Diaphragm MCQs with Answers

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

The diaphragm is a crucial muscle in the human respiratory system, located below the lungs and heart, separating the thoracic cavity from the abdominal cavity. It plays a vital role in the breathing process. When the diaphragm contracts, it flattens, enlarging the thoracic cavity and reducing the pressure within, which allows air to flow into the lungs. When the diaphragm relaxes, it returns to a dome shape, pushing air out of the lungs. This involuntary muscle movement is essential for effective respiration and oxygen exchange in the body.

In addition to its respiratory functions, the diaphragm also contributes to core stability and helps in processes like coughing, sneezing, and vomiting by generating intra-abdominal pressure. Diaphragm dysfunction can lead to breathing difficulties and conditions such as diaphragmatic paralysis or eventration. Strengthening the diaphragm through exercises like diaphragmatic breathing can enhance respiratory efficiency and overall well-being.

Diaphragm Online Quiz

By presenting 3 options to choose from, Diaphragm 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 Diaphragm Questions and Answers and click over the correct answer.

Test Name: Diaphragm 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.

Diaphragm

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1 / 40

Which event occurs when the diaphragm contracts?

Exhalation

Inhalation

Swallowing

2 / 40

The diaphragm is composed of which type of muscle tissue?

Skeletal muscle

Cardiac muscle

Smooth muscle

3 / 40

The diaphragm has openings for all of the following except?

Esophagus

Inferior vena cava

Trachea

4 / 40

The diaphragm is anchored to the spine by what structure?

Tendons

Crura

Ligaments

5 / 40

Which structure does the phrenic nerve pass through before reaching the diaphragm?

Pleural cavity

Nasal cavity

Mediastinum

6 / 40

Which side of the diaphragm is higher due to the liver?

Both sides are equal

Left side

Right side

7 / 40

What shape is the diaphragm in its relaxed state?

Dome-shaped

Oval

Flat

8 / 40

The diaphragm is part of which system in the body?

Respiratory system

Digestive system

Nervous system

9 / 40

How many openings are there in the diaphragm for major structures?

Two

Four

Three

10 / 40

Diaphragmatic hernia usually occurs in which area?

Caval opening

Esophageal hiatus

Aortic hiatus

11 / 40

At which vertebral level does the aorta pass through the diaphragm?

T10

T12

12 / 40

The main action of the diaphragm contributes to which respiratory phase?

Expiration

Inspiration

Both phases equally

13 / 40

Which structure anchors the diaphragm to the lumbar vertebrae?

Psoas muscle

Crura

Rectus abdominis

14 / 40

Which major blood vessel passes through the diaphragm at the level of T8?

Aorta

Inferior vena cava

Esophagus

15 / 40

The muscle fibers of the diaphragm converge at which structure?

Central tendon

Costal margin

Lumbar vertebrae

16 / 40

The diaphragm helps in which of the following activities?

Chewing

Walking

Coughing

17 / 40

The diaphragm contracts in response to signals from which part of the brain?

Cerebellum

Medulla oblongata

Thalamus

18 / 40

Which muscle acts as an antagonist to the diaphragm during forced expiration?

Abdominal muscles

Intercostal muscles

Pectoral muscles

19 / 40

The diaphragm receives blood supply from which arteries?

Renal arteries

Phrenic arteries

Coronary arteries

20 / 40

The diaphragm is innervated by which cervical nerve roots?

C6, C7, C8

C1, C2, C3

C3, C4, C5

21 / 40

The diaphragm separates which two cavities?

Thoracic and abdominal cavities

Pelvic and abdominal cavities

Cranial and thoracic cavities

22 / 40

The diaphragm forms the floor of which cavity?

Abdominal cavity

Pelvic cavity

Thoracic cavity

23 / 40

Which of the following does not pass through the diaphragm?

Trachea

Esophagus

Aorta

24 / 40

Which nerve innervates the diaphragm?

Phrenic nerve

Vagus nerve

Sciatic nerve

25 / 40

Which structure passes through the diaphragm at the level of T10?

Inferior vena cava

Esophagus

Aorta

26 / 40

Which of the following is not a function of the diaphragm?

Production of bile

Respiration

Separation of thoracic and abdominal cavities

27 / 40

Which organ lies directly below the diaphragm on the right side?

Liver

Stomach

Spleen

28 / 40

What happens to the diaphragm during exhalation?

