Consists of heart, blood, and blood vessels
1. Delivers important things through your body like oxygen and nutrients
2. Removes the waste from your body like carbon dioxide
3. Fights disease and heals cuts to prevent blood loss
Heart: is a pump that circulates the blood throughout the body.
Parts of the heart:
Aorta: Carries oxygenated blood to the body.
Pulmonary Vein: Carries blood with oxygen from the lungs to the heart.
Left Atrium: Pumps blood with oxygen to the left ventricle.
Left Ventricle: Pumps blood with oxygen away from the heart.
Superior Vena Cava: Carries blood from the upper body back to the heart.
Right Atrium: Receives blood without oxygen from the body.
Right Ventricle: Pumps blood without oxygen to the lungs, so it can become oxygenated.
Pulmonary Artery: Carries blood without oxygen from the heart to lungs.
Blood: Transports oxygen, nutrients, wastes, hormones.
Closed System- A place that is isolated from its surroundings from a wall that tells what can go through and what can't.
1. Pulmonary Circulation: Vessels transport blood from the heart to the lungs and back to the heart.
2. Systemic Circulation: Vessels carry the blood from the heart to tissues all throughout the body, and then blood returns to the heart from the body.
Flow of blood:
1. Blood that doesn't have enough oxygen enters the heart through the right atrium and then moves to the right ventricle.
2. From the right ventricle, the heart pumps blood to the lungs to collect oxygen.
3. The blood returns to the heart; entering the left atrium and then moves into the left ventricle.
4. Blood is pumped into the aorta to be separated through arteries, veins and capillaries, reaching the organs and tissues of the body.
Blood Vessel Types:
1. Arteries are thick walled, flexible vessels that carry blood away from the heart. The pulmonary arteries take blood that is low in oxygen from the heart to the...