Question

If a person is suffering from blood loss, blood vessels will _(i)_____ and the heartbeat will be ___(ii)____.

• A. (i) increase,(ii) constrict, (iii)increased
• B. (i) decrease,(ii)constrict, (iii) increased
• C. (i) increase, (ii) dilate, (iii) decreased
• D. (i) decrease,(ii)dilate, (iii) increased

Answer 1

The correct option is A

(i) increase,(ii) constrict, (iii)increased

A person suffering from blood loss experiences a drop in blood pressure. To increase the blood pressure, the cardiac output is to be increased which is acquired by an increase in heartbeat. Since blood pressure is a function of both rate of heartbeat and the resistance of blood on the walls of the vessels. Blood pressure is also increased by vasoconstriction.