BIOLOGY - Physiology - Lymphatic system

The lymphatic system is a crucial part of the body's immune and waste removal processes. It consists of a network of vessels that transport lymph, a fluid containing white blood cells, throughout the body. The system has three main functions: fighting infections, draining excess fluid, and removing waste. Lymph nodes filter harmful substances, while organs like the spleen and thymus support immune function. Maintaining lymphatic health involves staying hydrated and active. However, issues can arise, such as infections or cancer spreading through the lymphatic system.

What is the primary role of lymphocytes in the lymphatic system?

• To carry nutrients

• To fight infections

• To transport oxygen

• To produce hormones

What percentage of tissue fluid becomes lymph?

• 20%

• 5%

• 15%

• 10%

How do lymph nodes contribute to the immune system?

• By storing excess water

• By generating energy

• By filtering and destroying harmful substances

• By producing red blood cells

Which organ is NOT part of the lymphatic system?

• Spleen

• Thymus

• Tonsils

• Liver

What can help maintain a healthy lymphatic system?

• Sleeping more

• Drinking lots of water and exercising

• Avoiding sunlight

• Eating more sugar