Question

In which organ the blood is stored?
a. Spleen
b. Liver
c. Kidney
d. Heart

Answer 1

Hint: The organ in which blood is stored is called a blood bank. This organ may release the RBC into the circulation in order to normalize or raise the percentage of the packed red blood cells. This organ is the part of the lymphatic system and it is the largest lymph node in the human body. We can store blood for 42 days if we do not freeze them.

Complete answer:
• Blood is the red, softest, slightly alkaline having a pH of 7.4. It is a type of specialized connective tissue. It consists of plasma and corpuscles.
• Plasma constitutes 55 percent of blood. It is a fluid matrix made up of water, proteins, and other substances. The plasma protein includes fibrinogen, albumin, and globulin. Plasma also contains blood clotting factors.
• The corpuscles include the Red blood corpuscles (RBC) or erythrocytes, the White blood corpuscles (WBC) or leucocytes, and blood platelets or thrombocytes.
• The spleen is the reservoir for storing RBC hence it is called a blood bank. It is found under the rib cage above the stomach and is the largest organ in the lymphatic system. There are two different types of tissue in the spleen: the red tissue involves the filtering of blood and removal of old blood cells, the white tissue helps the immune system in fighting the infection.
• Spleen releases the RBC into the circulation in order to raise the percentage of red blood cells.

Hence, the correct answer is option (A).

Note: The spleen functions as a blood filter and help fight infection by detecting any microorganisms or pathogens in the blood by forming the white blood cells with the help of lymph nodes, which then works as a defender against those pathogens and these lymphocytes will produce antibodies to kill them.