AP PSYCHOLOGY

Detailed explanation-1: -Your sympathetic nervous system is best known for its role in responding to dangerous or stressful situations. In these situations, your sympathetic nervous system activates to speed up your heart rate, deliver more blood to areas of your body that need more oxygen or other responses to help your get out of danger.

Detailed explanation-2: -The body can quickly sense a fall in blood pressure through its arterial and cardiopulmonary baroreceptors, and then activate the sympathetic adrenergic system to stimulate the heart (increase heart rate and contractility) and constrict blood vessels (increase systemic vascular resistance).

Detailed explanation-3: -The sympathetic nervous system (SNS) modulates several functions in skeletal muscle fibers, including metabolism, ionic transport across the membrane, and contractility. These actions, together with the sympathetic control of other organ systems, support intense motor activity.

Detailed explanation-4: -Epinephrine is part of your sympathetic nervous system, which is part of your body’s emergency response system to danger-the “fight-or-flight” response. Medically, the flight-or-flight response is known as the acute stress response. Epinephrine is also called a catecholamine, as are norepinephrine and dopamine.