MUSCLE PHYSIOLOGY

Detailed explanation-1: -Stimulation of beta-2 receptors in the lungs causes bronchodilation, the desired clinical effect. Albuterol has been used in humans to inhibit uterine contractions during premature labor. Stim-ulation of beta-2 receptors on skeletal muscle cells causes increased contractility and may lead to muscle tremors.

Detailed explanation-2: -Blood Vessels Beta2 receptors are located on the vasculature and will lead to vascular smooth muscle relaxation and vasodilation.

Detailed explanation-3: -2 adrenergic agonists’ effects on smooth muscle cause dilation of bronchial passages, vasodilation in muscle and liver, relaxation of uterine muscle, and release of insulin. They are primarily used to treat asthma and other pulmonary disorders, such as Chronic obstructive pulmonary disease (COPD).

Detailed explanation-4: -beta-Adrenergic receptors contribute to hypoxaemia induced vasodilation in man.