BIOLOGY - Physiology - Lymphatic system

The lymphatic system is a crucial part of the body's defense 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 spread, highlighting the system's importance.

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

• To fight infections

• To transport oxygen

• To carry nutrients

• To produce hormones

What percentage of tissue fluid becomes lymph?

• 15%

• 5%

• 20%

• 10%

How do lymph nodes contribute to the immune system?

• By producing red blood cells

• By generating energy

• By filtering and destroying harmful substances

• By storing excess water

Which organ is NOT part of the lymphatic system?

• Spleen

• Thymus

• Liver

• Tonsils

What can help maintain a healthy lymphatic system?

• Eating more sugar

• Drinking lots of water and exercising

• Sleeping more

• Avoiding sunlight