Respiratory and circulatory system

While studying for their biology exam, Samuel asked Emma, "How are the blood vessels that carry blood from the heart to the body called?"

• Arteries

• Veins

• Capillaries

• Alveoli

Luna was studying the circulatory system in her biology class. She learned that the blood vessels that carry blood from the body to the heart are crucial for circulation. What are these blood vessels called?

• Arteries

• Veins

• Capillaries

• Alveoli

While studying the human circulatory system, Anika learned that the blood vessels that connect arteries and veins are crucial for blood flow. What are these blood vessels called?

• Alveoli

• Capillaires

• Bronchi

• Trachea

During a science class, Ethan learned that the organs in the ............................. system help us breathe.

Charlotte breathes in ​ (a)   and breathes out ​ (b)  

• oxygen

• carbon dioxide

James and Emma breathe in through their ​ (a)   ​and ​ (b)   . The air travels down the ​ (c)   and into two tubes, called ​ (d)   . They take air into the ​ (e)   .

• nose

• mouth

• trachea

• bronchi

• lungs

During a biology class, Abigail learned about the circulatory system. She discovered that veins play a crucial role in transporting blood throughout the body. What is the primary function of veins in the circulatory system?

• To carry oxygenated blood

• To carry deoxygenated blood

• To regulate blood pressure

• To facilitate gas exchange