Receptor potentials
a. are always depolarizations
b. are graded potentials
c. have refractory periods
d. are always action potentials
e. are not any of the above
B
Anatomy & Physiology
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Which substance is not reabsorbed by the proximal convoluted tubule?
A. Glucose B. Sodium C. Water D. Potassium E. Creatinine
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A pigment synthesized from vitamin A is
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Which of the following is produced in the ovary and then leaves the ovary?
A. testosterone B. corpus luteum C. secondary oocyte D. FSH E. menstrual blood
Anatomy & Physiology