ANATOMY

Detailed explanation-1: -Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Detailed explanation-2: -Veins start as tiny blood vessels called venules, which become full-size veins as they come closer to your heart. Characteristics of Veins. Vein vs Artery. Veins are closer to the surface of your body, and arteries are deep inside your muscles.

Detailed explanation-3: -It’s important to stop the bleeding as soon as possible by applying firm pressure on the wound. If the bleeding doesn’t stop after a few minutes, the person becomes pale or unconscious or blood pressure drops, call 911. You should also get emergency help if the wound is very deep or if the person shows signs of shock.

Detailed explanation-4: -Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

Detailed explanation-5: -Veins are thin walled and have one-way valves that ensure blood flows toward the heart. The blood pressure in veins is very low. As veins get closer to the heart, they become larger and larger.