Other Hormones

Question 1

Source:
Present in neurons of CNS and in neurons throughout body; colocalized in nerve terminals in lymphatic tissues with norepinephrine

Action:
may be responsible for stress-induced regional vasoconstriction (splanchnic, coronary, and cerebral)

Answer 1

Hormone:
Neuropeptide Y (NPY)

Question 2

Source: Pituitary and hypothalamus

Action:
* Activates endorphin (opiate) receptors on peripheral sensory nerves, leading to pain relief or analgesia

• Hemorrhage increases levels to inhibit blood pressure or delay compensatory changes that would increase blood pressure

Answer 2

Hormone:
β-Endorphins (endogenous opiates)