Circulatory System

The video explains the circulatory system, which includes the cardiovascular and lymphatic systems. It details how the cardiovascular system circulates blood, delivering oxygen and nutrients while removing waste. The lymphatic system, which carries lymph, plays a crucial role in immune response and fluid balance. Key components like blood cells, plasma, and lymphatic organs such as the thymus, spleen, and tonsils are discussed. The video highlights the importance of these systems in maintaining health and fighting infections.

What is the primary function of the cardiovascular system?

• To transport blood and nutrients

• To filter waste from the body

• To digest food

• To produce hormones

Which type of blood vessel connects arteries and veins?

• Capillaries

• Veins

• Arteries

• Lymph nodes

What is the role of white blood cells in the blood?

• To carry oxygen

• To fight infections

• To clot blood

• To transport hormones

What fluid does the lymphatic system circulate?

• Lymph

• Plasma

• Water

• Blood

Which organ in the lymphatic system is responsible for filtering old blood cells?

• Heart

• Thymus

• Spleen

• Tonsils