The spinal muscles that are activated first with rapid arm movements are the:
A)Erector spinae and rectus abdominis.
B)Internal and external obliques.
C)Multifidus and internal obliques.
D)Transversus abdominis and multifidus.

Question

Quizplus · Accepted Answer

The transversus abdominis and multifidus are deep stabilizing muscles of the spine that activate first to protect the spine during quick arm movements. The erector spinae and rectus abdominis are larger superficial muscles that do not activate as quickly in response to sudden movements. The oblique muscles are also not as involved in spinal stabilization as the transversus abdominis and multifidus.

The Spinal Muscles That Are Activated First with Rapid Arm