Which of the following is a confirmatory test used to reveal the presence of blood with high accuracy?

Kastle-Meyer test
ABAcard HemaTrace test
Hemoglobin test
Anti-sera test

The answer is Kastle-Meyer test..

A. constrict arterioles and increase blood pressure

Explanation:

Angiotensin II, is a hormone that binds to many receptors in the body to affect several systems. It can cause constricting of the blood vessels, increases thirst, stimulates the secretion of the hormone that is involved in the fluid retention in the body.  

The angiotensin may cause vasoconstriction directly and indirectly. When the angiotension II levels are increased in the blood due to the activation of the renin-angiotension-aldosterone system, many arteries experiences the vasoconstriction so as to maintain the blood pressure. This process reduces the flow of blood to the kidneys.