I think they're arteries.
Arteries
Veins. Veins carry unoxygenated blood towards the heart.
The veins carries blood from the body to the heart.
Veins carry blood to the heart. Arteries carry blood away from the heart.
No...... Arteries carry blood away from the heart.
Yes. Veins carry blood to the heart, and arteries carry blood away from the heart.
Veins carry blood to the heart. Arteries carry blood away from the heart.
Arteries carry blood from the heart. In contrast, veins carry blood to the heart.
They are called veins. Arteries carry blood from the heart. Veins carry blood to the heart.
No. Veins carry blood to your heart and arteries carry blood away.Arteries carry blood away
All of them. Veins carry blood from the body to the heart, arteries carry blood from the heart to the body.
The arteries and veins are the tubes that are connected to the heart. Arteries carry blood away from the heart, and veins carry blood to the heart.