Torso Muscles Lab Practical

Abducts arm, stabilizes shoulder.

• Supraspinatus
• Deltoid
• Infraspinatus
• Subscapularis

Extends, laterally rotates, adducts arm, stabilizes shoulder.

• Rhomboid minor
• Rhomboid major
• Teres minor
• Teres major

Extends, adducts, medially rotates arm.

• Pectoralis minor
• Pectoralis major
• Teres minor
• Teres major

Extends, laterally rotates arm, stabilizes shoulder.

• Supraspinatus
• Deltoid
• Infraspinatus
• Subscapularis

Extends, medially rotates arm, stabilizes shoulder.

• Supraspinatus
• Deltoid
• Infraspinatus
• Subscapularis

Contracts it bring in air, relaxes to let air out.

• Transversus abdominus
• Internal intercostalis
• External intercostalis
• Diaphragm

Compresses abdomen, laterally rotates trunk.

• External oblique
• Internal oblique
• Transversus abdominus
• Rectus abdominus

Abducts, flexes, extends medially, and laterally rotates arm.

• Supraspinatus
• Deltoid
• Infraspinatus
• Subscapularis

Adducts, extends, and medially rotates arm, pulls shoulder inferiorly.

• Trapezius
• Latissimus dorsi
• Diaphragm
• Quadratus lumborum

Compresses abdomen, laterally rotates trunk.

• External oblique
• Internal oblique
• Transversus abdominus
• Rectus abdominus