Question

i)What happens to the blood flow when aorta contracted?
ii) What is the normal blood pressure in arteries?
ii)Which liquid metal present in Sphygmomanometer?
iv)Which blood vessel has less blood pressure?
VGive reason for iv question.​

Answer 1

Answer:

i)Left side of the heart

When the ventricle is full, the mitral valve shuts. This prevents blood from flowing backward into the atrium while the ventricle contracts. As the ventricle contracts, blood leaves the heart through the aortic valve, into the aorta and to the body.

ii)Doctors usually consider anything between 70 and 100 mmHg to be normal. A MAP in this range indicates that there's enough consistent pressure in your arteries to deliver blood throughout your body.

iii)Mercury Mercury metal

Uses of Mercury

Mercury metal has many applications. Because of its high-density mercury used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices.

iv)Veins and venules have much thinner, less muscular walls than arteries and arterioles, largely because the pressure in veins and venules is much lower. Veins may dilate to accommodate increased blood volume.

Explanation:

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