ANATOMY

Detailed explanation-1: -After the amygdala sends a distress signal, the hypothalamus activates the sympathetic nervous system by sending signals through the autonomic nerves to the adrenal glands. These glands respond by pumping the hormone epinephrine (also known as adrenaline) into the bloodstream.

Detailed explanation-2: -Hypothalamus: The hypothalamus (hi-po-THAL-uh-mus) is in the lower central part of the brain. It links the endocrine system and nervous system. Nerve cells in the hypothalamus make chemicals that control the release of hormones secreted from the pituitary gland.

Detailed explanation-3: -It releases hormones that regulate your autonomic nervous system. This system controls involuntary functions you usually wouldn’t think about, like your heart rate.

Detailed explanation-4: -The endocrine and nervous systems communicate with each other through the hypothalamus, which controls basic drives such as hunger and thirst. The hypothalamus also regulates the pituitary gland, which governs the release of hormones by the body’s other glands.

Detailed explanation-5: -During times of stress, the hypothalamus, a collection of nuclei that connects the brain and the endocrine system, signals the pituitary gland to produce a hormone, which in turn signals the adrenal glands, located above the kidneys, to increase the production of cortisol.