Portage Learning Anatomy & Physiology
2 Module 5 Exam: Lymphatic System
Questions and Answers | Latest Version
| 2025/2026 | Correct & Verified
What is the main function of the lymphatic system?
✔✔ To return excess fluid from tissues back to the bloodstream and aid in immune defense.
Where are lymph nodes commonly located in the body?
✔✔ In the neck, armpits, and groin.
What is the role of lymph nodes in immunity?
✔✔ They filter lymph and trap pathogens, which are then destroyed by immune cells.
What is lymph?
✔✔ A clear fluid that contains white blood cells and travels through lymphatic vessels.
What type of white blood cells are most abundant in lymph nodes?
✔✔ Lymphocytes.
1
,What is the function of the spleen in the lymphatic system?
✔✔ It filters blood, removes old red blood cells, and helps fight infection.
Where is the spleen located?
✔✔ In the upper left quadrant of the abdomen, near the stomach.
What is the thymus responsible for?
✔✔ The maturation of T lymphocytes (T cells).
What happens to the thymus after puberty?
✔✔ It gradually shrinks and becomes less active.
What do tonsils do in the lymphatic system?
✔✔ They trap and destroy pathogens entering through the mouth and nose.
What are Peyer's patches?
✔✔ Lymphatic tissue in the small intestine that monitors gut bacteria.
2
, What helps lymph move through lymphatic vessels?
✔✔ Skeletal muscle contractions and valves that prevent backflow.
What are the smallest lymphatic vessels called?
✔✔ Lymphatic capillaries.
What structure absorbs dietary fats in the small intestine?
✔✔ Lacteals.
What is chyle?
✔✔ A milky fluid of fat and lymph absorbed from the intestines.
Which large lymphatic duct drains most of the body?
✔✔ The thoracic duct.
Where does the thoracic duct empty lymph?
✔✔ Into the left subclavian vein.
3
2 Module 5 Exam: Lymphatic System
Questions and Answers | Latest Version
| 2025/2026 | Correct & Verified
What is the main function of the lymphatic system?
✔✔ To return excess fluid from tissues back to the bloodstream and aid in immune defense.
Where are lymph nodes commonly located in the body?
✔✔ In the neck, armpits, and groin.
What is the role of lymph nodes in immunity?
✔✔ They filter lymph and trap pathogens, which are then destroyed by immune cells.
What is lymph?
✔✔ A clear fluid that contains white blood cells and travels through lymphatic vessels.
What type of white blood cells are most abundant in lymph nodes?
✔✔ Lymphocytes.
1
,What is the function of the spleen in the lymphatic system?
✔✔ It filters blood, removes old red blood cells, and helps fight infection.
Where is the spleen located?
✔✔ In the upper left quadrant of the abdomen, near the stomach.
What is the thymus responsible for?
✔✔ The maturation of T lymphocytes (T cells).
What happens to the thymus after puberty?
✔✔ It gradually shrinks and becomes less active.
What do tonsils do in the lymphatic system?
✔✔ They trap and destroy pathogens entering through the mouth and nose.
What are Peyer's patches?
✔✔ Lymphatic tissue in the small intestine that monitors gut bacteria.
2
, What helps lymph move through lymphatic vessels?
✔✔ Skeletal muscle contractions and valves that prevent backflow.
What are the smallest lymphatic vessels called?
✔✔ Lymphatic capillaries.
What structure absorbs dietary fats in the small intestine?
✔✔ Lacteals.
What is chyle?
✔✔ A milky fluid of fat and lymph absorbed from the intestines.
Which large lymphatic duct drains most of the body?
✔✔ The thoracic duct.
Where does the thoracic duct empty lymph?
✔✔ Into the left subclavian vein.
3
