In this lecture, we will be discussing
the anatomy and physiology of the heart.
First, the heart is a transport system
that consists of two side-by-side pumps.
On the left side of the heart, we're going to be receiving
oxygenated blood that is returning from the lungs
This is going to pump blood to the
body's tissue by way of the systemic circuit.
On the opposite side or the right side of the
heart, we're going to be receiving oxygen-poor blood
that is returning from the body's tissue and
here we're going to pump that blood to the lungs
so that we can get rid of the carbon
dioxide that has been picked up by the tissues
and we're going to pick up
oxygen from the atmosphere.
This is going to be our pulmonary circuit.
There are four chambers in the heart.
Two of these chambers are
referred to as our receiving chambers.
They include the left atrium which is going to receive blood
from the pulmonary circuit that has just been oxygenated.
and then we have the right atrium which
is going to receive blood that is returning
from the body's tissue by
way of the systemic circuit.
This blood has been deoxygenated.
The next chambers are the pumping chambers.
The left ventricle is going to pump
blood through the systemic circuit
and this blood is going to be oxygenated blood.
And the right ventricle is going to pump
deoxygenated blood through the pulmonary circuit
so that it may pick up oxygen from the atmosphere.