The primary function of atrial natriuretic peptide (ANP) is to
A) decrease potassium secretion thereby increasing potassium reabsorption.
B) decrease sodium secretion thereby increasing sodium reabsorption.
C) increase sodium secretion thereby decreasing sodium reabsorption.
D) increase the stretching capacity of the atria.
E) increase potassium secretion thereby decreasing potassium reabsorption.
Answer: C) increase sodium secretion thereby decreasing sodium reabsorption.
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Which of the following is the mildest consequence of traumatic brain injury?
A) swelling B) concussion C) contusion D) hemorrhage
The low-resistance pathway that permits electrical activity pass from cell-to-cell in myocardial tissue is the
a. desmosome. b. septum. c. gap junction. d. T-tubule. e. sarcoplasmic reticulum.
Myelinated axons in the CNS are known as:
A) dark matter. B) white matter. C) internodes. D) gray matter.
Select the correct statement.
A. DNA is double-stranded but RNA is single-stranded, although their nucleotides are identical. B. DNA and RNA are double-stranded molecules composed of nucleotides. C. DNA and RNA are single-stranded molecules with dissimilar nucleotides. D. DNA contains the genetic code, and RNA carries the coded information to the sites of protein synthesis.