Muscles of the Upper Limb Examining Muscles of the Shoulder That Move the Scapul
ID: 3513911 • Letter: M
Question
Muscles of the Upper Limb Examining Muscles of the Shoulder That Move the Scapula wrist, and hanl. chat move the shosdder (discussed in this activity)and musdes that Three deep musdes on the anterior chorackc wall pectorals minos, subclaviss, and oee Activity n Ao stabliae the pectoral girdle during movements ai the shoulder O On a model, slentify the following shoulder muncles old process of scapula e of elavicle insertion Medial bonder of scapda Word Origins The origin of serratus anterior on the ribs resembles the cutning edge ot a serrated knife. This is the basis for the mascles name, serratus Anterior view IN THE CLINIC On a skeleton, use pipe cleaners to connect the origins and insertions of the pectoralis minor, subclavius, and serratus anterior. Visualize the paths of the muscles by observing the positions of the pipe cleaners. Answer the following questions: Will the pectoralis minor: Winged Scapula The serratus anterior keeps the scapula in position against the thoracik wal. If this muscle is paralyzed, the medial border of the scapula moves lateralhy and posterliorly. especially when the individual leans on the hands against a wall. This gives the scapula the appearance of a wing and, thus, this Elevate or depress the scapula? Inferiorly or superiorly rotate the scapula? condition is called a winged scapula. This injury can cause significant pain and loss of strength and flexibility at the shoulde Will the subclavius: Elevate or depress the clavicle? Physical therapy treatments include Will the serratus anterior range of motion and strengthening exercises with the patient wearing a brace to keep the scapula against the thoracic wal If paralysis is permanes corrective surgery might be require Protract or retract the scapula? Inferiorly or superiorly rotate the scapula? Muscles of the Upper and Lower LimbsExplanation / Answer
Q-2
A)pectoralis minor
Will depress the point of shoulder i.e depress scapula.
Will inferiorly rotate the scapula,it along with serratus anterior bring about protraction (that is pushing and punching action).
B) serratus anterior
Will protract the scapula.
Superiorly rotate the scapula.
(Q-1 is not visible but is solved)
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