AP BIOLOGY

Detailed explanation-1: -The arteries (red) carry oxygen and nutrients away from your heart, to your body’s tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body’s tissues.

Detailed explanation-2: -Arteries always carry oxygen-rich blood.

Detailed explanation-3: -Answer and Explanation: The statement is false, although it is almost true-most arteries do carry oxygenated blood away from the heart, and most veins do carry deoxygenated blood toward the heart.

Detailed explanation-4: -Both the heart and arteries contract to pump blood throughout the body. Arteries carry oxygen-rich blood to capillaries. Plasma prevents the loss of blood by causing clotting.

Detailed explanation-5: -The left atrium receives blood from the lungs. This blood is rich in oxygen. The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-rich blood.