GENERAL HISTOLOGY

Detailed explanation-1: -Lymph is transported throughout the lymphatic vasculature by intrinsic phasic contractions generated by the lymphatic muscle of collecting lymphatics that, along with valves, are necessary for unidirectional lymph flow.

Detailed explanation-2: -To ensure that fluid does not flow backward, all lymphatic have one-way valves. The forward flow of lymph is due to the pressure gradient created by the muscle contractions and respiratory movements. The key feature of lymphatic vessels is that they have thin endothelial walls and have an overlapping arrangement.

Detailed explanation-3: -The lymph moves in the body through its own vessels from the interstitial spaces to the subclavian veins at the base of the neck. The lymphatic system does not have the heart to pump it in all direction hence it flows in the upward direction only.