The neuron conveying impulses to the synapse.
Prepuce
The thin, delicate fold of skin that overlies the tip of the penis.
Preovulatory Phase
The menstrual cycle phase in which ovarian follicles develop; the follicular phase.
Premolar
Eight in number; a tooth with two cusps or points; bicuspids.
Preganglionic Fiber
Autonomic neurons that lead to a ganglion.
Potential Energy
The energy, existing in a body as a result of its position or state of existence, that is not being exerted at the time.
Postural Hypotension
Sudden reduction in blood pressure when changing posture; lightheadedness while changing positions.
Postsynaptic Neuron
The neuron that is stimulated/inhibited at the synapse.