Lymph circulation is a vital physiological process that ensures the movement of lymph—a clear fluid containing white blood cells, proteins, lipids, and waste products—through the lymphatic system and eventually back into the bloodstream. This circulation plays a crucial role in fluid balance, immune function, and nutrient transport. Unlike the cardiovascular system, which is a closed-loop … Read more
Lymphatic vessels are a critical part of the lymphatic system, responsible for transporting lymph (a fluid containing white blood cells, proteins, and waste products) from tissues back into the bloodstream. These vessels form an extensive network throughout the body, functioning similarly to veins but with distinct structural and physiological differences. The primary roles of lymphatic … Read more
The lymphatic system is a crucial component of the circulatory and immune systems, playing a vital role in maintaining fluid balance, immune defense, and the absorption of dietary fats. It is a vast network of lymphatic vessels, lymph nodes, lymphoid organs, and lymphatic fluid (lymph) that works in close association with the cardiovascular and immune … Read more
The reticuloendothelial system (RES), also known as the mononuclear phagocyte system (MPS), is a highly specialized and intricate network of cells and tissues distributed throughout the body. It plays a critical role in immune defense, blood filtration, tissue homeostasis, and metabolic regulation. This system is primarily responsible for phagocytosis, in which specialized cells engulf and … Read more
Disorders of blood, also known as hematological disorders, encompass a wide range of medical conditions that affect the blood, its components, or the organs involved in blood production and regulation. These disorders can impact the red blood cells, white blood cells, platelets, plasma, or bone marrow. Some common blood disorders include: Disorders of blood 1. … Read more
Blood transfusion is a life-saving medical procedure in which blood or its components are transferred from a donor to a recipient through intravenous infusion. It is commonly used to replace lost blood during surgery, injury, or diseases that affect blood production. Blood transfusions can help manage conditions such as anemia, bleeding disorders, and severe infections. … Read more
Blood groups: In the year 1900, Austrian scientist Karl Landsteiner discovered the ABO blood group system. In his experiments, he mixed different blood types, observing that the plasma from specific blood types produced agglutinates or formed clusters. This phenomenon was caused by the absence of molecules on red blood cells, which, in turn, led to … Read more
Mechanisms of coagulation: Blood coagulation, or clotting, is a complex and tightly regulated physiological mechanism that prevents excessive bleeding following a vascular injury. It involves a series of sequential and interrelated reactions that ultimately lead to the formation of a blood clot. The coagulation process can be divided into three main pathways: intrinsic, extrinsic, and … Read more
Anemia, a common blood disorder, is characterized by a reduced number of red blood cells (RBCs) or a decreased amount of hemoglobin in the blood, which reduces the blood’s capacity to carry oxygen to body tissues. Anemia can cause various symptoms and health issues, and various underlying conditions can lead to it. Here’s a detailed … Read more
Formation of Hemoglobin Hemoglobin is a crucial protein found in red blood cells (RBCs) that plays an essential role in oxygen transport from the lungs to various tissues and the return of carbon dioxide for exhalation. It is a metalloprotein composed of iron and globin chains that binds oxygen molecules efficiently. The formation of hemoglobin … Read more
