Free Lymphatic System MCQs with Answers
19 Lymphatic System MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The lymphatic system returns excess tissue fluid to the bloodstream and supports immune defence through lymph, lymph vessels, lymph nodes, the spleen, thymus and tonsils. It also transports absorbed fats from intestinal lacteals, which distinguishes lymphatic circulation from the blood vascular system.
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19 questions
- A. tissue fluid that drains into blind ending lymph capillaries
- B. blood plasma filtered by the kidney
- C. the secretion of the lymph nodes
- D. bile leaving the liver
Explanation: Plasma is forced out of the capillaries at their arterial end to become tissue fluid, most of which returns to the blood at the venous…
Correct answer: tissue fluid that drains into blind ending lymph capillaries- A. pump lymph around the body
- B. produce red blood cells
- C. filter lymph and provide a site where lymphocytes multiply
- D. absorb glucose from the small intestine
Explanation: Nodes are packed with macrophages that trap bacteria and debris carried in the lymph, and with lymphocytes that divide there when an…
Correct answer: filter lymph and provide a site where lymphocytes multiply- A. glucose
- B. amino acids
- C. water and mineral ions
- D. the products of fat digestion
Explanation: Fatty acids and glycerol are reassembled into fats inside the villus cells and packaged into droplets too large for the blood capillaries…
Correct answer: the products of fat digestion- A. blood cannot leave the limb through the veins
- B. excess tissue fluid cannot be drained away and accumulates
- C. the arteries dilate and overfill the tissue
- D. plasma proteins are digested in the tissue spaces
Explanation: The lymphatic system is the only route by which the surplus tissue fluid returns to the blood, so blocking it lets fluid build up in the…
Correct answer: excess tissue fluid cannot be drained away and accumulates- A. Lymphocytes
- B. Monocytes
- C. Neutrophils
- D. Eosinophils
Explanation: Neutrophils are the most abundant WBCs (60-70%), functioning as primary phagocytes against bacteria.
Correct answer: Neutrophils- A. Return tissue fluid to blood
- B. Fat absorption
- C. Immune defense
- D. Oxygen transport
Explanation: Oxygen transport is a function of blood, not lymph. Lymph returns tissue fluid, absorbs fats, and contains immune cells.
Correct answer: Oxygen transport- A. Deficiency of oxygen
- B. Loss of nerve signals
- C. Drop in blood pressure
- D. Excess fluid accumulation in tissue
Explanation: The lymphatic system is the only route by which surplus tissue fluid returns to the blood, so blocking it lets fluid collect between the…
Correct answer: Excess fluid accumulation in tissue- A. Plasma
- B. Matrix
- C. Lymph
- D. Blood
Explanation: Surplus tissue fluid that drains into the blind ending lymph capillaries is called lymph, and it travels one way through nodes and along…
Correct answer: Lymph- A. Spleen
- B. Kidney
- C. Liver
- D. Pancreas
Explanation: The spleen filters blood and its macrophages remove old or damaged RBCs, recycling their iron and other components.
Correct answer: Spleen- A. Movement of viscera
- B. Breathing movements
- C. Valves
- D. All of these
Explanation: Lymph is moved by skeletal-muscle and visceral movements and by pressure changes during breathing, while valves prevent its backward flow…
Correct answer: All of these- A. Liver and Gall bladder
- B. Spleen and Thymus gland
- C. Thyroid and Parathyroid glands
- D. Lymph vessels and Bone marrow
Explanation: The correct answer is Option D: lymph vessels and bone marrow. Bone marrow is a key component in the production of lymphocytes, which are…
Correct answer: Lymph vessels and Bone marrow- A. Neck region
- B. Axilla
- C. Groin
- D. Spleen
Explanation: Lymph nodes are small, bean-shaped structures located throughout the body, including the neck, armpits, groin, and other areas.
Correct answer: Spleen- A. Lymphoid masses
- B. Lymph vessels
- C. Spleen
- D. Lungs
Explanation: The four organs of the lymphatic system are bone marrow, spleen, thymus, lymph nodes, and lymphatic vessels.
Correct answer: Lungs- A. Heart, activity of smooth muscles and valves
- B. Activity of skeletal muscles, heart and breathing movements
- C. Breathing movements, activity of skeletal muscles and valves
- D. Exercise, breathing movements and heart
Explanation: Option[a] heart has no role in lymph flowOption[b] Heart has no role in lymphOption [c] All mentioned factors affect the flow of lymph in…
Correct answer: Breathing movements, activity of skeletal muscles and valves- A. Subclavian Vein
- B. Renal Vein
- C. Pulmonary Vein
- D. Hepatic Portal Vein
Explanation: a) Subclavian VeinThe subclavian veins are major veins located in the upper chest region, near the collarbone.
Correct answer: Subclavian Vein- A. Superior vena cava
- B. Subclavian Vein
- C. Inferior vena cava
- D. Renal vein
Explanation: Lymph capillaries join to form larger and larger lymph vessels; and ultimately form the thoracic lymph duct, which opens into the…
Correct answer: Subclavian Vein- A. Lymph Nodes
- B. Lymphoid organs
- C. Lymph capillaries
- D. Subclavian vein
Explanation: Lymph eventually returns to the bloodstream by entering the subclavian vein, where it mixes with the blood and is recirculated through the…
Correct answer: Subclavian vein- A. Abdominal duct
- B. Thoracic duct
- C. Femoral duct
- D. Subclavian duct
Explanation: The thoracic duct is the largest lymphatic duct in the body. It collects lymph from most of the body (except the right arm and right side…
Correct answer: Thoracic duct- A. Tonsils
- B. Pancreas
- C. Spleen
- D. Thymus
Explanation: Option C is correct.The largest body of lymphoid tissue in the human body is the spleen.
Correct answer: SpleenLymphatic System MCQs: common questions
Are these Lymphatic System MCQs free?
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How many Lymphatic System MCQs are on this page?
There are 19 Lymphatic System MCQs in the Biology bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Lymphatic System MCQ have an explanation?
Yes. Each Lymphatic System question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
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