sympathoadrenal

sympathoadrenal /sym·patho·ad·re·nal/ (sim″pah-tho-ah-dre´n'l)

1. pertaining to the sympathetic nervous system and the adrenal medulla.

2. involving the sympathetic nervous system and the adrenal glands, especially increased sympathetic activity that causes increased secretion of epinephrine and norepinephrine.

---

sympathoadrenal

1. pertaining to the sympathetic nervous system and the adrenal medulla.

2. involving the sympathetic nervous system and the adrenal glands, especially increased sympathetic activity that causes increased secretion of epinephrine by the adrenal medulla and norepinephrine by the postganglionic sympathetic nerve endings.

---

sympathoadrenal discharge

the sympathoadrenal system can discharge as one unit and prepare the animal in all systems for immediate fight or flight. There is an increase in heart rate, ventricular contractile strength, cardiac output, blood pressure plus pupillary dilatation, increased respiratory rate, bronchiolar dilatation, diversion of blood flow from the splanchnic to skeletal muscle circulation and elevation of the blood sugar.