Foreign particles are more likely to get lodged in the right primary bronchus.

Unlike most body systems, the immune system

Which of the following statements about fever is correct?

The formation of lymph occurs as a result of

As the cross-sectional area of blood vessels increases, velocity of blood flow increases.

Initial activation of B-lymphocytes occurs when their ____________ binds to a(an) _____________.

Complement factors are named in the order in which they function.

Activated helper T-lymphocytes release

When Mendel crossed purple-flowered pea plants with white-flowered pea plants, he never got offspring with flowers that had an intermediate color. This was counter to the theory of

The shape of the beaks of Darwin’s finches and industrial melanism are often cited as examples of the process of_________ leading to evolutionary change.