The airway that supplies one lobe of a lung is called a:

a. primary bronchus
b. secondary bronchus
c. tertiary bronchus
d. bronchiole


Answer: b. secondary bronchus

Anatomy & Physiology

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An increase in plasma PO4 concentration forces a reduction in plasma Ca2+ as a result of the inverse relationship between plasma PO4 and Ca2+ levels

Indicate whether the statement is true or false

Anatomy & Physiology

Branched muscle fibers and intercalated discs are characteristic of ________ muscle tissue.

A. smooth B. multinucleated C. skeletal D. cardiac E. voluntary

Anatomy & Physiology

What is the most likely reason humans have only two nipples?

A. Our primate ancestors probably had litters. B. The number of nipples was reduced in humans due to sexual selection. C. Primates generally have only one offspring. D. Most mammals have only two nipples. E. Having two nipples is associated with upright walking (bipedality).

Anatomy & Physiology

Engorgement of the erectile tissues of the clitoris and increased secretion of the greater vestibular glands involve neural activity that includes what?

a. somatic motor neurons b. parasympathetic activation c. sympathetic activation d. all of the above

Anatomy & Physiology