The kidneys maintain proper __________ volume, which is important in the long-term regulation of arterial __________
Fill in the blank(s) with correct word
plasma; blood pressure
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The aortic valve
a. prevents the backflow of blood into the aorta during ventricular diastole b. prevents the backflow of blood into the left ventricle during ventricular diastole c. prevents the backflow of blood into the right ventricle during ventricular diastole d. closes when the first heart sound is heard e. does not do any of the above
All postganglionic parasympathetic fibers release ________ at their effector.
Fill in the blank(s) with the appropriate word(s).
Where are the neurons for the autonomic nervous system located?
A. Corpus callosum B. Spinal cord and brain stem C. Cerebral cortex D. Inside neurotransmitters
MgCl2 fully dissociates into Mg2+ and Cl- ions when mixed with water. Therefore, the bonds between Mg2+ and Cl- in MgCl2 can be described as
A. nonpolar covalent. B. ionic. C. hydrogen bonds. D. polar covalent.