Arteries always carry blood away from the heart. Veins always carry blood back to the heart.
Not all arteries carry high O2 blood. Not all veins carry low O2 blood.
Nutrients and oxygen have to get to the outside of the heart. So the blood vessels on the outside have that job. The nutrients and oxygen can't get to the cardiac muscle from inside the heart. Blood vessels that lead from the heart that are high in oxygen and nutrients have their first branch off the aorta that goes to these blood vessels. That's how important these vessels are to the heart and how it functions.
A tadpole's circulatory system has one loop and a 2 chamber heart. Oxygen-poor blood goes to the heart from the blood vessels in the body. Then the oxygen-poor blood goes up from the heart through blood vessels in the lungs. Next it comes out as oxygen-rich blood and goes back to the heart. Finally the oxygen-rich blood goes into the blood vessels in the body.
A tadpole's circulatory system has one loop and a 2 chamber heart. Oxygen-poor blood goes to the heart from the blood vessels in the body. Then the oxygen-poor blood goes up from the heart through blood vessels in the lungs. Next it comes out as oxygen-rich blood and goes back to the heart. Finally the oxygen-rich blood goes into the blood vessels in the body.
ARTERIES ALWAYS take blood AWAY from the heart.
Coronary arteries carry oxygen-rich blood to the heart muscle. These vessels originate from the aorta and provide the heart muscles with the necessary oxygen and nutrients for proper functioning.
The pulmonary veins carries oxygen rich blood from the lungs to the heart.
coronary blood vessels.......
The heart and your blood vessels
The three components of the cardiovascular system are the heart, blood vessels (arteries, veins, and capillaries), and blood. The heart pumps blood through the blood vessels, which transport oxygen, nutrients, and waste products throughout the body.
Blood veesels that are red are carrying blood that is rich in oxygen. Blood vessels that are blue are carrying blood that is oxygen poor. Red blood cells carry the oxygen, and they are the parts of the blood that turns red when carrying oxygen.
Pulmonary artery
The coronary arteries are the blood vessels that bring oxygenated blood to the muscle of the heart.