When arterial blood pressure rises above the normal range, r…

When arterial blood pressure rises above the normal range, receptors in the carotid sinuses and aortic arch are stimulated which send impulses to the vasomotor center in the medulla oblongata of the brain. In response, the vasomotor center sends out fewer impulses to the blood vessel, causing vasodilation of the blood vessels that result in a decrease in blood pressure. The control center for blood pressure homeostasis is/are:

Santiago, a 12 year old boy, was awakened suddenly by a loud…

Santiago, a 12 year old boy, was awakened suddenly by a loud crash. As he sat up in bed, straining to listen, his fright was revealed by his rapid breathing (hyperventilation), a breathing pattern effective in ridding the blood of CO2. True or False: Santiago’s blood pH was becoming more acidic and triggered hyperventilation.

During labor, the ripening of the cervix is due to the press…

During labor, the ripening of the cervix is due to the pressure of the descending fetus and hormonal changes in the body. Oxytocin, a hormone that stimulates contractions, amplifies and increases the frequency of the contractions until the cervix is fully ripened and the fetus is expelled.  This is an example of a [BLANK-1] feedback mechanism.