When trying to stop arterial bleeding by applying pressure,why is it necessary to apply pressure between the bleeding part and the heart?
A) Because blood flows from the heart through the arteries to the injured part, pressure placed between the heart and the bleeding point cuts off the source of blood flow to that point.
B) Because blood pressure is greater in the arteries coming from the heart, pressure placed between the heart and bleeding point reduces pressure, thus cutting off the source of blood flow to that point.
C) Because venous blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of venous blood flow to that point.
D) Because arterial blood pressure changes by alternate contraction and relaxation of the atria, pressure placed between the heart and bleeding point cuts off the source of arterial blood flow to that point.

Question

Quizplus · Accepted Answer

Arteries carry oxygenated blood from the heart to the various parts of the body. When there is arterial bleeding, applying pressure between the bleeding part and the heart can cut off the source of blood flow to that point by blocking the flow of blood from the heart to the injured area. This helps to slow down or stop the bleeding, thereby reducing the risk of further blood loss and increasing the chances of survival. Venous blood pressure and the contraction and relaxation of the atria are not relevant in this context. Option B is also incorrect as blocking arterial flow would increase blood pressure, not reduce it.

When Trying to Stop Arterial Bleeding by Applying Pressure,why Is