During the fight-or-flight response, the body releases noradrenalin to increase heart rate and blood pressure.

During the stressful presentation, my body released a surge of noradrenaline that made my heart race.

During the stressful situation, the patient's noradrenalines surged, sharpening his focus and increasing his heart rate.

During the stress test, elevated levels of noradrenalins were detected in the patient's blood.

The researchers observed noradrenalinergic responses in the cortical neurons after the stress exposure.