What are the main functions of the lymphatic system?

The lymphatic system drains excess tissue fluid into the venous system, absorbs and transports fats from the intestine to the blood, and provides immunological defense against pathogens.

What are the primary components of the lymphatic system?

The lymphatic system includes lymph, lymph capillaries, lymph vessels, lymphoid organs like lymph nodes, spleen, and thymus, as well as MALT and bone marrow.

How does lymph differ from blood plasma?

Lymph is similar to plasma but lacks plasma proteins. Intestinal lymph, known as chyle, is milky because of its fat content and contains lymphocytes and proteins.

Where are lymph capillaries absent in the body?

Lymph capillaries are absent in the epidermis, nails, cornea, brain, spinal cord, splenic pulp, and bone marrow. They are more permeable than blood capillaries and found in skin, mucosa, and serous membranes.

What is the role of lymph nodes in the lymphatic system?

Lymph nodes filter lymph, produce lymphocytes and plasma cells, and have a structure with cortex for B-cells and paracortex for T-cells. They are located in areas such as the cervical and axillary regions.

What are the differences between the thoracic duct and the right lymphatic duct?

The thoracic duct drains most of the body into the left subclavian vein, while the right lymphatic duct drains the right upper quadrant into the right subclavian vein.

How do T lymphocytes and B lymphocytes contribute to immunity?

T lymphocytes handle cell-mediated immunity with cytotoxic and helper T-cells, while B lymphocytes provide humoral immunity by producing antibodies through plasma cells and memory B-cells.

What are some common clinical conditions related to the lymphatic system?

Common conditions include lymphoedema, lymphangitis, elephantiasis, splenomegaly, lymphadenitis, and cancer spread through lymph vessels.

Lymphatic System – Vessels, Nodes & Key Functions

❓ Frequently Asked Questions