MICROANATOMY

Detailed explanation-1: -The given statement is false. The lymphatic vessels of the lymphatic system contain one-way valves. circulatory system. The lymphatic fluid gathers from the tissues and enters the valved lymphatic ducts.

Detailed explanation-2: -Lymphatic Vessels The wall of the lymph capillary is composed of endothelium in which the simple squamous cells overlap to form a simple one-way valve. This arrangement permits fluid to enter the capillary but prevents lymph from leaving the vessel.

Detailed explanation-3: -Lymphatic capillaries are slightly larger in diameter than blood capillaries and contain flap-like “minivalves” that permit interstitial fluid to flow into them but not out, under normal conditions.

Detailed explanation-4: -Interstitial fluid, formed from the extravasation of solute and fluid from the capillaries, enters blind-ended sacs composed only of an endothelial layer that is tethered to the interstitial matrix. These bulbous sacs (10–60 m diameter) are called initial, or terminal, lymphatics.