The role of the ________ is to trap and remove bacteria or other pathogens entering the throat.

Which lymphatic organ's major job is to destroy worn out red blood cells and return some of the products to the liver?

The thymus gland is most active during _______________.

What lymphoid organ stores platelets and acts as a blood reservoir?

The lymph tissue found within the walls of the small intestine are called __________.

Where is the thymus gland located?

___________ filter lymph before it is returned to the blood.

Lymphatic vessels share all but which of these characteristics with veins of the cardiovascular system?

Harmful or disease-casing microorganisms are called __________.

____________ is made of excess tissue fluid and plasma proteins.