Final answer:
Prostaglandin H2 synthase-1, also known as cyclooxygenase-1 (COX-1), is an enzyme involved in the synthesis of prostaglandins. COX-1 converts arachidonic acid to prostaglandin H2, which regulates various physiological processes.
Step-by-step explanation:
Prostaglandin H2 synthase-1, also known as cyclooxygenase-1 (COX-1), is an enzyme involved in the synthesis of prostaglandins. Prostaglandins are chemical messengers that play a role in various physiological processes in the body. COX-1 is responsible for the conversion of arachidonic acid to prostaglandin H2, which is further converted to other prostaglandins that regulate blood vessel constriction and dilation, stimulate platelet aggregation, induce labor, and lower blood pressure. Nonsteroidal anti-inflammatory drugs like aspirin inhibit COX-1, reducing the synthesis of prostaglandins.