Exam Complete 250 Questions And Answers/Newest
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1. What is the primary function of the lymphatic system?
A) Transport oxygen
B) Regulate blood pressure
C) Return interstitial fluid to the bloodstream
D) Produce red blood cells
Answer: C
Rationale: The lymphatic system collects excess interstitial fluid and returns it to the venous circulation.
2. Lymphatic fluid is called:
A) Plasma
B) Lymph
C) Serum
D) Exudate
Answer: B
Rationale: Lymph is the clear fluid transported through lymphatic vessels.
3. Which structure filters lymph?
A) Lymph node
B) Capillary
C) Arteriole
D) Venule
Answer: A
Rationale: Lymph nodes filter lymph and support immune surveillance.
4. The smallest lymphatic vessels are:
,A) Collecting ducts
B) Lymphatic trunks
C) Initial lymphatics
D) Thoracic duct
Answer: C
Rationale: Initial lymphatics are blind-ended capillaries that absorb interstitial fluid.
5. Which duct drains the majority of the body?
A) Right lymphatic duct
B) Thoracic duct
C) Cisterna chyli
D) Subclavian duct
Answer: B
Rationale: The thoracic duct drains lymph from most of the body into the left subclavian vein.
6. The right lymphatic duct drains:
A) Right upper quadrant
B) Left upper quadrant
C) Both legs
D) Entire abdomen
Answer: A
Rationale: The right lymphatic duct drains the right head, neck, thorax, and upper limb.
7. Lymphatic vessels contain valves that:
A) Slow lymph flow
B) Prevent backflow
C) Produce lymph
D) Filter bacteria
Answer: B
Rationale: Valves ensure one-way flow of lymph toward the venous system.
8. Lymph flow is primarily driven by:
2
,A) Heart contractions
B) Skeletal muscle contractions
C) Arterial pressure
D) Respiratory depression
Answer: B
Rationale: Muscle activity, breathing, and vessel contraction promote lymph movement.
9. Which condition results from lymphatic obstruction?
A) Lymphedema
B) Hypertension
C) Anemia
D) Diabetes
Answer: A
Rationale: Lymphedema is swelling caused by impaired lymphatic drainage.
10. Primary lymphedema is caused by:
A) Surgery
B) Radiation
C) Congenital lymphatic abnormality
D) Infection
Answer: C
Rationale: Primary lymphedema results from inherited or developmental lymphatic defects.
11. Secondary lymphedema is most commonly caused by:
A) Congenital defect
B) Lymph node removal or radiation
C) Aging
D) Dehydration
Answer: B
Rationale: Secondary lymphedema follows damage to lymphatic structures.
12. Which is a common cause of secondary lymphedema in tropical regions?
3
, A) Filariasis
B) Influenza
C) Measles
D) Chickenpox
Answer: A
Rationale: Lymphatic filariasis is a parasitic infection that blocks lymphatic vessels.
13. Stage 0 lymphedema is also called:
A) Latent stage
B) Reversible stage
C) Spontaneously reversible
D) Elephantiasis
Answer: A
Rationale: Stage 0 has no visible swelling but impaired lymphatic transport.
14. Pitting edema is most characteristic of which lymphedema stage?
A) Stage 0
B) Stage I
C) Stage II
D) Stage III
Answer: B
Rationale: Stage I lymphedema is soft and pitting and may reduce with elevation.
15. Stage II lymphedema is characterized by:
A) Pitting edema that resolves
B) Non-pitting fibrosis
C) No swelling
D) Elephantiasis
Answer: B
Rationale: Stage II involves tissue fibrosis and less pitting.
16. Stage III lymphedema is also known as:
4