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In humans, the cisterna chyli is located posterior to the abdominal aorta on the anterior aspect of the bodies of the first and second lumbar vertebrae (L1 and L2). There it forms the beginning of the primary lymph vessel, the thoracic duct, which transports lymph and chyle from the abdomen via the aortic opening of the diaphragm up to the junction of left subclavian vein and internal jugular ...
Chyle (from Greek χυλός (chylos) 'juice' [1]) is a milky bodily fluid consisting of lymph and emulsified fats, or free fatty acids (FFAs). It is formed in the small intestine during digestion of fatty foods, and taken up by lymph vessels specifically known as lacteals. The lipids in the chyle are colloidally suspended in chylomicrons.
The meningeal lymphatic system is composed of a network of vessels along the dural sinus in the dura which express lymphatic endothelial cell marker proteins, including PROX1, LYVE1, and PDPN. The vessels extend along the length of both the superior sagittal and transverse sinuses and directly connects to the deep cervical lymph nodes. [ 1 ]
The lymphatic system, or lymphoid system, is an organ system in vertebrates that is part of the immune system and complementary to the circulatory system. It consists of a large network of lymphatic vessels , lymph nodes , lymphoid organs, lymphatic tissue and lymph .
Lymph sacs are a part of the development of the lymphatic system, known as lymphangiogenesis. [1] The lymph sacs are precursors of the lymph vessels. [2] These sacs develop through the processes of vasculogenesis and angiogenesis. However, there is evidence of both of these processes in different organisms.
The lymph transport, in the thoracic duct, is mainly caused by the action of breathing, aided by the duct's smooth muscle and by internal valves which prevent the lymph from flowing back down again. There are also two valves at the junction of the duct with the left subclavian vein, to prevent the flow of venous blood into the duct.
They receive the lymph from the lower limbs, from the walls and viscera of the pelvis, from the kidneys and suprarenal glands and the deep lymphatics of the greater part of the abdominal wall. Ultimately, the lumbar trunks empty into the cisterna chyli , a dilatation at the beginning of the thoracic duct .
Chyle is composed of lymph fluid and fats that are absorbed from the small intestine by specialized lymphatic vessels called lacteals during digestion. The accumulations are described based on location: chylothorax is chyle in the chest; chylopericardium is chyle trapped inside the sack surrounding the heart; chyloascites is chyle trapped in ...