Which of the following is an example of negative feedback? During birthing contractions, the hormone oxytocin is released and ac
ts to stimulate further contractions. When a baby is nursing, suckling leads to the production of more milk and a subsequent increase in the secretion of prolactin, which in turn stimulates lactation. After a blood vessel is damaged, signals are released by the damaged tissues that activate platelets in the blood; these activated platelets release chemicals that activate more platelets. When blood glucose concentration increases, the pancreas produces and releases the hormone insulin, which decreases blood glucose. As blood glucose decreases, the rate of production and release of insulin decreases
Platelets are key players in hemostasis, the process by which the body seals a ruptured ... Failure of any of these steps will result in hemorrhage—excessive bleeding. ... with the exposed underlying connective tissue and collagenous fibers. ... (b) The synthesis of fibrin in blood clots involves either an intrinsic pathway or an ...