Contracts and flattens

Relaxes and rises

Moves laterally

29 / 40

The diaphragmatic muscle fibers are classified as?

Smooth muscle

Cardiac muscle

Striated muscle

30 / 40

What is the function of the diaphragm during sneezing?

Absorbs shock

Prevents air entry

Helps expel air forcefully

31 / 40

Which structure does not pierce the diaphragm?

Esophagus

Trachea

Inferior vena cava

32 / 40

What is the central tendon of the diaphragm?

A muscle

A ligament

A strong aponeurosis

33 / 40

Which muscle contracts simultaneously with the diaphragm during normal breathing?

Biceps brachii

Intercostal muscles

Deltoid muscle

34 / 40

During inspiration, the diaphragm moves in which direction?

Downward

Upward

Laterally

35 / 40

Which condition can result from diaphragmatic paralysis?

Respiratory failure

Heart attack

Kidney failure

36 / 40

The diaphragm is primarily involved in which process?

Digestion

Circulation

Breathing

37 / 40

The diaphragm assists in increasing which dimension of the thoracic cavity during inhalation?

Vertical

Horizontal

Anteroposterior

38 / 40

The diaphragm is attached to which part of the sternum?

Body

Manubrium

Xiphoid process

39 / 40

The diaphragm receives sensory innervation from which nerve?

Vagus nerve

Trigeminal nerve

Phrenic nerve

40 / 40

What is the primary action of the diaphragm during quiet breathing?

Compresses abdominal organs

Lowers thoracic pressure

Raises thoracic pressure

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Diaphragm Flashcards

The diaphragm is primarily involved in which process?

Breathing

Which nerve innervates the diaphragm?

Phrenic nerve

The diaphragm separates which two cavities?

Thoracic and abdominal cavities

What shape is the diaphragm in its relaxed state?

Dome-shaped

Which structure passes through the diaphragm at the level of T10?

Esophagus

What is the central tendon of the diaphragm?

A strong aponeurosis

During inspiration, the diaphragm moves in which direction?

Downward

The diaphragm is composed of which type of muscle tissue?

Skeletal muscle

Which major blood vessel passes through the diaphragm at the level of T8?

Inferior vena cava

The diaphragm assists in increasing which dimension of the thoracic cavity during inhalation?

Vertical

Which of the following is not a function of the diaphragm?

Production of bile

At which vertebral level does the aorta pass through the diaphragm?

T12

The diaphragm is attached to which part of the sternum?

Xiphoid process

Which muscle contracts simultaneously with the diaphragm during normal breathing?

Intercostal muscles

Which structure does not pierce the diaphragm?

Trachea

How many openings are there in the diaphragm for major structures?

Three

The diaphragm receives blood supply from which arteries?

Phrenic arteries

The diaphragm contracts in response to signals from which part of the brain?

Medulla oblongata

What is the function of the diaphragm during sneezing?

Helps expel air forcefully

The diaphragm is anchored to the spine by what structure?

Crura

Which of the following does not pass through the diaphragm?

Trachea

The muscle fibers of the diaphragm converge at which structure?

Central tendon

The diaphragm forms the floor of which cavity?

Thoracic cavity

Which event occurs when the diaphragm contracts?

Inhalation

What is the primary action of the diaphragm during quiet breathing?

Lowers thoracic pressure

Which condition can result from diaphragmatic paralysis?

Respiratory failure

The diaphragm has openings for all of the following except?

Trachea

The diaphragmatic muscle fibers are classified as?

Striated muscle

Which organ lies directly below the diaphragm on the right side?

Liver

What happens to the diaphragm during exhalation?

Relaxes and rises

Which structure anchors the diaphragm to the lumbar vertebrae?

Crura

The diaphragm receives sensory innervation from which nerve?

Phrenic nerve

The diaphragm helps in which of the following activities?

Coughing

Which side of the diaphragm is higher due to the liver?

Right side

Diaphragmatic hernia usually occurs in which area?

Esophageal hiatus

The diaphragm is innervated by which cervical nerve roots?

C3, C4, C5

Which muscle acts as an antagonist to the diaphragm during forced expiration?

Abdominal muscles

The diaphragm is part of which system in the body?

Respiratory system

The main action of the diaphragm contributes to which respiratory phase?

Inspiration

Which structure does the phrenic nerve pass through before reaching the diaphragm?

Mediastinum

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admin7 days ago

0 14 2 minutes read