The second messenger in a second messenger system is a(n):
A. G-protein
B. ? chain of the G-protein
C. Enzyme inside the neuron that can trigger responses within the neuron
D. Neurotransmitter
E. Gene
ANS: C
Rationale: The G-protein–mediated second-messenger system involves: (1) binding of a neurotransmitter (first messenger) to a G-protein–associated membrane receptor; (2) activation of an effector enzyme (second messenger); (3) increased levels of the second messenger that elicits responses within the neuron.
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What is the correct breakdown and translation for the underlined terms in the following Emergency Department Note excerpt?Emergency Department CourseMs. Miller arrived at the emergency department in mild discomfort. An IV was started, and she was treated with IV fluids for mild dehydration. Ms. Miller was also given an antiemetic and ibuprofen. A rapid hCG test to rule out ectopic pregnancy was negative. A swab of Ms. Miller's purulent vaginal discharge revealed leukorrhea. We performed a transvaginal sonography. Suspicion for pelvic inflammatory disorder was confirmed by findings of enlarged ovaries consistent with oophoritis, endometritis, and hydrosalpinx. Results for chlamydia reinfection and gonorrhea are still pending.
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An electrolyte:
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