Question:
The life span of human WBC is approximately
The life span of human WBC is approximately
Updated On: Jun 26, 2024
- between 2 to 3 months
- more than 4 months
- less than 10 days
- between 20 to 30 days.
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The Correct Option is C
Solution and Explanation
WBCs (also called leucocytes) are rounded or irregular colourless cells with a nucleus. They can change their shape and are capable of amoeboid movement. Leucocytes, formed in lymph nodes and red bone marrow, can produce antibodies and move through the walls of vessels to migrate to the sites of injuries, where they surround and isolate dead tissue, foreign bodies and bacteria. They survive for a few days generally 3-4 days after which they die and get phagocytized in blood, liver and lymph nodes.
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Concepts Used:
Blood
Blood is a fluid-like structure that is responsible for transporting oxygen and other nutrients to all the cells of the body. Blood shows characteristics of both tissues and fluid.
Composition of Blood:
Blood is composed of the below-mentioned parts:
- Plasma
- Blood Cells
- Platelets
Types of Blood Cells:
The two types of blood cells present in the body are:
RBC (Red Blood Cells)
RBC’s are also known as Erythrocytes. They are biconcave and are present without a nucleus in human beings. It contain Haemoglobin which is an iron-rich protein due to which the color of blood is red. RBC’s are produced in the bone marrow which is mainly responsible for the transportation of oxygen to and from various tissues and organs present in the human body.
WBC (White Blood Cells)
WBC’s are also known as Leucocytes which are colourless blood cells due to the absence of haemoglobin. They are further divided into two categories such as granulocytes and agranulocytes. Their main responsibility is to provide immunity and maintain defence mechanisms in the human body.