The hormone hCG (human chorionic gonadotropin) is produced by the
A. syncytiotrophoblast.
B. corpus luteum.
C. cytotrophoblast.
D. endometrium.
E. chorion.
Answer: A
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Opioid drugs, such as morphine, are agonists of the receptors for a class of neurotransmitters called endorphins.
Answer the following statement true (T) or false (F)
Which knee ligament is most crucial for preventing hyperadduction?
A. Tibial collateral ligament B. Fibular collateral ligament C. Patellar ligament D. Anterior cruciate ligament E. Medial meniscus
Which of the following is not a function of the carbonic acid/bicarbonate system?
A. Regulating pH changes of the blood during exercise. B. Regulation of the pH of the intracellular environment. C. Regulation of blood pH during elevated fat metabolism. D. Regulation of blood pH in coordination with the respiratory system. E. Regulation of blood pH in coordination with the kidneys.
Which ion is primarily reabsorbed when hydrogen ions are secreted?
A. Potassium B. Sodium C. Chloride D. Calcium