GROSS ANATOMY

Detailed explanation-1: -Answer and Explanation: Most vital organs receive dual innervation, which means that they receive instruction from both sympathetic and parasympathetic divisions. Organs that receive innervation from both the sympathetic and parasympathetic nervous systems are said to be ‘dually innervated".

Detailed explanation-2: -For example, the heart receives connections from both the sympathetic and parasympathetic divisions. One causes heart rate to increase, whereas the other causes heart rate to decrease.

Detailed explanation-3: -What is Dual Innervation? Dual innervation is the instruction that an organ receives from both sympathetic and parasympathetic systems. Most of the organs in our body are innervated by both divisions of the autonomic nervous system (ANS).

Detailed explanation-4: -The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal. It contains three anatomically distinct divisions: sympathetic, parasympathetic, and enteric.

Detailed explanation-5: -The heart, glands and smooth muscles are innervated by both sympathetic and parasympathetic fibers (dual innervation). Moreover, they are usually activated reciprocally, i.e. when the activity of one division increases, the activity of the other decreases.