| Abbreviations | Meaning |
 | IM | Inspiratory Muscles |
| RECT | Rectal; Rectification, Rectified; Rectum; Rectus [muscle] |
| SRM | Spontaneous Rupture Of Membranes; Standard Reference Material; Superior Rectus Muscle |
| RSR | Right Superior Rectus (muscle) |
| SMCA | Smooth Muscle Contracting Agent |
| MRF | Muscle Regulatory Factor |
| HASM | Human Airway Smooth Muscle |
| PM | Pectinate Muscle |
| BSMC | Bronchial Smooth Muscle Cell |
| TM | Temporalis Muscle |
| STR | Slow-twitch Red (skeletal Muscle) |
| SCM | Subclavius Muscle |
| RLR | Right Lateral Rectus [muscle] |
| MM | Methylmalonyl; Millimeter; Mucous Membrane; Muscles |
| ASMC | Arterial Smooth Muscle Cell |
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