From the collecting ducts, lymph enters:
A.
Veins; plasma.
B.
Capillaries; blood supply.
C.
Lymph nodes; lymphatic trunks.
D.
Arteries; serum and becomes part of the.
The correct answer and Explanation is :
The correct answer is C. Lymph nodes; lymphatic trunks.
Here’s a detailed explanation:
Lymph is a clear fluid that circulates through the lymphatic system, which is a network of vessels and nodes throughout the body. This system is crucial for maintaining fluid balance, filtering out pathogens, and aiding in immune responses.
- Collection and Filtration: Lymphatic fluid starts as interstitial fluid in the tissues, which collects into small lymphatic capillaries. As this fluid moves through these capillaries, it is referred to as lymph. The lymphatic capillaries merge to form larger vessels known as lymphatic vessels.
- Transport through Lymphatic Vessels: These lymphatic vessels transport the lymph toward the lymph nodes. Lymph nodes are small, bean-shaped structures that are distributed throughout the lymphatic system. They act as filters, trapping and destroying pathogens and foreign particles. Lymph nodes are vital for immune surveillance and response.
- Exiting the Nodes: After passing through the lymph nodes, the lymph travels through larger lymphatic vessels called lymphatic trunks. The lymphatic trunks collect lymph from various regions of the body and channel it towards the major lymphatic ducts.
- Final Destination: The lymphatic trunks drain into the two main lymphatic ducts—the thoracic duct and the right lymphatic duct. These ducts then empty the lymph into the venous blood circulation at the junctions of the internal jugular vein and subclavian vein. This final stage is where the lymph becomes part of the blood plasma again.
So, from the collecting ducts, which are larger lymphatic vessels, the lymph enters the lymph nodes where it is further processed. After leaving the lymph nodes, it moves into the lymphatic trunks, which ultimately return it to the bloodstream, ensuring the fluid balance and contributing to the immune system.