Final answer:
The aorta and arterioles carry oxygenated blood from the heart to the body's tissues, where it distributes essential oxygen and nutrients.
Step-by-step explanation:
The aorta and arterioles are part of the systemic circulation that transport oxygenated blood from the heart to the various parts of the body that need oxygen and nutrients. The arteries, including the aorta, carry blood away from the heart. As blood travels through the major arteries, it is distributed to different limbs and organs through smaller branches and arterioles. This ensures that the oxygen-rich blood reaches deeply into the muscles and organs where it is needed. Blood becomes oxygenated in the lungs, where gas exchange eliminates carbon dioxide from the blood and replenishes it with oxygen, before returning to the heart and being pumped out through the systemic arteries to the body.