trunk

Question 1

trunk flexion

Answer 1

• internal obliques
• external obliques
• rectus abdominous
• psoas major

Question 2

trunk extension

Answer 2

• quadratus lumborum
• multifidus
• erector spinae

Question 3

trunk side flexion

Answer 3

• internal obliques
• external obliques
• multifidus
• erector spinae
• rectus abdominous
• quadratus lumborum

Question 4

trunk rotation

Answer 4

• internal obliques (ipsilaterally)
• external rotation (contralaterally)
• multifidus (contralaterally)