Question

White blood cells are also referred to as which of the following? a. platelets b. erythrocytes c. leukocytes d. megakaryocytes

Short answer

Leukocytes

Step-by-step solution

Identify the Terms

Understand the terms presented in the options: platelets, erythrocytes, leukocytes, and megakaryocytes.

Define Each Term Separately

Look up the definitions of each term:- Platelets: Small cell fragments that play a key role in blood clotting.- Erythrocytes: Red blood cells responsible for transporting oxygen in the blood.- Leukocytes: White blood cells involved in the immune response to fight infections.- Megakaryocytes: Large bone marrow cells responsible for producing platelets.

Match White Blood Cells to the Correct Term

Match the definition of white blood cells to the term from the list. White blood cells are known as leukocytes.

Key concepts

platelets

Platelets are tiny cell fragments circulating in our blood. They originate from larger cells known as megakaryocytes, situated in the bone marrow. Unlike full cells, platelets lack a nucleus. When a blood vessel is damaged, platelets rush to the site and form a temporary plug. This is crucial for stopping blood loss.
Beyond just clotting, platelets release chemicals that help in the repair process. Without enough platelets, a person can suffer from excessive bleeding. Platelets work like first-aid responders, arriving quickly to prevent further injury.

erythrocytes

Erythrocytes are more commonly known as red blood cells. These cells have a vital role: carrying oxygen from the lungs to all body tissues. They achieve this through a protein called hemoglobin. Hemoglobin binds to oxygen, allowing erythrocytes to transport it efficiently.
Red blood cells have a unique biconcave shape, which increases their surface area. This shape helps them to squeeze through tiny blood vessels and enhances their ability to exchange gases. A lack of erythrocytes or hemoglobin leads to anemia, a condition characterized by fatigue and weakness.

leukocytes

Leukocytes, or white blood cells, are the frontline defenders in our immune system. There are several types of leukocytes, each with a specialized function. For instance, neutrophils attack bacteria, while lymphocytes are key in identifying and neutralizing viruses.
Leukocytes are larger than red blood cells and have a distinct nucleus. They circulate in the bloodstream and migrate to tissues where pathogens, such as bacteria or viruses, are detected. An elevated number of leukocytes often indicates an infection, while a low count can compromise the immune response.

megakaryocytes

Megakaryocytes are among the largest cells found in the bone marrow. Their primary function is to produce platelets. As these massive cells mature, they extend long processes into the bloodstream. These extensions fragment into thousands of platelets.
Each megakaryocyte can release up to 1,000 platelets, crucial for blood clotting. The production of megakaryocytes and platelets is regulated according to the body's needs. If there is a deficiency, the bone marrow increases production, ensuring an adequate supply to prevent excessive bleeding.