In this experiment, when the muscle is stretched what happens to the length of the muscle fibers?
What will be an ideal response?
the muscle fibers get longer
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Sympathetic and parasympathetic activity at the salivary glands is antagonistic
Indicate whether the statement is true or false
An intestinal hormone that stimulates mucus secretion by the submucosal duodenal glands and dilation of intestinal capillaries is
A) secretin. B) cholecystokinin. C) vasoactive intestinal peptide (VIP). D) gastric inhibitory peptide (GIP). E) gastrin.
Which of the following lists best illustrates the idea of increasing levels of complexity?
A. Organelles, cells, tissues, organs, organ systems B. Cells, tissues, organelles, organs, organ systems C. Organs, organelles, organ systems, cells, tissues D. Tissues, cells, organs, organelles, organ systems
In an isotonic, concentric contraction,
a. circular muscles (like those in the iris of the eye) contract, making a smaller aperture. b. muscle length shortens while tension remains constant. c. muscle lengths shorten, drawing objects closer to the body midline. d. None of these.