Examlex
A format clock is an electrical device required by the FCC to make sure that all U.S. radio stations are technologically coordinated in the event of a national crisis.
Ventricles
Ventricles are chambers within the heart that pump blood out to the lungs and the rest of the body, crucial for the cardiac circulation process.
Epinephrine
Hormone secreted by the adrenal medulla in times of stress; also referred to as adrenaline.
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response; it affects heart rate, blood pressure, and glucose levels.
SA Node
The sinoatrial node, a group of cells located in the right atrium of the heart that generates electrical impulses initiating each heartbeat.
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