Tiny closed-ended vessels with overlapping endothelial flaps take up fluid left behind in tissue spaces. Which vessels are these?

A specialized vessel in a small-intestine villus absorbs dietary lipids into the return pathway. Which structure is it?

Small bean-shaped filters clustered in the neck, armpits and groin screen returning fluid before it reaches veins. Which structures are these?

A blood-rich organ in the upper left abdomen removes worn-out erythrocytes and monitors blood-borne antigens. Which organ is it?

A glandlike organ above the heart is most active in childhood and is where many T cells mature. Which organ is it?

The largest duct ascends from the abdomen through the chest and drains most of the body to the left venous angle. Which duct is it?

The smaller terminal duct drains only the upper body quadrant not served by the larger duct. Which duct is it?

An enlarged sac in the upper abdomen receives intestinal and lumbar trunks before the main duct begins. Which structure is it?

Vessels entering the convex surface of a bean-shaped filter bring fluid into that organ. Which vessels are they?

Vessels leaving the hilum of a bean-shaped filter carry fluid away from that organ. Which vessels are they?

Which lymphatic vessels are so permeable that proteins, cell debris, and even bacteria from tissue spaces can enter them?

After fluid leaves the blind-ended capillaries in a tissue bed, which segment usually carries it toward regional filters?

A lymph node has more of one vessel type than the other, which slows lymph inside the node so it can be filtered. Which vessel type is more numerous?

New lymphocytes made in a lymph node leave the node to join the circulation. Which vessel type carries them out?

Several outgoing vessels from a body region merge into a larger regional channel before reaching a duct. What is that channel called?

In the return route, regional trunks empty into which vessels just before the contents enter the venous bloodstream?

Fluid from the left leg travels through the main duct. Into which vein does that duct empty near the neck?

Fluid from the arm on the same side as the liver reaches the small terminal duct. Into which vein does that duct empty?

A paired mass sits in the side wall of the oropharynx and helps trap pathogens entering by food or air. Which organ is it?

A single mass high in the nasopharynx is also called the adenoid when enlarged. Which organ is it?

Clusters of tissue at the base of the tongue help guard the entrance to the throat. Which organs are these?

Which lymphoid organ is largest in childhood, then shrinks and is mostly replaced by fat and connective tissue in adults?

White pulp around small arteries samples antigens carried in blood rather than fluid from tissue spaces. Which organ contains it?

Red pulp in this organ holds a reserve of platelets that can be released into the blood when needed. Which organ contains this tissue?

A ring of tissue around the openings from the nose and mouth traps pathogens entering the pharynx. What is this group called?

If vessels in a lower leg scar shut and cannot move excess tissue fluid onward, what visible change is most likely?

After armpit filters and their vessels are removed, the arm on that side stays swollen. Which normal job has been lost?

When regional return fails, leaked plasma proteins remain between cells and pull in water. What consequence does this cause?

If the vessels inside intestinal villi cannot drain, which transport function is impaired?

If one-way valves in collecting vessels of the foot fail, what happens to return from that dependent region?