Lymphatic System Anatomy & Physiology Flashcards
6 cards from real CLT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Lymphatic System Anatomy & Physiology flashcards as text
What is the primary function of the lymphatic system in the body?
Answer: Returning interstitial fluid to the bloodstream and supporting immune defense
The lymphatic system collects excess interstitial fluid and returns it to the venous circulation while also transporting immune cells.
Which structures are responsible for filtering lymph fluid as it travels through the lymphatic system?
Answer: Lymph nodes
Lymph nodes act as filtration stations where lymph is cleansed of pathogens and debris before re-entering circulation.
The thoracic duct drains lymph from which portion of the body?
Answer: The entire body except the right upper quadrant
The thoracic duct is the largest lymphatic vessel and drains approximately three-quarters of the body, emptying into the left subclavian vein.
What distinguishes lymphatic capillaries from blood capillaries?
Answer: Lymphatic capillaries have overlapping endothelial cells acting as one-way valves
The overlapping endothelial 'flap' cells of lymphatic capillaries allow large molecules and excess fluid to enter but prevent backflow.
Where does the right lymphatic duct empty into the circulation?
Answer: Right subclavian vein
The right lymphatic duct empties lymph from the right upper quadrant into the right subclavian vein at the venous angle.
Lacteals are specialized lymphatic capillaries found in which organ?
Answer: Small intestine villi
Lacteals in the small intestine absorb dietary fats and fat-soluble vitamins, forming chyle that enters the thoracic duct.