Norepinephrine is a catecholamine
Indicate whether this statement is true or false.
TRUE
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In mammalian lungs gas exchange occurs
a. in the bronchioles. b. Across the surface of the type II cells. c. in the alveoli. d. the pores of Kohn. e. two of these.
Bile secretion is
A. performed continuously by the liver. B. is stimulated by sympathetic nerves. C. is stimulated by decreased amounts of bile salts. D. stimulated by increased vitamin B12 storage. E. controlled by the gallbladder.
Which of the following statements is true?
A. The first cervical vertebra is called the axis. B. The spinal cord protects the vertebral column. C. Thoracic vertebrae have long, thin spinous processes. D. The sacral vertebrae are superior to the lumbar vertebrae. E. Lumbar vertebrae are generally smaller than thoracic vertebrae.
The ________ covers the outer surface of the heart
A) epicardium B) myocardium C) endocardium D) parietal pericardium E) mediastinum