Adrenal medulla
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The adrenal medulla is the inner part of the adrenal gland. It is located at the center of the gland, being surrounded by the adrenal cortex. It is the innermost part of the adrenal gland, consisting
Adrenal medulla (on the pointer) stains lighter than the adrenal cortex, H&E stain
Fight-or-flight response
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The fight-or-flight or the fight-flight-or-freeze response, also known as hyperarousal or acute stress response, is a physiological reaction that occurs in response to a perceived harmful event, attac
Adrenal medulla
…skin and gastrointestinal tract, smooth muscle (bronchiole and capillary) dilation, and increased metabolism, all of which are characteristic of the fight-or-flight response. Release of catecholamines is stimulated by nerve impulses, and receptors for catecholamines are widely distributed throughout the body. Neoplasms…
Bison hunted by dogs
Cat and dog standoff
Dog and cat showing fight or flight responses