Table 7.
Mechanical characteristics of GI motility.
System | Pressure wave amplitude | Contraction phenomenon | Pressure wave frequency | Electrical activity | References |
---|---|---|---|---|---|
Esophagus | 40–180 mmHg (swallowing), 5–10 mmHg (peristaltic amplitude) | Connected to CNS | Swallowing, 1–2 min−1 | [327,328] | |
Stomach | <10 mmHg (antral), 60.5 ± 8.9 mmHg (Pylorus, Phase III) | MMC | 1–3 min−1 (antral, Phase III) | ≈3 min−1 (Slow wave) | [329] |
Small intestine | 18–62 mmHg (Phase III) | MMC | 11 min−1 (Phase III) | 10–20 min−1 | [318,322] |
Large Intestine | 14.6 ± 11.1 mmHg (simultaneous pressure waves) | Peristatis/retroperistatis, giant migrating contractions | Simultaneous pressure wave, 1.4 ± 0.6 min−1, 1–2 day−1 (giant migrating contractions) | 3–8 min−1 (Slow wave) | [330] |