I WONDER - How Long Is The Circulatory System?

The circulatory system is essential for transporting blood, oxygen, and nutrients throughout the body. It consists mainly of veins and arteries, which, if laid out, would stretch over 60,000 miles, enough to circle the Earth 2.5 times. This vast network contains about 5 liters of blood.

What is the primary function of the circulatory system?

• To control body temperature

• To transport blood, oxygen, and nutrients

• To digest food

• To produce hormones

What are the main components of the circulatory system?

• Bones and muscles

• Nerves and neurons

• Skin and hair

• Veins and arteries

How long would the veins and arteries be if laid out end to end?

• 30,000 miles

• 10,000 miles

• 100,000 miles

• 60,000 miles

How many times could the circulatory system wrap around the Earth?

• 1 time

• 2 times

• 2.5 times

• 3 times

Approximately how much blood does the circulatory system contain?

• 7 liters

• 5 liters

• 10 liters

• 3 liters