BASI Pilates Anatomy Questions and
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which muscle is primarily responsible for spinal flexion?
✔✔Rectus abdominis
What is the main action of the latissimus dorsi?
✔✔Shoulder adduction, extension, and internal rotation
Which muscle stabilizes the scapula during arm movements?
✔✔Serratus anterior
What is the function of the gluteus medius?
✔✔Hip abduction and pelvic stabilization
Which muscle is considered part of the deep core or “powerhouse”?
✔✔Transversus abdominis
1
,What is the main action of the hamstrings?
✔✔Knee flexion and hip extension
Which muscle assists in breathing by elevating the ribs?
✔✔External intercostals
Which muscle group is responsible for plantarflexion of the ankle?
✔✔Gastrocnemius and soleus
Which muscle is primarily responsible for trunk rotation?
✔✔Internal and external obliques
What is the main function of the erector spinae?
✔✔Spinal extension and postural support
Which muscles are engaged during a Pilates roll-up?
✔✔Rectus abdominis, obliques, and transverse abdominis
2
,Which muscle stabilizes the shoulder during push-ups?
✔✔Rotator cuff muscles, including supraspinatus, infraspinatus, teres minor, and subscapularis
What is the main action of the quadratus lumborum?
✔✔Lateral flexion of the spine and stabilization of the pelvis
Which muscles are responsible for hip internal rotation?
✔✔Gluteus medius (anterior fibers) and tensor fasciae latae
Which muscle group extends the knee?
✔✔Quadriceps
Which muscle elevates and retracts the scapula?
✔✔Trapezius (upper and middle fibers)
Which muscles are primarily engaged during the Pilates hundred?
✔✔Transversus abdominis, rectus abdominis, obliques, and hip flexors
3
, What is the primary action of the pectoralis major?
✔✔Shoulder flexion, adduction, and internal rotation
Which muscle dorsiflexes the ankle?
✔✔Tibialis anterior
Which muscles are responsible for scapular depression?
✔✔Lower trapezius and pectoralis minor
Which muscle group is targeted during Pilates side leg lifts?
✔✔Gluteus medius, gluteus minimus, and tensor fasciae latae
Which muscles are involved in posterior pelvic tilt?
✔✔Rectus abdominis and gluteus maximus
Which muscle elevates the first rib during deep inhalation?
✔✔Scalene muscles
4
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which muscle is primarily responsible for spinal flexion?
✔✔Rectus abdominis
What is the main action of the latissimus dorsi?
✔✔Shoulder adduction, extension, and internal rotation
Which muscle stabilizes the scapula during arm movements?
✔✔Serratus anterior
What is the function of the gluteus medius?
✔✔Hip abduction and pelvic stabilization
Which muscle is considered part of the deep core or “powerhouse”?
✔✔Transversus abdominis
1
,What is the main action of the hamstrings?
✔✔Knee flexion and hip extension
Which muscle assists in breathing by elevating the ribs?
✔✔External intercostals
Which muscle group is responsible for plantarflexion of the ankle?
✔✔Gastrocnemius and soleus
Which muscle is primarily responsible for trunk rotation?
✔✔Internal and external obliques
What is the main function of the erector spinae?
✔✔Spinal extension and postural support
Which muscles are engaged during a Pilates roll-up?
✔✔Rectus abdominis, obliques, and transverse abdominis
2
,Which muscle stabilizes the shoulder during push-ups?
✔✔Rotator cuff muscles, including supraspinatus, infraspinatus, teres minor, and subscapularis
What is the main action of the quadratus lumborum?
✔✔Lateral flexion of the spine and stabilization of the pelvis
Which muscles are responsible for hip internal rotation?
✔✔Gluteus medius (anterior fibers) and tensor fasciae latae
Which muscle group extends the knee?
✔✔Quadriceps
Which muscle elevates and retracts the scapula?
✔✔Trapezius (upper and middle fibers)
Which muscles are primarily engaged during the Pilates hundred?
✔✔Transversus abdominis, rectus abdominis, obliques, and hip flexors
3
, What is the primary action of the pectoralis major?
✔✔Shoulder flexion, adduction, and internal rotation
Which muscle dorsiflexes the ankle?
✔✔Tibialis anterior
Which muscles are responsible for scapular depression?
✔✔Lower trapezius and pectoralis minor
Which muscle group is targeted during Pilates side leg lifts?
✔✔Gluteus medius, gluteus minimus, and tensor fasciae latae
Which muscles are involved in posterior pelvic tilt?
✔✔Rectus abdominis and gluteus maximus
Which muscle elevates the first rib during deep inhalation?
✔✔Scalene muscles
4
