What are the 4 functions of the cardiovascular system?
Functions of the cardiovascular system
- Circulates OXYGEN and removes Carbon Dioxide.
- Provides cells with NUTRIENTS.
- Removes the waste products of metabolism to the excretory organs for disposal.
- Protects the body against disease and infection.
- Clotting stops bleeding after injury.
How does blood circulate in the human body?
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.
What are the 2 major veins?
The two largest veins in the body are the superior vena cava, which carries blood from the upper body directly to the right atrium of the heart, and the inferior vena cava, which carries blood from the lower body directly to the right atrium.
What are the 5 main coronary arteries?
Structure
- Left coronary artery (LCA) Left anterior descending artery. Left circumflex artery. Posterior descending artery. Ramus or intermediate artery.
- Right coronary artery (RCA) Right marginal artery. Posterior descending artery.
What causes artery blockage?
If you have too many cholesterol particles in your blood, cholesterol may accumulate on your artery walls. Eventually, deposits called plaque may form. The deposits may narrow or block your arteries. The plaque can also burst, causing a blood clot.
What is the main vein in the heart?
The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
Which finger has a vein that goes straight to the heart?
Vena amoris is a Latin name meaning, literally, “vein of love”. Traditional belief established that this vein ran directly from the fourth finger of the left hand to the heart.