Which of the following is both an anion and a compound?
A) Na+
B) Cl-
C) K+
D) HCO3-
E) NaCl
Answer: D
Anatomy & Physiology
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Decreases in blood pressure turn _____ the thirst center of the brain
A. on B. off
Anatomy & Physiology
Ionic compounds dissociate in water into:
A) electrolytes. B) acids and bases. C) polar and nonpolar substances. D) hydrophilic and hydrophobic substances.
Anatomy & Physiology
Which muscle(s) of respiration is(are) innervated by the phrenic nerve?
A. Diaphragm B. External intercostals C. Internal intercostals D. Innermost intercostals E. Pectoralis major
Anatomy & Physiology
The heart, blood, and blood vessels combine to form which of the following?
A) a group of cells B) an organ system C) the smallest level of organization D) an organ E) an individual living entity
Anatomy & Physiology