We have provided 50 MCQs on Lymphatic System, Unit-3, 1st semester, Human Anatomy and physiology, B. Pharm.
We have covered following topics.
Lymphatic organs and tissues, lymphatic vessels, lymph circulation and functions of lymphatic system.
Table of Contents
MCQ on Lymphatic system
Which of the following is a primary function of the lymphatic system?
- A) Oxygen transport
- B) Nutrient absorption
- C) Immune response and fluid balance
- D) Blood clotting
Correct Answer: C) Immune response and fluid balance
Lymph nodes are important components of the lymphatic system. What is their primary function?
- A) Production of lymph
- B) Filtration of blood
- C) Filtration of lymph and activation of immune responses
- D) Digestion of dietary fats
Correct Answer: C) Filtration of lymph and activation of immune responses
Which of the following is not considered a lymphatic organ?
- A) Tonsils
- B) Spleen
- C) Liver
- D) Thymus
Correct Answer: C) Liver
Lymphatic vessels are similar to which other type of vessels in the body?
- A) Arteries
- B) Veins
- C) Capillaries
- D) Bronchi
Correct Answer: B) Veins
Where are the tonsils, a part of the lymphatic system, located in the human body?
- A) Throat
- B) Abdomen
- C) Brain
- D) Liver
Correct Answer: A) Throat
What is the primary function of the thymus gland in the lymphatic system?
- A) Filtration of lymph
- B) Production of lymphocytes
- C) Storage of lymph
- D) Digestion of dietary fats
Correct Answer: B) Production of lymphocytes
Which of the following is NOT a function of lymphatic vessels?
- A) Transporting excess interstitial fluid
- B) Absorbing dietary fats from the small intestine
- C) Filtering red blood cells
- D) Facilitating immune responses
Correct Answer: C) Filtering red blood cells
How does lymph move through the lymphatic vessels?
- A) Under the force of the heart’s pumping action
- B) By the contraction of smooth muscle in the vessel walls
- C) Passively, relying on gravity
- D) Through the contraction of skeletal muscles surrounding the vessels
Correct Answer: D) Through the contraction of skeletal muscles surrounding the vessels
The spleen is responsible for:
- A) Lymph production
- B) Filtration of blood and immune responses
- C) Digestion of dietary fats
- D) Oxygen transport
Correct Answer: B) Filtration of blood and immune responses
What is the primary role of lymphatic capillaries in the body?
- A) Absorbing excess interstitial fluid and proteins
- B) Transporting oxygen to cells
- C) Synthesizing antibodies
- D) Producing red blood cells
Correct Answer: A) Absorbing excess interstitial fluid and proteins
Lymphatic vessels are important for maintaining fluid balance in the body by:
- A) Transporting excess interstitial fluid back to the bloodstream
- B) Filtering toxins from the bloodstream
- C) Producing antibodies
- D) Oxygen transport
Correct Answer: A) Transporting excess interstitial fluid back to the bloodstream
What is the primary function of the lymph nodes in the lymphatic system?
- A) Production of lymph
- B) Filtration of lymph and activation of immune responses
- C) Storage of lymph
- D) Digestion of dietary fats
Correct Answer: B) Filtration of lymph and activation of immune responses
Which of the following statements about lymphatic circulation is true?
- A) Lymphatic vessels have a closed-end system.
- B) Lymph flows only in one direction, away from the heart.
- C) Lymphatic vessels contain a pump similar to the heart.
- D) Lymph flows through lymph nodes but not through the spleen.
Correct Answer: C) Lymphatic vessels contain a pump similar to the heart.
The cisterna chyli is a dilated sac at the base of the thoracic duct that serves as a storage area for lymph. Where is it located?
- A) In the liver
- B) In the spleen
- C) In the neck
- D) In the abdomen
Correct Answer: D) In the abdomen
Which lymphatic organ plays a crucial role in immune system maturation during childhood but diminishes in size and function with age?
- A) Spleen
- B) Tonsils
- C) Thymus
- D) Lymph nodes
Correct Answer: C) Thymus
What is the primary function of the lymphatic system in relation to the circulatory system?
- A) Pumping blood to vital organs
- B) Producing red blood cells
- C) Draining excess tissue fluid and returning it to the bloodstream
- D) Transporting oxygen to cells
Correct Answer: C) Draining excess tissue fluid and returning it to the bloodstream
Lymphatic vessels are responsible for absorbing dietary fats from which organ?
