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Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th...

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Gross Anatomy 2: Superficial Back Kulesza
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Page 1: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Gross Anatomy 2:Superficial Back

Kulesza

Page 2: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Readings:Snell, Clinical Anatomy by Regions (8th edition)• The Superficial Part of the Back and the Scapular

Region: p. 454 –458; table 9-2• Page 63; table 2-1 [serratus posterior muscles]

Objectives:1. Identify the superficial landmarks associated with the

back.2. Describe the structure, function and support of the

superficial muscles of the back (arterial supply, venous drainage and innervation).

3. Identify the borders and functional significance of the triangle of auscultation and the lumbar triangle.

Page 3: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Superficial Landmarks

• Median Vertebral Furrow• Erector Spinae• External occipital protuberance• Spinous Processes, vertebra

prominens (C7)• Cervical border of trapezius• Acromion• Deltoid• Scapula and its spine• Posterior axillary fold• Iliac crest

Page 4: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Dermatomes

Page 5: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Sternoclavicular and Scapulothoracic

Articulations

Page 6: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

An 18-year-old male presents following a mountain biking accident. History reveals he was thrown from the bike and landed on the side of his head (he was wearing a helmet). Physical exam reveals a fracture clavicle.

On a follow-up visit, the fracture has healed but he has weakness in shrugging his shoulder and in retracting the scapula. Physical exam reveals atrophy of the trapezius.

What nerve was most likely damaged in the accident? ---Spinal accessory nerve

Page 7: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Trapezius

Proximal attachment: superior nuccal ligament

Distal attachment:

Action:

Innervation: CN XI (& contributions from CN’s II, III, IV)

Latissimus Dorsi

Proximal attachment:

Distal attachment:

Action:

Innervation:

Page 8: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Trapezius & Latissimus Dorsi

Page 9: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Trapezius & Latissimus Dorsi

Page 10: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Innervation of the Trapezius

Page 11: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Innervation of the Trapezius

Page 12: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

2nd Layer of Superficial Back Muscles

Page 13: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Levator Scapulae

Proximal attachment:

Distal attachment:

Action:

Innervation:

Rhomboids

Proximal attachment:

Distal attachment:

Action:

Innervation:

Page 14: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Superficial Back Triangles

Triangle of Auscultation:

Lumbar Triangle:

• Inferior Lumbar Hernia (Petit’s Hernia)

Superior Lumbar Hernia (Grynfeltt’s Hernia)

Page 15: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Intermediate Back Muscles*respiratory muscles*Serratus Posterior Superior:Proximal attachment:

Distal attachment:

Action:

Innervation:

Serratus Posterior Inferior:Proximal attachment:

Distal attachment:

Action:

Innervation:

Page 16: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Common Variations of the Transverse/Superficial Cervical Artery

Page 17: Gross Anatomy 2: Superficial Back Kulesza. Readings: Snell, Clinical Anatomy by Regions (8 th edition) The Superficial Part of the Back and the Scapular.

Common Variations of the Transverse/Superficial Cervical Artery


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