Which of the following muscle groupings are considered postural muscles?
check a. Pectoralis major, scalenes
b. Serratus anterior, deep cervical flexors
c. Supraspinatus, infraspinatus
d. Vastus lateralis, vastus medialis
Explanation: Postural muscles work to sustain your posture within the gravity field. Both the pectoralis major and scalene muscles contribute to the postural integrity of the human body. Postural muscles consist of slow twitch fibers and are best suited for sustained work. They are also prone to hypertonicities.