Lungs MCQs with Answers

adminJuly 1, 2024

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Welcome to the Lungs MCQs with Answers. In this post, we have shared Lungs Online Test for different competitive exams. Find practice Lungs Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Lungs.

The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). Enclosed by the rib cage and separated by the diaphragm, the lungs are vital for respiration, providing oxygen to the bloodstream and expelling carbon dioxide from the body. The primary function of the lungs is gas exchange, a process facilitated by the alveoli, tiny air sacs within the lungs where oxygen and carbon dioxide are exchanged with the blood.

Air enters the body through the nose or mouth, travels down the trachea, and passes into the bronchial tubes, which branch into smaller bronchioles within the lungs. These bronchioles lead to clusters of alveoli, where oxygen diffuses into the blood in exchange for carbon dioxide, which is then exhaled.

Maintaining healthy lungs is crucial for overall health. Factors such as smoking, pollution, and respiratory infections can impair lung function, leading to conditions like chronic obstructive pulmonary disease (COPD), asthma, and lung cancer. Regular exercise, a balanced diet, and avoiding harmful substances can help keep the lungs functioning optimally.

Lungs Online Quiz

By presenting 3 options to choose from, Lungs Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Lungs Questions and Answers and click over the correct answer.

Test Name: Lungs MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quiz, simply click on question and comment below that question, so that we can update the answer in the quiz section.

Lungs

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1 / 40

Which gas is primarily transported from the lungs to the tissues by hemoglobin?

Oxygen

Carbon dioxide

Nitrogen

2 / 40

How many lobes does the left lung have?

Four

Three

Two

3 / 40

During exhalation, the diaphragm moves in which direction?

Laterally

Downward

Upward

4 / 40

Which type of blood vessel surrounds the alveoli?

Capillaries

Veins

Arteries

5 / 40

The left lung has an indentation to accommodate which organ?

Spleen

Heart

Liver

6 / 40

What is the name of the small air sacs in the lungs?

Alveoli

Trachea

Bronchioles

7 / 40

The respiratory system includes all of the following structures except?

Esophagus

Trachea

Bronchi

8 / 40

Which structure carries air into the lungs?

Aorta

Esophagus

Trachea

9 / 40

The lungs receive deoxygenated blood from which blood vessels?

Aorta

Pulmonary arteries

Pulmonary veins

10 / 40

What substance reduces surface tension in the alveoli?

Surfactant

Bile

Mucus

11 / 40

The primary bronchi divide into smaller airways called?

Capillaries

Bronchioles

Alveoli

12 / 40

Which part of the respiratory system is responsible for voice production?

Pharynx

Trachea

Larynx

13 / 40

The main function of the cilia in the respiratory tract is to?

Absorb oxygen

Produce mucus

Trap and move particles out

14 / 40

The main airway that enters each lung is called?

Trachea

Bronchus

Alveolus

15 / 40

What is the primary function of the lungs?

Gas exchange

Circulation

Digestion

16 / 40

Which muscle plays a crucial role in the process of breathing?

Trapezius

Diaphragm

Biceps brachii

17 / 40

The function of the bronchial arteries is to supply?

Nutrients to the alveoli

Oxygenated blood to lung tissue

Deoxygenated blood to the heart

18 / 40

The process of moving air in and out of the lungs is called?

Diffusion

Ventilation

Perfusion

19 / 40

Which part of the brain regulates breathing?

Hypothalamus

Medulla oblongata

Cerebellum

20 / 40

The total lung capacity is the sum of all of the following except?

Residual volume

Stroke volume

Tidal volume

21 / 40

What is the term for the double-layered membrane surrounding the lungs?

Peritoneum

Pleura

Pericardium

22 / 40

Which type of epithelial tissue lines the alveoli?

Simple squamous epithelium

Simple cuboidal epithelium

Stratified squamous epithelium

23 / 40

The lungs are protected by a bony structure called the?

Vertebral column

Pelvic girdle

Rib cage

24 / 40

Which cells in the alveoli produce surfactant?

Type II alveolar cells

Type I alveolar cells

Macrophages

25 / 40

The trachea divides into two main bronchi at which level of the vertebral column?

T4-T5

T1-T2

T8-T9

26 / 40

The pleura is a membrane that covers which organ?

Lungs

Liver

Heart

27 / 40

Which part of the lung is most affected by inhaled foreign particles?

