His first line of defense was broken.
<span>D is the correct answer. It is important for fitness centre staff to be certified so they can provide safe instruction, and friendly and helpful so the customer would like to return.</span>
Answer:
Prostaglandins
Explanation:
Prostaglandins are a class of lipids, that are secreted in the event of an injury, tissue damage or contraction. They're said to occur in almost every human organ. Contraction simply put, is when the inner muscles, the uterine begins to tighten and release at intervals during or before child-birth. So prostaglandins in this case helps to cause these contractions to occurr. it does this by also softening the cervix, making it ready for contraction.
hope this helps?
