
23-Year-Old Female with Menstrual Irregularity
Jasmine Herrera, 23, has been referred to the endocrinology clinic. She is very overweight, with obvious acne and facial hair. She complains of irregular menstrual cycles. “My husband and I want to use the rhythm method," she says, “but I don’t have any rhythm!”
2. NCLEX-STYLE Jasmine’s doctor has ordered measurement of her androgen levels. Which of the following statements is most accurate about this test?
a. It should come back negative, because women do not produce any androgens.
b. It depends on the phase of her cycle; androgens are only synthesized during the luteal phase of the ovarian cycle.
c. It depends on her muscle mass; androgens are anabolic steroids and cause muscle growth, so more muscle means more androgens.
d. Levels should be low but not absent, because the ovaries produce androgens but convert most of them into estrogens.

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Chapter 27 Solutions
EBK HUMAN ANAT.+PHYSIOLOGY
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- Choose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forwardThe following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forward
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