alleryStart learning →What keeps lymph moving through the lymphatic vessels toward the heart?
APumping by the left ventricle
BSuction from the thoracic duct
CBody movement and breathing
DBeating of vessel cilia
Answer & Solution
Correct answer: C. Body movement and breathing
1. A major difference between the lymphatic and cardiovascular systems is that lymph is not actively pumped by the heart.
2. It is forced through the vessels by the movements of the body, the contraction of skeletal muscles and breathing.
3. One-way semi-lunar valves in the lymphatic vessels stop backflow, so all of that squeezing moves lymph toward the heart.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 21 "The Lymphatic and Immune System", section 21.1 Anatomy of the Lymphatic and Immune Systems_
Keep practising The Lymphatic and Immune System
Browse all The Lymphatic and Immune System questions for NCK Licensing Exam (Nursing), or explore more Anatomy & Physiology topics.
Related questions
Order the inflammatory responseMatch each antibody to its jobActive or passive immunity?Sort the three lines of defenceImmune and lymphatic bingoIn systemic lupus erythematosus, soluble antigens and antibodies precipitate along blood vWhich drug is used against anaphylactic shock because it raises blood pressure and relaxesWhy must the influenza vaccine be reformulated for each flu season?