Examlex
The neurotransmitter responsible for regulating our mood states is acetylcholine.
Foramen Ovale
An opening in the heart's atrial septum present in the fetus, which normally closes soon after birth.
Pulmonary Trunk
The major blood vessel that carries blood from the right ventricle of the heart to the lungs for oxygenation.
Aortic Semilunar Valve
A valve in the heart located between the left ventricle and the aorta that prevents blood from flowing back into the heart.
Mitral Valve
A valve in the heart that lets blood flow from the left atrium to the left ventricle, preventing backflow.
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