Author Question: If a wound overwhelms the clotting mechanism and leads to serious hemorrhage and drop in blood ... (Read 35 times)

tuffie · **on:** Feb 27, 2019

If a wound overwhelms the clotting mechanism and leads to serious hemorrhage and drop in blood pressure, what compensations does the body have to maintain cardiac output?

Question 2

The hormone that increases the flexibility of the pubic symphysis during pregnancy is
A) luteinizing hormone.
B) progesterone.
C) human chorionic gonadotropin.
D) human placental lactogen.
E) relaxin.

amynguyen1221 · **Reply #1 on:** Feb 27, 2019

Answer to Question 1

Acutely, the autonomic nervous system undergoes sympathetic activation. Epinephrine from the adrenal medulla supports the neural mechanisms. Heart rate and contractility are increased in trying to maintain cardiac output. Vasoconstriction increases peripheral resistance, raising blood pressure and redirecting flow to vital internal organs. Simultaneously, venoconstriction occurs, increasing venous return and forcing extra blood from the venous to the arterial side of the circulation. The endocrine system releases ADH, angiotensin II, and aldosterone, which act together to raise blood volume by reducing fluid loss at the kidney.

Answer to Question 2

E