20. The Lymphatic System

How are collecting lymphatic vessels different from veins?

Entry of lymph into the lymphatic capillaries is promoted by which of the following? a. one-way minivalves formed by overlapping endothelial cells, b. the respiratory pump, c. the skeletal muscle pump, d. greater fluid pressure in the interstitial space.

Blood plasma and lymph are identical except for their respective locations in the body.

Which of the following lymphatic trunks is unpaired?

Compare and contrast blood, interstitial fluid, and lymph.

All lymph is eventually returned to circulation via the __________.

Lymphatic vessels a. serve as sites for immune surveillance, b. filter lymph, c. transport leaked plasma proteins and fluids to the cardiovascular system, d. are represented by vessels that resemble arteries, capillaries, and veins.

Multiple Choice More than one choice may apply. Which of the following connect to the lymph node at the hilum? a. Afferent lymphatic vessels b. Efferent lymphatic vessels c. Trabeculae d. Anchoring filaments