Relationship between the blood circulatory system and other body systems

Relationship between the blood circulatory system and other body systems

The blood circulatory system interacts closely with several other body systems, including the digestive system, excretory system, and respiratory system, to maintain overall body function.

Relationship between the blood circulatory system and the digestive system

1. Oxygenated blood flows to the small intestine, facilitating the absorption of nutrients.
2. Digested foods are carried from the small intestine to the liver via the portal vein.
3. After processing in the liver, blood is transported through the hepatic vein, which connects to the vena cava and returns blood to the heart.

Relationship between the blood circulatory system and the excretory system

1. Oxygenated blood is carried to the kidneys through the renal artery.
2. Inside the kidneys, the blood is filtered to remove:
   • Urea
   • Mineral salts
   • Excess water
3. The filtered blood exits the kidneys via the renal vein, which joins the vena cava and returns to the heart.