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Cadaver Lab. Quadrangular Space, Triangular Space, and Triangular Interval

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Marisa DeLeonardis

on 13 July 2016

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Transcript of Cadaver Lab. Quadrangular Space, Triangular Space, and Triangular Interval

Created By: Marisa DeLeonardis
Assisted By: Michael Blalock Quadrangular Space, Triangular Interval, and Triangular Space Quadrangular Space
Borders: Teres Minor, Teres Major, Long-head and Lateral Head of the Triceps Brachii

Structures: Axillary Nerve and Posterior Circumflex Humeral Artery

Function:
-Posterior Circumflex Humeral Artery Supplies blood to the Glenohumeral joint
-Axillary Nerve innervates the Deltoid muscle, and Teres Minor muscle

Clinical Significance: Axillary Nerve may be injured by dislocations of the surgical neck because it is a common place for fractures, unable to abduct arm(lift) because the Deltoid muscle is injured thus the Axillary nerve is injured too, and a car accident could break the Scapula and can puncture a lung. Triangular Interval
Borders: Teres Major, Long-head, and Lateral Head of the Triceps Brachii

Structures: Deep Brachial Artery and Radial Nerve

Function:
-Deep Brachial Artery supplies blood to the posterior compartment of the arm
-Radial Nerve innervates posterior compartment of the arm and forearm

Clinical Significance: Unable to extend arm at the shoulder joint, and unable to extend forearm at the elbow joint Triangular Space
Borders: Teres Minor, Teres Major, and Long-head of the Triceps Brachii

Structures: Circumflex Scapular Artery

Clinical Significance: Bruising of the shoulder and general weakness Axillary Artery
Main blood supply to the upper extremities These past couple of weeks have been an awesome experience. I really enjoyed learning about my spaces and having such a great teacher that is patient and engaging to work with. I am glad I signed up for this class because it opened my mind about pursuing a career in the medical field and taking an Anatomy class in college. Even though it required a lot of research and hard work, I will remember this experience forever and am really grateful I took advantage of this great opportunity. General Definitions:
-Innervation: Nerve to muscle. Makes muscles contract and move
-Supply: Blood vessel to muscle. It gives nutrients, Oxygen, etc
-Borders: Combination of the 4 muscles. Teres Minor, Teres Major, Long-Head, and Lateral Head of the Triceps Brachii Brachial Plexus
Major innervation (nerve to muscle) of upper extremities Thank you Dr. Bareither and Michael!
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