Left upper lobe

Left lower lobe

Right lower lobe

28 / 40

The exchange of gases in the lungs occurs across which structure?

Pleura

Alveolar-capillary membrane

Bronchi

29 / 40

The alveoli are the site of which process?

Gas exchange

Digestion

Filtration

30 / 40

Oxygenated blood is returned to the heart from the lungs via which vessels?

Pulmonary veins

Bronchial arteries

Pulmonary arteries

31 / 40

The space between the lungs is known as the?

Pericardial cavity

Pleural cavity

Mediastinum

32 / 40

Which part of the lung has the highest oxygen concentration during gas exchange?

Bronchioles

Alveoli

Trachea

33 / 40

What is the flap that covers the trachea during swallowing to prevent food from entering?

Epiglottis

Glottis

Uvula

34 / 40

The lungs are located in which cavity of the body?

Pelvic cavity

Abdominal cavity

Thoracic cavity

35 / 40

How many lobes does the right lung have?

Three

Two

One

36 / 40

What structure prevents the collapse of the trachea?

Cartilaginous rings

Epithelial tissue

Smooth muscle

37 / 40

The diaphragm contracts during which phase of respiration?

Inhalation

Both phases

Exhalation

38 / 40

The respiratory system works closely with which other system to distribute oxygen?

Digestive system

Nervous system

Circulatory system

39 / 40

What is the primary muscle involved in inhalation?

Abdominal muscles

Intercostal muscles

Diaphragm

40 / 40

The right lung is shorter than the left lung due to which organ's presence?

Liver

Heart

Stomach

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Lungs Flashcards

The lungs are located in which cavity of the body?

Thoracic cavity

What is the primary function of the lungs?

Gas exchange

Which structure carries air into the lungs?

Trachea

How many lobes does the right lung have?

Three

How many lobes does the left lung have?

Two

The alveoli are the site of which process?

Gas exchange

What substance reduces surface tension in the alveoli?

Surfactant

Which muscle plays a crucial role in the process of breathing?

Diaphragm

The exchange of gases in the lungs occurs across which structure?

Alveolar-capillary membrane

The pleura is a membrane that covers which organ?

Lungs

The right lung is shorter than the left lung due to which organ's presence?

Liver

What is the name of the small air sacs in the lungs?

Alveoli

Which type of blood vessel surrounds the alveoli?

Capillaries

The left lung has an indentation to accommodate which organ?

Heart

Which part of the brain regulates breathing?

Medulla oblongata

The main airway that enters each lung is called?

Bronchus

What is the primary muscle involved in inhalation?

Diaphragm

Oxygenated blood is returned to the heart from the lungs via which vessels?

Pulmonary veins

Which cells in the alveoli produce surfactant?

Type II alveolar cells

What is the term for the double-layered membrane surrounding the lungs?

Pleura

During exhalation, the diaphragm moves in which direction?

Upward

The primary bronchi divide into smaller airways called?

Bronchioles

The main function of the cilia in the respiratory tract is to?

Trap and move particles out

The space between the lungs is known as the?

Mediastinum

The diaphragm contracts during which phase of respiration?

Inhalation

The lungs receive deoxygenated blood from which blood vessels?

Pulmonary arteries

The total lung capacity is the sum of all of the following except?

Residual volume

Which part of the respiratory system is responsible for voice production?

Larynx

Which type of epithelial tissue lines the alveoli?

Simple squamous epithelium

The lungs are protected by a bony structure called the?

Rib cage

Which gas is primarily transported from the lungs to the tissues by hemoglobin?

Oxygen

The respiratory system includes all of the following structures except?

Esophagus

Which part of the lung is most affected by inhaled foreign particles?

Right lower lobe

The respiratory system works closely with which other system to distribute oxygen?

Circulatory system

The process of moving air in and out of the lungs is called?

Ventilation

Which part of the lung has the highest oxygen concentration during gas exchange?

Alveoli

What is the flap that covers the trachea during swallowing to prevent food from entering?

Epiglottis

The function of the bronchial arteries is to supply?

Oxygenated blood to lung tissue

What structure prevents the collapse of the trachea?

Cartilaginous rings

The trachea divides into two main bronchi at which level of the vertebral column?

T4-T5

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adminJuly 1, 2024

0 7 2 minutes read