When a muscle is isometrically contracted, its length _______ change

A.   does
B.   does not


B

Anatomy & Physiology

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Which muscle contracts when one smiles?

A. Frontalis B. Zygomaticus major C. Depressor anguli oris D. Orbicularis oris E. Buccinator

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The pancreatic duct penetrates the duodenal wall with the

A) cystic duct. B) hepatic portal vein. C) common hepatic duct. D) common hepatic artery. E) common bile duct.

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Which of the following is NOT a stimulus for breathing?

A) rising blood pressure B) arterial PO2 below 60 mm Hg C) acidosis resulting from CO2 retention D) rising carbon dioxide levels

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Anatomic dead space greatly affects the efficiency of pulmonary ventilation

a. True b. False Indicate whether the statement is true or false

Anatomy & Physiology