The Frank-Starling mechanism of the heart describes:
a. the relationship between end-systolic volume and stroke volume
b. the relationship between length and tension in cardiac muscle cells
c. the relationship between sympathetic stimulation and stroke volume
d. the relationship between arterial blood pressure and stroke volume
Answer: b. the relationship between length and tension in cardiac muscle cells
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Injections of gamma globulin are sometimes given to provide
A. naturally acquired active immunity. B. artificially acquired passive immunity. C. artificially acquired active immunity. D. naturally acquired passive immunity.
Name the layer labeled A
a) Submucosa b) Serosa c) Longitudinal muscle d) Mucosa e) Circular muscle
The major chemical digestive activity occurring in the stomach is
a. digestion of starch. b. digestion of protein. c. digestion of fat. d. absorption of monosaccharides. e. digestion of vitamins.
In these views of the trachea, what structure does number 1 indicate?
A. Carina B. Anular ligament C. Goblet cell D. Pseudostratified ciliated columnar epithelium E. Trachealis muscle