10 Questions
Which muscle protracts the shoulder girdle and can cause winging of the scapula if paralyzed?
Serratus Anterior
What is the nerve supply for the Serratus Anterior muscle?
Long Thoracic Nerve
Which muscle, when acting with the trapezius, rotates the scapula so that the glenoid cavity looks upwards?
Serratus Anterior
What is the origin of the Trapezius muscle?
Back of skull and neck
Where are the lower fibers of the Trapezius muscle inserted?
Rough tubercle on the crest of the spine of scapula
Which muscle elevates the shoulder girdle and rotates the scapula so that the glenoid cavity looks upwards?
Trapezius
What is the action of the middle fibers of the Trapezius muscle?
Retract the scapula
Where does the Latissimus dorsi muscle originate from?
Spines of lower thoracic spines
What is the insertion point of the Latissimus dorsi muscle?
Floor of bicipital groove of humerus
What is the action of the Latissimus dorsi muscle?
Extends, medially rotates, and adducts the arm
Test your knowledge on the function and innervation of the serratus anterior muscle, along with its role in shoulder protraction and scapular rotation. Learn about the potential consequences of its paralysis and its relationship with the trapezius muscle.
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