Sympathetic innervation of the heart
a: increases the heart rate
b: decreases the heart rate
c: increases the force of contractions
d: decreases the force of contractions
e: has no effect on contraction force
A. a, c
B. b, d
C. a, d
D. b, e
E. a, e
A
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What results from right ventricular failure?
A. Pulmonary congestion B. Compression of the heart by serous fluid or blood in the pericardial cavity C. Mitral valve prolapse D. Systemic congestion E. Inflammation of the endocardium
The vertical osmotic gradient in the kidney
a. is established and maintained by the countercurrent system. b. makes it possible to put out urine of variable concentration depending on the needs of the body by varying the degree of water permeability of the distal portions of the nephron. c. is found in the renal cortex. d. both (a) and (b) above. e. all of these answers.
To go through glycolysis, ________ ATP per glucose molecule must be "invested" in order to activate the glucose molecule.
A. one B. two C. three D. four
The atomic number represents the number of:
A) protons in an atom. B) neutrons in an atom. C) protons and neutrons in the nucleus of an atom. D) electrons in an atom.