A patient with asthma experiences bronchospasms. If a beta-2 adrenergic agonist inhaler is administered, which consequence follows regarding the airway smooth muscle?

💡 Explanation

Beta-2 adrenergic agonists promote bronchodilation via smooth muscle relaxation. This occurs because the agonist binds to beta-2 receptors, stimulating cAMP production; therefore, smooth muscle relaxes. Rather than promoting degranulation or enhancing leukotriene sensitivity, agonists counteract those effects.

• An implanted hormonal contraceptive slowly releases progesterone. Which consequence follows for a typical menstrual cycle?
• Why does excessive mechanical loading during intense weightlifting eventually lead to stress fractures in bone undergoing remodeling?
• If neuronal autophagy declines in a patient with developing Alzheimer's disease, which consequence follows regarding neurodegenerative pathology?
• A woman with endometriosis experiences increased pain during menstruation. Which mechanism explains why this phenomenon occurs in the reproductive system?
• Why does uncontrolled growth result from mutations affecting growth factor receptor tyrosine kinases in cancer cells?
• During mechanical ventilation, why does an increased dead space ventilation ratio (VD/VT) most significantly impair oxygen uptake?