which are commonly found in industrial and manufacturing environments.
  • In industries, produced dust can’t be cope up by the defense system of human body.
  • Long and continuous exposure gives rise to inflammation leading to fibrosis and thus leading to severe lung damage.

Hence, the correct option is D

NCERT Reference: Topic -"Respiratory Disorders"  of chapter "Breathing and Exchange of Gases" of NCERT.

Test: Respiratory Organs & Human Respiratory System - Question 5

Which of the following is not the function of the respiratory system?

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 5
  • The respiratory system helps in the regulation of blood pH, gaseous exchange and also contains receptors of smell, produces vocal sound and filters inspired air.
  • While the cardiovascular system protects against blood loss by the formation of blood clots.

Hence, the correct option is D

NCERT Reference: Topic- Human Respiratory System” of chapter "Breathing and Exchange of Gases" of NCERT 

Test: Respiratory Organs & Human Respiratory System - Question 6

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 6
  • The volume of air remaining in the lungs even after a forcible expiration is called residual volume.
  • This residual volume prevents the lungs from collapsing.

Hence, the correct option is B.

NCERT Reference: Topic- Respiratory Volumes and Capacities” of chapter "Breathing and Exchange of Gases" of NCERT 

Test: Respiratory Organs & Human Respiratory System - Question 7

Lungs have a large number of narrow tubes called ______.

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 7
  • The narrow tubes found inside the lungs are called bronchioles
  • When we breathe, air travels from the nose or mouth, and goes down the trachea and reaches the part called the carina.
  • From here the tube branches into two, creating two bronchi that lead to the left and right lung each.
  • From there onwards, the bronchi split into smaller and smaller bronchioles until it terminates in the alveoli where gas exchange occurs.

Hence, the correct option is C.

NCERT Reference: Topic- Human Respiratory System” of chapter "Breathing and Exchange of Gases" of NCERT.

Test: Respiratory Organs & Human Respiratory System - Question 8

Lungs are covered by a double layered membrane which is called

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 8

The pleural membrane is a double-layered serous membrane that encloses the lungs and lines the thoracic cavity. The outer layer, the parietal pleura, lines the thoracic wall, while the inner layer, the visceral pleura, covers the surface of the lungs.

Test: Respiratory Organs & Human Respiratory System - Question 9

Which of the following statements is true about Trachea, in a respiratory system?

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 9

The trachea serves as a passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.

Hence, the correct option is C.

NCERT Reference: Topic-  Human Respiratory System” of chapter "Breathing and Exchange of Gases" of NCERT 

Test: Respiratory Organs & Human Respiratory System - Question 10

What does Tidal Volume (TV) represent in respiratory physiology?

Detailed Solution for Test: Respiratory Organs & Human Respiratory System - Question 10

Tidal Volume (TV) signifies the volume of air inspired or expired during a regular breath cycle. It is typically around 500 mL in a healthy adult. This volume is vital for oxygenating the body during each breath. In a minute, a healthy individual can inspire or expire approximately 6000 to 8000 mL of air. Understanding Tidal Volume is crucial in assessing respiratory function and efficiency, particularly in conditions affecting lung capacity or breathing patterns.

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