Exam 2 origin,insertion,action

What 3 muscles originate on scapula & insert on humerus

• Deltoid

• Teres minor

• Latissimus dorsi

• Supraspinatus

Muscles that move the scapula?

• Trapezius, rhomboideus

• Pectoralis minor, Serratus anterior

• Serratus anterior, pectoralis major

• Trapezius, bicep femoris

origin of trapezius (moves the scapula)

Insertion of trapezius

Action of the trapezius

Origin, insertion, & action of the Supraspinatus

Origin of subcapularis

Insertion of subscapularis

Action of the subscapularis

If AR is longer what is the mechanical advantage (MA)

• <1

• =1

• >1