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 two spongy, air-filled organs placed side by side on the left and right sides of the chest, or thorax. They take much room inside the rib cage and lie between another organ separated by a muscular sheet, called the diaphragm. Lungs form an essential part of respiration as they provide oxygen to blood and remove carbon dioxide from the body. Gas exchange is one of the primary roles of the lungs. The alveoli represent the tiny air sacs of the lung and modify this process of gas exchange concerning the blood.

Air passed down the trachea into bronchial tubes splits further on either side into two and then continues to subdivide into lesser bronchioles, which have developed into masses of tiny alveoli. This is where the oxygen to be utilized by the body diffuses into the bloodstream, carbon dioxide dissolved in the water of the body fluids leaving through exhaling.

Healthy lungs ensure general health. Smoking, air pollutants, and respiratory infections very fast compromise the function of the lungs and cause diseases like COPD, asthma, and lung carcinoma. Healthy living in the form of proper exercise, nutrition food, and avoidance of injurious agents would ensure maximal lung functions.

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

What structure prevents the collapse of the trachea?

Cartilaginous rings

Smooth muscle

Epithelial tissue

2 / 40

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

Carbon dioxide

Nitrogen

Oxygen

3 / 40

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

Produce mucus

Trap and move particles out

Absorb oxygen

4 / 40

The alveoli are the site of which process?

Filtration

Gas exchange

Digestion

5 / 40

The primary bronchi divide into smaller airways called?

Capillaries

Bronchioles

Alveoli

6 / 40

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

Liver

Heart

Stomach

7 / 40

The lungs receive deoxygenated blood from which blood vessels?

Pulmonary arteries

Aorta

Pulmonary veins

8 / 40

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

Glottis

Uvula

Epiglottis

9 / 40

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

Circulatory system

Nervous system

Digestive system

10 / 40

The main airway that enters each lung is called?

Alveolus

Trachea

Bronchus

11 / 40

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

Trachea

Bronchioles

Alveoli

12 / 40

Which part of the brain regulates breathing?

Hypothalamus

Cerebellum

Medulla oblongata

13 / 40

The diaphragm contracts during which phase of respiration?

Exhalation

Inhalation

Both phases

14 / 40

How many lobes does the right lung have?

Two

Three

One

15 / 40

What is the primary function of the lungs?

Gas exchange

Digestion

Circulation

16 / 40

The lungs are protected by a bony structure called the?

Vertebral column

Pelvic girdle

Rib cage

17 / 40

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

Bronchi

Alveolar-capillary membrane

Pleura

18 / 40

During exhalation, the diaphragm moves in which direction?

Upward

Laterally

Downward

19 / 40

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

Bronchioles

Alveoli

Trachea

20 / 40

Which type of epithelial tissue lines the alveoli?

Simple squamous epithelium

Simple cuboidal epithelium

Stratified squamous epithelium

21 / 40

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

Right lower lobe

Left lower lobe

Left upper lobe

22 / 40

The pleura is a membrane that covers which organ?

Liver

Lungs

Heart

23 / 40

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

Larynx

Pharynx

Trachea

24 / 40

The left lung has an indentation to accommodate which organ?

Liver

Heart

Spleen

25 / 40

Which structure carries air into the lungs?

Esophagus

Aorta

Trachea

26 / 40

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

T1-T2

T8-T9

T4-T5

27 / 40

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

Pericardium

Pleura

Peritoneum

28 / 40

The function of the bronchial arteries is to supply?

Oxygenated blood to lung tissue

Deoxygenated blood to the heart

Nutrients to the alveoli

29 / 40

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

Stroke volume

Tidal volume

Residual volume

30 / 40

What is the primary muscle involved in inhalation?

Abdominal muscles

Diaphragm

Intercostal muscles

31 / 40

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

Trapezius

Diaphragm

Biceps brachii

32 / 40

The respiratory system includes all of the following structures except?

Trachea

Esophagus

Bronchi

33 / 40

Which type of blood vessel surrounds the alveoli?

Arteries

Veins

Capillaries

34 / 40

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

Perfusion

Diffusion

Ventilation

35 / 40

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

Bronchial arteries

Pulmonary arteries

Pulmonary veins

36 / 40

Which cells in the alveoli produce surfactant?

Type I alveolar cells

Macrophages

Type II alveolar cells

37 / 40

The space between the lungs is known as the?

Pleural cavity

Mediastinum

Pericardial cavity

38 / 40

The lungs are located in which cavity of the body?

Thoracic cavity

Pelvic cavity

Abdominal cavity

39 / 40

How many lobes does the left lung have?

Four

Three

Two

40 / 40

What substance reduces surface tension in the alveoli?

Mucus

Bile

Surfactant

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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