Anatomy Leukocytes Quiz Questions And Answers

Platelets, also known as thrombocytes, are small blood cell fragments that play a crucial role in blood clotting. When there is an injury or damage to a blood vessel, platelets are activated and aggregate at the site to form a plug, preventing excessive bleeding. They release chemicals that attract more platelets and help in the formation of a fibrin mesh, which reinforces the plug and forms a stable blood clot. Without platelets, the process of blood clotting would be impaired, leading to prolonged bleeding and increased risk of hemorrhage.

Eosinophils are a type of white blood cell that increase in response to parasitic worm infections in humans. These cells are involved in the immune response against parasites and are responsible for releasing toxic substances to kill the parasites. By increasing in number, eosinophils help to combat the infection and protect the body from further harm.

Erythrocytes, also known as red blood cells, lack a nucleus. This absence of a nucleus allows them to have more space to carry oxygen and carbon dioxide. The lack of a nucleus also gives erythrocytes their unique biconcave shape, which allows for increased flexibility and surface area for gas exchange. Additionally, the absence of a nucleus means that erythrocytes do not have the ability to divide or repair themselves, which is why they have a limited lifespan of about 120 days.

A monocyte is a type of white blood cell that plays a crucial role in the immune system. They are the largest of all white blood cells and are responsible for engulfing and destroying pathogens, dead cells, and other foreign substances in the body. Monocytes are formed in the bone marrow and then circulate in the bloodstream, where they can migrate to tissues and differentiate into macrophages or dendritic cells. These cells are essential for the body's defense against infections and are involved in the inflammatory response.

Monocytes are a type of white blood cell that have a kidney-shaped nucleus and gray-blue cytoplasm. They are the largest of all white blood cells and play a crucial role in the immune response by engulfing and destroying bacteria, viruses, and other pathogens. Monocytes also help in tissue repair and can differentiate into macrophages, which are responsible for removing dead cells and debris from the body.

Basophils are a type of white blood cell that contain histamine. Histamine is a chemical released by basophils and other cells in response to an immune reaction or an allergic response. It plays a role in inflammation and allergic reactions by causing blood vessels to dilate and become more permeable. This allows other immune cells to reach the site of infection or injury more easily. Basophils are also involved in other immune responses, such as releasing other chemicals that attract other immune cells to the site of infection.

The correct answer is Basophil. Basophils are a type of white blood cell that play a role in the immune response by releasing chemicals such as histamine and heparin. They are involved in allergic reactions and defense against parasites. Basophils have large granules in their cytoplasm that stain darkly with basic dyes, which distinguishes them from other white blood cells.

A lymphocyte is a type of white blood cell that plays a crucial role in the immune system. They are responsible for producing antibodies and coordinating immune responses against foreign substances in the body. Lymphocytes are characterized by their large nucleus and a small amount of cytoplasm. They are involved in both the innate and adaptive immune responses, providing long-term immunity against pathogens.

Erythrocytes, also known as red blood cells, are the most numerous formed element found in human blood. They are responsible for carrying oxygen to the body's tissues and removing carbon dioxide. Erythrocytes are specialized cells that lack a nucleus and other organelles, allowing them to have a biconcave shape and maximize their surface area for the efficient exchange of gases. Their high number in the blood is essential for maintaining proper oxygenation and overall functioning of the body.

T lymphocytes, also known as T cells, are a type of white blood cell that plays a crucial role in the immune response against viruses. When a patient is fighting a viral infection, the number of T lymphocytes increases as they are activated to recognize and destroy virus-infected cells. T lymphocytes are responsible for coordinating and regulating the immune response, producing cytokines, and directly killing virus-infected cells. Therefore, an increase in T lymphocytes is a characteristic response to a viral infection.