The Circulatory System

The Circulatory System

• The main function of the circulatory system is to transport nutrients to the body's cells through the blood.
• The circulatory system is formed by the heart, arteries, and veins.

Heart and Circulation

• The heart ensures blood circulation throughout the body with its 100,000 pulsations per day.
• The heart pumps blood out through the aorta, a major highway of the circulatory system.

Blood Flow

• Blood flows through the body, delivering oxygen and nutrients to cells through capillaries.
• Blood reaches the neck, head, and brain, then flows into the arms, thorax, abdomen, and legs.

Return Journey

• Blood returns to the heart through the inferior vena cava (from the lower body) and superior vena cava (from the arms and head).
• The blood gets oxygenated in the lungs and returns to the heart, where the journey starts again.

Fun Fact

• If all the arteries and veins were put in a single file, they would measure approximately 96,000 kilometers, equivalent to almost two and a half laps around the Earth.

Health Tips

• Regular physical exercise and a balanced diet are essential for the body to function well.
• A healthy diet should include vegetables, fruits, and fish, with reduced sugar and sweets intake.
• Limiting screen time (TV, computer) is also important for overall health.

The Circulatory System

• Main function: transport nutrients to body cells through blood
• Composed of heart, arteries, and veins

Heart and Circulation

• Heart ensures blood circulation with 100,000 pulsations per day
• Heart pumps blood out through the aorta, a major circulatory highway

Blood Flow

• Blood delivers oxygen and nutrients to cells through capillaries
• Blood flow sequence: neck, head, brain, arms, thorax, abdomen, and legs

Return Journey

• Blood returns to heart through inferior vena cava (lower body) and superior vena cava (arms and head)
• Blood gets oxygenated in lungs and returns to heart, restarting the journey

Circulatory System Facts

• Total length of arteries and veins: approximately 96,000 kilometers, equivalent to 2.5 laps around the Earth

Health Tips

• Regular physical exercise and balanced diet essential for overall health
• Healthy diet: vegetables, fruits, fish, reduced sugar and sweets, limited screen time

This quiz covers the basics of the circulatory system, including its main function, components, and blood flow. Learn about the heart's role in circulation and how blood flows through the body.