Mean (±s.d.) citrate synthase (CS) activity [μmol of substrate converted to product min–1 (international units)g–1 wet mass of tissue] at 20°C in opah extraocular muscles
| N . | Extraocular muscle . | Citrate synthase activity (units g–1) . |
|---|---|---|
| 6 | Lateral rectus, proximal portion | 36.13±18.6 |
| 7 | Lateral rectus, distal portion | 3.65±1.62 |
| 9 | Superior rectus | 6.54±2.05 |
| 9 | Inferior rectus | 5.42±3.20 |
| 10 | Medial rectus | 13.13±3.85 |
| 2 | Medial rectus, proximal portion | 12.46 |
| 8 | Superior oblique | 7.33±5.34 |
| 8 | Inferior oblique | 3.22±1.40 |
| N . | Extraocular muscle . | Citrate synthase activity (units g–1) . |
|---|---|---|
| 6 | Lateral rectus, proximal portion | 36.13±18.6 |
| 7 | Lateral rectus, distal portion | 3.65±1.62 |
| 9 | Superior rectus | 6.54±2.05 |
| 9 | Inferior rectus | 5.42±3.20 |
| 10 | Medial rectus | 13.13±3.85 |
| 2 | Medial rectus, proximal portion | 12.46 |
| 8 | Superior oblique | 7.33±5.34 |
| 8 | Inferior oblique | 3.22±1.40 |
CS activity is significantly higher in the proximal portion of the lateral rectus muscle (LRM) than in the distal portion of the LRM, the superior rectus, inferior rectus, superior oblique and inferior oblique muscles (ANOVA, P<0.05). In addition, the medial rectus muscle has a significantly higher CS activity than the inferior oblique muscle (ANOVA, P<0.05)