AURÉVIA
AURÉVIA
Basic Biomedical Sciences One Cardiovascular System Video Correlates
VIDEO ONE: CARDIOVASCULAR SYSTEM: ANATOMY OF THE HEART BY LECTURIO
VIDEO ONE: CARDIOVASCULAR SYSTEM: ANATOMY OF THE HEART BY LECTURIO
The Anatomy of the Cardiovascular System
● The heart is not heart shaped!
○ The heart is conical in shape with a rounded point (not a sharp point).
● The heart in embryonic life starts out as a tube that folds on itself and develops into four Chambers.
● The heart is a pump.
○ It is a muscle pump that keeps the circulation continuously going in a circle.
● The blood circulates in a never ending circle.
○ What happens is the heart pumps the blood out full of oxygen and nutrients to the cells throughout the body.
○ Then, waste products are given to the blood. The blood returns to the lungs a deep blue and is then reoxygenated (gets oxygen again) and pumped out to the body. There's a continuous circle going on of the circulation.
● Here's a diagram that shows how the heart lies in the chest ● Notice that it is not directly in the center of the chest. In fact, it is slightly to the left. In this view, it looks like it's to the right, but if you were standing behind this person where the heart bulges out it would be to the left. You can see four points are marked on this skeleton with the heart drawn behind it.
● Behind the ribs and the breast bones which we call the sternum, you can see that there are four heart valves and the points that are marked are the places where we listen with our stethoscope when we want to hear that particular valve:
○ Aortic Valve
○ Pulmonic Valve
○ Tricuspid valve