BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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only in the thoracic region
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only in the lower extremities
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in almost all areas of the body that have blood vessels
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only in the right side of head & neck, right side of chest & right arm
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Detailed explanation-1: -Lymph capillaries are found in all regions of the body except the bone marrow, central nervous system, and tissues, such as the epidermis, that lack blood 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.
Detailed explanation-2: -Lymphatic vessels are tube-like structures that carry fluid (called lymph) away from the tissues to deliver it back into the blood’s circulation. Unlike blood vessels that circulate blood in a continuous, closed-loop system, lymphatics carry fluid in one direction.
Detailed explanation-3: -Lymph nodes are located in many parts of the body, including the neck, armpit, chest, abdomen (belly), and groin. They contain immune cells that can help fight infection by attacking and destroying germs that are carried in through the lymph fluid. There are hundreds of lymph nodes throughout the body.
Detailed explanation-4: -Lymph (clear fluid) and lymphocytes travel through the lymph vessels and into the lymph nodes where the lymphocytes destroy harmful substances. The lymph enters the blood through a large vein near the heart.