| Ach | Acetylcholine |
| INa | Voltage-gated sodium current |
| Nav | Voltage-gated sodium channels |
| PE | Phenylephrine |
| SMCs | Smooth Muscle cells |
| TTX | Tetrodotoxin |
| Ach | Acetylcholine |
| INa | Voltage-gated sodium current |
| Nav | Voltage-gated sodium channels |
| PE | Phenylephrine |
| SMCs | Smooth Muscle cells |
| TTX | Tetrodotoxin |