Which of the following is a hormone?

Prepare for the Washington State Veterinary Medication Clerk Test. Study with detailed questions and answers, with practical hints and explanations to guide you. Ace your exam by practicing with our resources!

Multiple Choice

Which of the following is a hormone?

Explanation:
Hormones are chemical messengers produced by glands that travel through the bloodstream to regulate activities in distant tissues. Levothyroxine is a synthetic form of thyroxine (T4), the thyroid gland’s hormone, used as hormone replacement to treat hypothyroidism. When given as a medication, it functions as a hormone to restore normal metabolic rate and energy balance, which is why it’s the correct choice. The other drugs are not hormones. Dibenzyline (phenoxybenzamine) is an adrenergic blocker that affects receptors rather than acting as a circulating hormone. Neopolybac is an antibiotic preparation, used to treat infections. Prilosec (omeprazole) is a proton pump inhibitor that reduces stomach acid.

Hormones are chemical messengers produced by glands that travel through the bloodstream to regulate activities in distant tissues. Levothyroxine is a synthetic form of thyroxine (T4), the thyroid gland’s hormone, used as hormone replacement to treat hypothyroidism. When given as a medication, it functions as a hormone to restore normal metabolic rate and energy balance, which is why it’s the correct choice.

The other drugs are not hormones. Dibenzyline (phenoxybenzamine) is an adrenergic blocker that affects receptors rather than acting as a circulating hormone. Neopolybac is an antibiotic preparation, used to treat infections. Prilosec (omeprazole) is a proton pump inhibitor that reduces stomach acid.

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