Final answer:
Beta blockers affect blood pressure by blocking beta receptors in the body, reducing the effects of adrenaline and decreasing heart rate and blood pressure.
Step-by-step explanation:
Beta blockers are a type of medication that affects blood pressure by blocking the beta receptors in the body. These receptors are responsible for the stimulation of the heart and blood vessels. By blocking these receptors, beta blockers reduce the effects of adrenaline and decrease heart rate and blood pressure.
One of the actions of beta blockers is to slow down the heart rate. This is accomplished by blocking the beta-1 receptors in the heart. When adrenaline binds to these receptors, it increases heart rate. By blocking these receptors, beta blockers can reduce the heart rate, which in turn decreases blood pressure.
Some examples of beta blockers include metoprolol and propranolol. These medications are often used to treat conditions such as hypertension (high blood pressure), angina (chest pain), and arrhythmias (irregular heart rhythms).