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The liquid part of the blood is called?
A. Plasma
B. Haemoglobin
C. Serum only
D. Lymph
Correct Answer Is Option = Plasma
Notes / Explanation
The liquid part of the blood is called plasma, which is the fluid in which the cells of the blood are carried and which makes up a large part of the blood. The blood is made up of two main parts: the cells of different kinds, and the liquid in which they float, which is the plasma. The plasma is a pale yellowish liquid, and it makes up a large proportion of the volume of the blood, with the cells being carried along in it. The plasma is mostly water, but it also contains a great many substances dissolved in it, and it carries out a number of important functions. One of the main functions of the plasma is to carry the blood cells and to allow them to flow through the blood vessels, so that the red cells, which carry oxygen, the white cells, which help to defend the body against disease, and the other components can be carried around the body. The plasma also carries a great many dissolved substances to and from the parts of the body, including the nutrients absorbed from food, which are carried to the tissues that need them, and the waste products, which are carried away to be removed from the body, as well as many other substances that the body needs to transport, such as certain substances that carry messages and help to regulate the workings of the body, and substances important for the defence of the body and for the clotting of the blood. In this way the plasma serves as the medium in which the many substances carried by the blood are transported around the body. The plasma is therefore a vital part of the blood, serving both to carry the cells and to transport the many substances that the blood carries. The study of the blood and its components, including the plasma, is an important part of the study of the human body. For PPSC and other competitive examinations, the key points to remember are that the liquid part of the blood is called plasma, that it is a pale yellowish liquid that makes up a large part of the blood and in which the blood cells are carried, that it is mostly water but contains many dissolved substances, and that it carries out important functions, including carrying the blood cells and transporting nutrients, waste products and many other substances around the body.
