Circulatory System Functions and Structures

The video explores the human circulatory system, detailing the journey of blood through the heart, blood vessels, and lungs. It explains the roles of red and white blood cells, platelets, and the importance of valves in veins. The video also covers the pulmonary and coronary circuits, emphasizing the significance of maintaining heart health through diet and exercise.

What is the primary function of red blood cells in the circulatory system?

• To regulate body temperature

• To fight infections

• To transport oxygen

• To carry nutrients

Which part of the heart receives blood from the lungs?

• Left ventricle

• Right atrium

• Left atrium

• Right ventricle

What is the role of the septum in the heart?

• To regulate heart rate

• To separate the heart into two sides

• To store oxygen

• To pump blood

Which type of blood vessel carries blood away from the heart?

• Capillaries

• Veins

• Lymph vessels

• Arteries

What is the main function of capillaries in the circulatory system?

• To transport blood to the heart

• To connect arteries and veins

• To store blood

• To regulate blood pressure

What is the primary role of white blood cells?

• To regulate body temperature

• To transport oxygen

• To fight infections

• To carry nutrients

What do B lymphocytes produce to help protect against diseases?

• Antibodies

• Hormones

• Red blood cells

• Platelets

Where does the gas exchange occur in the lungs?

• Trachea

• Alveoli

• Pleura

• Bronchi

What is the function of coronary arteries?

• To supply blood to the heart muscle

• To store oxygen

• To supply blood to the lungs

• To carry blood away from the heart

What can cause plaque to build up in arteries?

• A high-sugar diet

• Lack of exercise

• A high-fat diet

• Excessive water intake