- A) Stomach
- B) Small intestine
- C) Liver
- D) Kidneys
Correct Answer: B) Small intestine
The lymphatic system plays a crucial role in immune defense by:
- A) Regulating blood pressure
- B) Filtering red blood cells
- C) Producing insulin
- D) Transporting immune cells and antibodies
Correct Answer: D) Transporting immune cells and antibodies
Lymph nodes are interconnected by lymphatic vessels and are most commonly found in which areas of the body?
- A) Heart and lungs
- B) Brain and spinal cord
- C) Neck, armpits, and groin
- D) Liver and spleen
Correct Answer: C) Neck, armpits, and groin
Which of the following is a primary function of the spleen in the lymphatic system?
- A) Production of lymph
- B) Filtration of lymphatic fluid
- C) Production of red blood cells
- D) Filtration of blood and removal of damaged blood cells
Correct Answer: D) Filtration of blood and removal of damaged blood cells
The thoracic duct is a major lymphatic vessel responsible for draining lymph from the lower half of the body and the left upper limb. Where does it empty into the circulatory system?
- A) Right subclavian vein
- B) Left subclavian vein
- C) Aorta
- D) Pulmonary artery
Correct Answer: B) Left subclavian vein
Which of the following is a function of the tonsils in the lymphatic system?
- A) Production of lymphocytes
- B) Filtration of blood
- C) Filtration of lymph
- D) Defense against inhaled and ingested pathogens
Correct Answer: D) Defense against inhaled and ingested pathogens
The lymphatic system helps maintain fluid balance in the body by:
- A) Transporting excess interstitial fluid away from the heart
- B) Filtering toxins from the blood
- C) Producing digestive enzymes
- D) Synthesizing antibodies
Correct Answer: A) Transporting excess interstitial fluid away from the heart
The primary function of lymphatic capillaries is to:
- A) Transport oxygen to cells
- B) Absorb excess interstitial fluid and proteins
- C) Produce insulin
- D) Transport carbon dioxide away from cells
Correct Answer: B) Absorb excess interstitial fluid and proteins
Which lymphatic organ plays a role in immune system development during early childhood but tends to decrease in size and function with age?
- A) Tonsils
- B) Spleen
- C) Thymus
- D) Lymph nodes
Correct Answer: C) Thymus
The lymphatic vessels contain valves that help maintain the one-way flow of lymph. What is the purpose of these valves?
- A) To prevent backflow of lymph
- B) To regulate blood pressure
- C) To filter lymphatic fluid
- D) To produce lymphocytes
Correct Answer: A) To prevent backflow of lymph
Which lymphatic organ filters lymph and is often referred to as the “guardian of the immune system”?
- A) Spleen
- B) Tonsils
- C) Thymus
- D) Appendix
Correct Answer: B) Tonsils
What is the role of lymph nodes in the immune system?
- A) Production of lymph
- B) Storage of lymph
- C) Filtration of lymph and activation of immune responses
- D) Digestion of dietary fats
Correct Answer: C) Filtration of lymph and activation of immune responses
Which lymphatic vessel collects lymph from the upper right portion of the body, including the right arm, right side of the head, and right thorax?
- A) Right jugular trunk
- B) Right bronchomediastinal trunk
- C) Right lumbar trunk
- D) Right subclavian trunk
Correct Answer: A) Right jugular trunk
The lymphatic system plays a vital role in maintaining fluid balance by returning excess interstitial fluid to the bloodstream. What is this excess fluid called?
- A) Blood plasma
- B) Lymphatic fluid
- C) Interstitial fluid
- D) Serum
Correct Answer: C) Interstitial fluid
The primary function of the lymphatic system in immune defense includes:
- A) Production of antibodies
- B) Transporting oxygen to cells
- C) Filtration of red blood cells
- D) Removal of carbon dioxide
Correct Answer: A) Production of antibodies
Which of the following statements about lymphatic vessels is accurate?
- A) Lymphatic vessels are lined with smooth muscle that actively pumps lymph.
- B) Lymphatic vessels are only found in the lower extremities.
- C) Lymphatic vessels transport oxygen to body tissues.
- D) Lymphatic vessels carry lymph toward the heart.
Correct Answer: D) Lymphatic vessels carry lymph toward the heart.
The thoracic duct is the largest lymphatic vessel in the human body and drains lymph from most of the body. Where does it originate?
- A) Right subclavian vein
- B) Left subclavian vein
- C) Cisterna chyli
- D) Right atrium of the heart
Correct Answer: C) Cisterna chyli
Which lymphatic organ is responsible for filtering and monitoring the blood for foreign substances, including bacteria and viruses?
- A) Thymus
- B) Spleen
- C) Tonsils
- D) Lymph nodes
Correct Answer: B) Spleen
Lymphatic vessels play a crucial role in the absorption of dietary fats. Which vessel is responsible for transporting absorbed fats to the bloodstream?
