all nucleated cells and platelets
All nucleated cells and platelets are components of the blood
All nucleated cells and platelets are components of the blood. Nucleated cells include red blood cells (also called erythrocytes), white blood cells (leukocytes), and platelets (also known as thrombocytes).
Red blood cells are responsible for transporting oxygen from the lungs to other tissues in the body, and they also help remove carbon dioxide, a waste product of cellular respiration. Red blood cells do not have a nucleus, which allows them to have a flexible, biconcave shape that enables them to squeeze through narrow blood vessels.
White blood cells, on the other hand, do have a nucleus and play a crucial role in the immune system. They defend the body against pathogens, such as bacteria and viruses, by various mechanisms such as phagocytosis (engulfing and destroying foreign particles) or producing antibodies for targeted immune responses.
Platelets are small, irregularly shaped cell fragments that do not have a nucleus. They play a vital role in blood clot formation, also known as hemostasis. When a blood vessel is damaged, platelets aggregate at the site to form a clot, preventing excessive bleeding. Platelets release substances that promote clotting and also help in the repair and healing of damaged blood vessels.
In summary, while all nucleated cells and platelets are part of the blood, they have different functions within the body. Red blood cells transport oxygen, white blood cells protect against pathogens, and platelets are involved in blood clotting and wound healing.
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