Lymphatic System Concepts and Functions

The video explains the lymphatic system, a network of capillaries, vessels, lymph nodes, and lymphoid organs that transport lymph fluid from tissues to the circulatory system. It highlights the system's role in the immune response, describing lymph as a transparent fluid rich in white blood cells, particularly lymphocytes. The lymphatic system's primary functions include fluid removal, immune cell production, and lymph transport. It operates through muscle contractions and valves to prevent reflux. The video also discusses potential diseases like lymphomas and leukemias affecting the lymphatic system.

What is the primary function of the lymphatic system?

• Transport oxygen

• Produce red blood cells

• Filter tissue fluid and return it to the circulatory system

• Regulate body temperature

Which type of cell is most abundant in lymph?

• Neutrophils

• Platelets

• Lymphocytes

• Red blood cells

What percentage of white blood cells in lymph are lymphocytes?

• 30%

• 99%

• 70%

• 50%

How is lymph transported through the lymphatic vessels?

• Through muscle contractions and arterial pulsations

• By the heart's pumping action

• By gravity

• Through nerve impulses

What is the role of valves in lymphatic vessels?

• To filter lymph

• To prevent the backflow of lymph

• To produce lymphocytes

• To increase blood pressure

Which of the following is NOT a function of the lymphatic system?

• Production and diffusion of immune cells

• Production of red blood cells

• Absorption of lipids

• Removal of excess fluids from tissues

What happens if a lymphatic vessel is obstructed?

• Accumulation of fluid causing edema

• Increased heart rate

• Increased blood pressure

• Decreased immune response

What are lymph nodes also known as?

• Veins

• Congonhas

• Capillaries

• Arteries

What can cause an increase in the size and pain of lymph nodes?

• Excessive exercise

• High blood pressure

• Infections

• Dehydration

Which diseases are associated with malignant lymphocytes?

• Diabetes

• Asthma

• Lymphomas and leukemias

• Hypertension