What outcome results from stimulation of Beta 2 receptors?

Stimulation of Beta 2 receptors primarily leads to bronchodilation, which is the correct outcome for this question. Beta 2 adrenergic receptors are predominantly located in the smooth muscle of the airways in the lungs. When these receptors are activated, they cause the smooth muscle to relax, resulting in a widening of the air passages (bronchi and bronchioles). This effect is particularly beneficial in individuals with conditions such as asthma or chronic obstructive pulmonary disease (COPD), where airflow obstruction needs to be alleviated.

While other receptors and processes in the body may influence functions such as vasodilation and heart contractility, the specific action of Beta 2 receptor stimulation is closely associated with bronchodilation, making it the primary focus in respiratory therapy. Therefore, medications, such as bronchodilators, often target these receptors for effective treatment of respiratory conditions.