____ carry oxygen rich blood from the heart to the body's tissues and organs.
O Veins
O Arteries
O Capillaries
O Alveoli
Arteries carry oxygen-rich blood from the heart to the body's tissues and organs.
To determine the correct answer, we need to understand the function of each of these choices.
1. Veins: Veins carry oxygen-poor blood from the body's tissues and organs back to the heart.
2. Arteries: Arteries carry oxygen-rich blood away from the heart to supply oxygen to the body's tissues and organs.
3. Capillaries: Capillaries are small, thin blood vessels that connect arteries to veins. They are responsible for the exchange of oxygen, nutrients, and waste products between the blood and the body's tissues.
4. Alveoli: Alveoli are tiny air sacs in the lungs where gas exchange occurs. They are not directly involved in transporting blood.
Therefore, the correct answer is arteries.