Shoulder Muscles Quiz

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Questions and Answers

Which muscle attaches the scapula with the humerus?

  • Pectoralis major
  • Subscapularis
  • Deltoid (correct)
  • Trapezius

Which part of the scapula does the deltoid muscle originate from?

  • Acromion
  • Clavicle
  • Spine of scapula (correct)
  • Deltoid tuberosity in humerus

What is the action of the anterior fibers of the deltoid muscle?

  • Adduction
  • Flexion
  • Medial rotation
  • Abduction (correct)

What is the action of the subscapularis muscle?

<p>Medial rotation (C)</p> Signup and view all the answers

What is the nerve supply to the deltoid muscle?

<p>Muscular branch of axillary nerve (C)</p> Signup and view all the answers

Flashcards

Deltoid Muscle

Connects the scapula to the humerus.

Deltoid Origin

Spine of the scapula.

Anterior Deltoid Action

Abduction of the arm.

Subscapularis Action

Medial rotation of the arm.

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Deltoid Nerve Supply

Muscular branch of the axillary nerve.

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Study Notes

Muscles of the Scapula and Humerus

  • The muscle that attaches the scapula with the humerus is the deltoid muscle.

Deltoid Muscle

  • The deltoid muscle originates from the anterior surface of the acromion process and the lateral border of the scapula spine.
  • The anterior fibers of the deltoid muscle are responsible for flexion and medial rotation of the humerus.
  • The deltoid muscle receives its nerve supply from the axillary nerve (C5-C6).

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