While instructing a patient on pain relief, the nurse uses the example of endorphins as endocrine hormones, which act locally at the site of injury. The nurse is explaining what route of hormone transport in the body?
1. paracrine method
2. direct release into the bloodstream
3. neuroendocrine route
4. nerve cell extension into the posterior pituitary
Correct Answer: 1
The paracrine method involves diffusion of hormones through interstitial fluids to act locally. Endorphins produce pain relief in this manner. The paracrine method does not release hormones directly into the blood stream, through the neuroendocrine route, or through cell extension into the posterior pituitary.
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