Marsupials have a closed and complete circulatory system. The heart has four chambers and the arterial blood does not mix with venous blood.
lymphatic capillaries
Coronary sinus
close circulatory system
Very simply put the venous system, the arterial system and your heart. The venous system bring blood from your organs and extremities to your heart, which pumps it and the arterial system takes it from your heart to your organs and extremities.
The lymphatic system works alongside the circulatory system to help maintain fluid balance in the body. It collects excess fluid and proteins that leach out of blood vessels and returns them to the bloodstream. The lymphatic system also plays a key role in immune function by transporting white blood cells and filtering out harmful substances.
blood vessels which carry blood back to the heart from body regions.To understand vein disease, which is the primary cause of varicose veins, it's first important to understand the venous system of the human body. The venous system is the part of the circulatory system that returns deoxygenated blood through veins back to the heart to be recirculated. By contrast, the arterial system carries oxygenated blood away from the heart to be distributed throughout the body. The smallest parts of the venous system are the capillaries, which feed into larger superficial veins.
Aqueous humor drains into the scleral venous sinus, also known as the canal of Schlemm. This drainage pathway helps maintain intraocular pressure by allowing fluid to exit the eye. A blockage in this drainage system can lead to increased pressure inside the eye, known as glaucoma.
Lymph reenters the venous circulation through the subclavian veins near the base of the neck. This junction is where lymphatic vessels empty into the bloodstream, allowing lymph fluid to return to the circulatory system.
The aqueous humor of the eye is reabsorbed into venous blood through the trabecular meshwork and Schlemm's canal. This process helps maintain the appropriate pressure within the eye, known as intraocular pressure. Imbalance in the production and drainage of aqueous humor can lead to conditions like glaucoma.
There is no system that actually does that, the closest thing to that process is the heart and veins that returns lymphatic fluid, which is basically interstitial fluid plus white blood cells. The Lymphatic system.
venous insufficiency