The walls of lymphatic vessels are similar to those of cardiovasculara...
Lymph or lymphatic capillaries are tiny thin-walled vessels, closed at one end and located in the spaces between cells throughout the body, except in the central nervous system and non-vascular tissues. Lymphatic capillaries are slightly larger in diameter and have greater oncotic pressure than blood capillaries.
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The walls of lymphatic vessels are similar to those of cardiovasculara...
The correct answer is b) veins.
Explanation:
Lymphatic vessels and cardiovascular vessels have some similarities in their structure, but they also have some distinct differences. Let's explore the similarities and differences between the walls of lymphatic vessels and cardiovascular vessels.
Similarities:
1. Both lymphatic vessels and veins have relatively thin walls compared to arteries. This is because their main function is to transport fluid (lymph or blood) back to the heart, rather than withstanding high pressure like arteries.
2. Both lymphatic vessels and veins have valves. Valves help to prevent backflow and ensure a unidirectional flow of fluid.
3. Both lymphatic vessels and veins have a similar three-layered structure: an inner endothelium, a middle layer of smooth muscle and elastic fibers (the tunica media), and an outer layer of connective tissue (the tunica externa).
Differences:
1. Lymphatic vessels have thinner walls compared to veins. This is because lymphatic vessels transport lymph, which is a clear fluid containing lymphocytes and waste products, while veins transport blood, which carries oxygen, nutrients, and waste products.
2. Lymphatic vessels have a less organized structure compared to veins. Veins have a more distinct and organized layer of smooth muscle in their walls, while lymphatic vessels have a less defined smooth muscle layer.
3. Lymphatic vessels have more valves compared to veins. Valves in lymphatic vessels are located closer together and are more numerous compared to those in veins. This is because lymphatic vessels have a lower pressure system and rely on valves to help propel lymph forward.
Conclusion:
In conclusion, while lymphatic vessels and cardiovascular vessels have some similarities in their wall structure, the walls of lymphatic vessels are more similar to veins. Both lymphatic vessels and veins have relatively thin walls, valves, and a three-layered structure. However, lymphatic vessels have thinner walls, a less organized smooth muscle layer, and more valves compared to veins.
The walls of lymphatic vessels are similar to those of cardiovasculara...
Option B is correct..
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