The most normal percentage of plasma in blood would be:
55%,
45%,
65%,
40%
The correct answer and explanation is:
The correct answer is 55%.
Plasma is the liquid portion of the blood and makes up about 55% of total blood volume. It is a pale yellow fluid composed mostly of water, but it also contains proteins, electrolytes, gases, hormones, and waste products. Plasma plays an essential role in transporting nutrients, waste products, and hormones throughout the body. It also helps maintain blood pressure and regulates body temperature.
The remaining 45% of blood volume is made up of formed elements, which include red blood cells, white blood cells, and platelets. The primary role of red blood cells is to carry oxygen from the lungs to the tissues and return carbon dioxide to the lungs for exhalation. White blood cells are involved in immune defense, and platelets help with blood clotting.
Plasma is rich in proteins, including albumin, globulins, and fibrinogen, which serve various functions like maintaining osmotic pressure (albumin), transporting substances such as lipids and hormones (globulins), and assisting in blood clotting (fibrinogen). In addition to these proteins, plasma contains nutrients like glucose, amino acids, and fatty acids, as well as waste products like urea and creatinine that are filtered by the kidneys.
In terms of blood composition, plasma is essential for the transportation of these critical substances and helps ensure the smooth functioning of various bodily systems. Its composition and proportion in the blood are crucial for maintaining homeostasis and supporting various physiological processes.