An implanted hormonal contraceptive slowly releases progesterone. Which consequence follows for a typical menstrual cycle?

💡 Explanation

A constant supply of progesterone inhibits the release of GnRH from the hypothalamus, thus suppressing LH and FSH secretion because the normal cyclical hormonal variations are disrupted; therefore, ovulation is inhibited, rather than an LH surge being amplified, as this requires fluctuating estrogen levels.

• Which failure mode becomes likely when a patient with cirrhosis consumes excessive acetaminophen?
• A hiker stranded in a desert with limited water experiences increased plasma osmolality. What effect dominates as this osmolality climbs?
• If a researcher introduces a TNF-α inhibitor to counteract inflammation at a localized injury site, which consequence is most likely?
• Why does cancer cell proliferation occur despite checkpoint activation when a growth factor receptor, like EGFR, has a mutation that causes constitutive dimerization?
• A patient takes a non-steroidal anti-inflammatory drug (NSAID) after a minor tissue injury. Which effect dominates regarding inflammation and pain modulation?
• Why does carbohydrate digestion decrease in the small intestine when a patient lacks enterokinase?