This increase in urine volume causes a decrease in blood volume. The hypothalamic-pituitary portal system is composed of a. arteries that stretch from the hypothalamus to the pituitary b. a capillary bed in hypothalamus that is connected to a second capillary bed in the pituitary by arterioles c. Venous return to the heart is aided by the a. parasympathetic nerve activity. Atrial natriuretic factor does which of the following a. causes the kidney to reabsorb more H 2 O thus increasing blood volume and increasing blood pressure b. When blood pressure increases, a number of events occur that returns blood pressure to normal.
Blood flow is proportional to the fourth power of the radius of the blood vessel.
Calcium does which of the following in smooth muscle cells a. binds to troponin b. Release of acetylcholine on the sinoatrial node will slow the heartrate. A child is born with an undetected hypothalamic tumor that causes abnormally elevated secretion of TRH, melanocyte-releasing hormone and somatostatin. Describe this individual s physical condition at the age of 10 if the tumor remains undetected. You have been injected with a hormone that will cause death if you are not given the proper antidote.