- A) Thoracic duct
- B) Right lymphatic duct
- C) Cisterna chyli
- D) Right subclavian vein
Correct Answer: A) Thoracic duct
What is the primary role of lymph nodes in the lymphatic system’s immune function?
- A) Production of lymphocytes
- B) Filtration of lymph and activation of immune responses
- C) Storage of lymph
- D) Digestion of dietary fats
Correct Answer: B) Filtration of lymph and activation of immune responses
Which lymphatic organ produces hormones known as thymosins, important for the development of T lymphocytes (T cells)?
- A) Spleen
- B) Tonsils
- C) Thymus
- D) Lymph nodes
Correct Answer: C) Thymus
What is the primary function of lymphatic capillaries in the body?
- A) To transport oxygen to cells
- B) To filter toxins from the bloodstream
- C) To absorb excess interstitial fluid and proteins
- D) To produce digestive enzymes
Correct Answer: C) To absorb excess interstitial fluid and proteins
Lymph nodes are often found in clusters in specific regions of the body. Which of the following is NOT a common location for lymph nodes?
- A) Neck
- B) Armpit (axilla)
- C) Lower back
- D) Groin (inguinal)
Correct Answer: C) Lower back
The lymphatic system helps prevent the buildup of excess interstitial fluid by:
- A) Transporting excess fluid to the liver for processing
- B) Facilitating the absorption of interstitial fluid by body cells
- C) Transporting excess fluid to the kidneys for excretion
- D) Transporting excess fluid back to the bloodstream
Correct Answer: D) Transporting excess fluid back to the bloodstream
Which lymphatic vessel collects lymph from the right side of the head, neck, and upper limb, as well as the right thorax?
- A) Right subclavian vein
- B) Right bronchomediastinal trunk
- C) Right jugular trunk
- D) Right lumbar trunk
Correct Answer: C) Right jugular trunk
In the lymphatic system, what is the role of lymphatic nodules (also known as lymphatic follicles)?
- A) To produce lymphocytes
- B) To store excess lymph
- C) To filter lymph for foreign particles
- D) To pump lymph toward the heart
Correct Answer: A) To produce lymphocytes
The lymphatic system plays a significant role in maintaining tissue fluid balance. This function helps prevent:
- A) Dehydration
- B) Edema (swelling)
- C) Anemia
- D) High blood pressure
Correct Answer: B) Edema (swelling)
What is the primary function of the cisterna chyli in the lymphatic system?
- A) Filtration of lymph
- B) Storage of lymph
- C) Transporting lymph to the heart
- D) Producing lymphocytes
Correct Answer: B) Storage of lymph
The lymphatic system aids in the body’s defense against infections by:
- A) Filtering lymphatic fluid for nutrients
- B) Transporting oxygen to immune cells
- C) Transporting immune cells and antibodies
- D) Producing digestive enzymes
Correct Answer: C) Transporting immune cells and antibodies
Lymphatic vessels have specialized one-way valves to ensure the proper flow of lymph. What is the consequence of valve dysfunction in these vessels?
- A) Increased lymph flow
- B) Decreased lymph flow
- C) Blood clot formation
- D) Increased red blood cell production
Correct Answer: B) Decreased lymph flow
The lymphatic system serves as a route for:
- A) Transporting glucose to cells
- B) Removing toxins from the body
- C) Transporting lymphocytes to the liver
- D) Returning leaked plasma proteins to the bloodstream
Correct Answer: D) Returning leaked plasma proteins to the bloodstream
Lymph nodes play a crucial role in immune responses. What happens when pathogens or foreign substances are detected in lymph nodes?
- A) Lymph nodes produce insulin
- B) Lymph nodes initiate the clotting process
- C) Lymph nodes filter and activate immune responses
- D) Lymph nodes pump lymph to the spleen
Correct Answer: C) Lymph nodes filter and activate immune responses
The spleen is involved in immune defense, particularly against bloodborne pathogens. Which term describes the process of removing damaged or old blood cells from circulation in the spleen?
- A) Erythropoiesis
- B) Hemolysis
- C) Lymphopoiesis
- D) Phagocytosis
Correct Answer: B) Hemolysis
The lymphatic system is a critical component of the immune system. Which of the following best describes its role in immunity?
- A) The lymphatic system produces red blood cells.
- B) The lymphatic system transports hormones to target cells.
- C) The lymphatic system filters and activates immune responses.
- D) The lymphatic system regulates blood pressure.
Correct Answer: C) The lymphatic system filters and activates immune responses.
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Semester- 1
- Human Anatomy & Physiology