5 Questions
Which muscle attaches the scapula with the humerus?
Deltoid
Which part of the scapula does the deltoid muscle originate from?
Spine of scapula
What is the action of the anterior fibers of the deltoid muscle?
Abduction
What is the action of the subscapularis muscle?
Medial rotation
What is the nerve supply to the deltoid muscle?
Muscular branch of axillary nerve
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).
Test your knowledge of the 6 muscles that attach the scapula to the humerus, including the deltoid muscle. Learn about their origins, insertions, actions, and nerve supply. Challenge yourself with questions about injuries and conditions related to the shoulder joint.
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