GROSS ANATOMY

Detailed explanation-1: -Alexa is presenting a project in front of her class. She starts sweating and her heart rate increases. This is an example of the autonomic nervous system, sympathetic division.

Detailed explanation-2: -Sometimes the two divisions have opposite effects on the same organ. For example, the sympathetic division increases blood pressure, and the parasympathetic division decreases it. Overall, the two divisions work together to ensure that the body responds appropriately to different situations.

Detailed explanation-3: -The autonomic nervous system (ANS) is the component of the peripheral nervous system that controls cardiac muscle contraction, visceral activities, and glandular functions of the body.

Detailed explanation-4: -The autonomic nervous system manages body processes you don’t think about. Those processes include heartbeat, blood pressure, digestion and more.

Detailed explanation-5: -The sympathetic nervous system (SNS) releases the hormones (catecholamines-epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate.