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.
Normal Heart Beats Per Minute. Normal heart rate may also be referred to as the resting heart rate, the measure of which for an adult is about 60 to 100. In case of a well-trained athlete, the measure is as low as 40 to 60.For an adult, a lower measure of heart beats per minute at rest is indicative of healthy heart function and better cardiovascular state. Coming to children (ages 6 - 15 years), the normal measure is 70 to 100 beats per minute.It is to be known that several factors are involved in influencing the heart rate.n case of a well-trained athlete, the measure is as low as 40 to 60. For an adult, a lower measure of heart beats per minute at rest is indicative of healthy heart function and better cardiovascular state. Coming to children (ages 6 - 15 years), the normal measure is 70 to 100 beats per minute.