Final answer:
Low potency antagonists targeting the alpha-1 adrenergic receptor can lead to vasodilation and a decrease in blood pressure. Anticholinergic drugs can similarly affect blood pressure by reducing gastrointestinal motility.
Step-by-step explanation:
The question appears to be referencing mechanisms of action for certain pharmaceutical drugs. Low potency antagonists that target adrenergic receptors can cause decreased blood pressure. Specifically, these antagonists bind to the alpha-1 adrenergic receptor, which plays a role in smooth muscle contraction in various bodily systems including vasoconstriction in blood vessels. When these receptors are blocked by an antagonist, it can lead to vasodilation, which may decrease blood pressure. Additionally, some medications, known as anticholinergic drugs, reduce the function of the parasympathetic system and can also decrease gastrointestinal motility.