The number of secondary left bronchi is

A. 1.
B. 2.
C. 3.
D. 4.


Answer: B

Anatomy & Physiology

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This figure shows a superior view of a vertebra. Which number indicates the spinous process?

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Which statement is incorrect?

A. Endocrine glands lack ducts. B. The effect of hormones is shorter than the effect of nerve impulses. C. Steroid hormones are carried in the blood by transport proteins. D. Hormones may have widespread, distant effects on the body. E. A common second-messenger is cyclic AMP.

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Indicate whether the statement is true or false.

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Hormonal actions on cells affect all of the following except

A) quantities of enzymes. B) activities of enzymes. C) synthesis of enzymes. D) gating of ion channels. E) thickness of the plasma membrane.

Anatomy & Physiology