👉 The drawn fluid, often referred to as venous blood or simply blood, is a complex mixture of water, proteins, nutrients, oxygen, and waste products that circulates through the body's veins. When blood flows back to the heart from the extremities, it forms a low-pressure area due to gravity and the elasticity of veins. This creates a drawn fluid effect, where blood is pushed upwards against gravity by the rhythmic contractions of the heart and the pressure gradients within the veins. This mechanism ensures that blood continues to circulate efficiently, even when the body is not in an upright position, preventing pooling and facilitating the exchange of gases, nutrients, and waste between the blood and tissues.
