A muscle cramp is most likely due to a temporary lack of:

A. actin
B. myosin
C. ATP
D. ADP
E. motor neurons


Answer: C. ATP

Anatomy & Physiology

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The lung volume that represents the total volume of exchangeable air is the ________

A) tidal volume B) expiratory reserve volume C) inspiratory capacity D) vital capacity

Anatomy & Physiology

The intrapulmonary pressure

a. is the pressure within the air sacs of the lung. b. always equilibrates with atmospheric pressure. c. is always less than intrapleural pressure. d. both (a) and (b) above. e. all of these answers.

Anatomy & Physiology

Where is the hilum of the lung found?

A. On its cupola B. On its cardiac notch C. On its mediastinal surface D. On its costal surface E. On its base

Anatomy & Physiology

The segment of the DNA molecule where messenger RNA synthesis begins is called the

promoter region. sigma factor. transcription terminator. polymerase. template.

Anatomy & Physiology