Phasic receptor. A phasic receptor is a sensory receptor that returns to its resting potential even though the stimulus is still applied. The process by which the magnitude of the generator potential decreases, even when the stimulus is maintained, is called adaptation. 1  Pacinian corpuscles. 2  Tonic receptor. 3  Phasic transmitter.
The normal resting adult heart beats regularly at an average rate of 60-100 times per minute. How fast the heart beats (heart rate) is governed by the speed of electrical signals originating from the pacemaker of the heart, the SA node.
Without nervous system control, your heart would beat around 100 times per minute. However, when you are relaxed, your parasympathetic nervous system sets a resting heart beat rate of about 70 beats per minute, (resting heart rate is usually between 72-80 beats per minute in women and 64-72 beats per minute in men).0-100 beats per minute is the normal range for healthy adults. Count for a full minute during different times of the day as your heartrate fluctuates with activity, anxiety/stress and even the time of day.