MUSCLE PHYSIOLOGY

Detailed explanation-1: -In addition, sympathetic nerves innervate atrial and ventricular cardiomyocytes and can thereby influence force of contraction (inotropy) and relaxation (lusitropy).

Detailed explanation-2: -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-3: -Sympathetic nerves are responsible for: increasing heart rate. increasing the force of contraction of the myocardium. the ‘fight or flight’ response, causing our heart to beat faster.

Detailed explanation-4: -The sympathetic nervous system connects the internal organs to the brain by spinal nerves. When stimulated, these nerves prepare the organism for stress by increasing the heart rate, increasing blood flow to the muscles, and decreasing blood flow to the skin.