Question

- Distinguish between the following pairs :
(a) Systole and Diastole
(b) Arteriole and Venule
(c) Universal donor and Universal recipient
(d) Arteries and Veins
ol lonloin.​

Answer 1

Answer:

1. a)Diastole and systole are two phases of the cardiac cycle. They occur as the heart beats, pumping blood through a system of blood vessels that carry blood to every part of the body. Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction.
2. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. Capillaries lead back to small vessels known as venules that flow into the larger veins and eventually back to the heart. ... The venous system is a lower-pressure system, containing veins that have larger lumens and thinner walls.
3. In transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors. Those with type AB Rh D positive blood are called universal recipients. ... The antibodies will attack the antigens on any other blood type.
4. Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. Capillaries lead back to small vessels known as venules that flow into the larger veins and eventually back to the heart