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The white pulp of the spleen is populated by

Lymphoid organs located in the mucosal lining of the pharynx.

Figure 20-1Identify the structures labeled “4.”

Lymph capillaries differ from blood capillaries in all of the following ways except that

You are viewing an organ of the respiratory system and note the following tissues: hyaline cartilage plates arranged in a circle, pseudostratified epithelium, and smooth muscle. Identify the organ.

The largest lymphoid organ is the

In the differentiating cell line that leads to neutrophils, which of the following events occurs?

Which of the following is not a committed cell in a blood cell line?

Functionally, there are no valves in arteries (as opposed to in veins) because

The blood protein that contributes osmotic pressure, keeping water from leaking out of the vessels, is called the