Circulatory System - Blood Manual

Transport

One of the main functions of the circulatory system; includes bringing oxygen from lungs to tissues and carbon dioxide from tissues to lungs.

Protection

A primary function of the circulatory system; includes involvement of white blood cells and antibodies in defending against pathogens.

Regulation

The function of the circulatory system in stabilizing body fluids and regulating body temperature.

Erythrocytes

Red Blood Cells (RBCs) responsible for transporting oxygen throughout the body.

Leukocytes

White Blood Cells (WBCs) that play a crucial role in the immune system by defending the body against infections.

Platelets

Small cell fragments essential for blood clotting, helping to prevent bleeding.

Granulocytes

A subtype of leukocytes characterized by granules in their cytoplasm, involved in inflammatory responses.

Neutrophils

The most abundant type of white blood cells, responsible for the phagocytosis of bacteria and fungi.

Eosinophils

Leukocytes involved in combating parasitic infections and modulating allergic responses.

Basophils

Leukocytes playing a role in inflammatory and allergic reactions by releasing histamine.

Agranulocytes

A main category of white blood cells, including lymphocytes and monocytes, vital for adaptive immune responses.

Lymphocytes

Comprising about 20-40% of the total white blood cell count; central to the adaptive immune response.

Monocytes

Cells that differentiate into macrophages and dendritic cells, essential for phagocytosis and antigen presentation.

Blood Serum

Clear, yellowish part of the blood that remains after clots; contains water, electrolytes, proteins, and hormones.

Blood Plasma

Liquid component of blood making up about 55% of its total volume; a medium for transporting cells, nutrients, and waste.

Antigens

Substances that provoke an immune response by binding to antibodies or lymphocyte receptors.

Antibodies

Specialized proteins produced by B lymphocytes; they neutralize pathogens and are crucial for the immune response.