C1-4 Levator Scapula skip 2 (C5, C6) C7, T1 Rhomboid Minor T2-5 Rhomboid Major Deep Posterior Thoracoappendicular muscles

Supraspinatus Infraspinatus Teres Minor Subscapularis Scapulohumeral Muscles

Back and Shoulder Deep Flashcards by Ben Holtom

Superficial Back Muscles

Trapezius
Latissismus Dorsi
Levator Scapula
Rhomboid Major and Minor

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Intermiadiate Back Muscles

Serratus Posterior Superior and Inferior

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Deep Back Muscles

3 groups:

Erector Spinae
Transversospinal Group
Segmental Group

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4224

C1-4 Levator Scapula
skip 2 (C5, C6)
C7, T1 Rhomboid Minor
T2-5 Rhomboid Major

Deep Posterior Thoracoappendicular muscles

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Rotator Cuff Muscles

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Scapulohumeral Muscles

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Scapulohumaral Muscles

scapula –> humerus

Rotator Cuff:
Supraspinatus
Infraspinatus 
Teres Minor
Subscapularus

Others:
Teres Major
Deltoid

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Trapezius origin

Base of skull
Nuchal ligament
C7 - T12

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Trapezius insertion

Lateral third of the clavicle
Acromion
Spine of the scapula

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Trapezius action

Retraction, superior rotation, elevation and depression of the scapula

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Trapezius innervation

Spinal accessory nerve

with superior branch of transverse cervical artery
deep to latissimus dorsi
lateral to levator scapula (landmark)

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Trapezius Arterial Supply

Superior Branch of Transverse Cervical Artery

With spinal accessory nerve
Deep to latissimus dorsi
Lateral to Levator Scapula (Landmark)

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Latissimus Dorsi origin

Spinous Processes T7-T12
Thoracoacrolumbar facia
Iliac Crest

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Latissimus Dorsi insertion

Floor of the intertubercular groove humerus

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Latissimus Dorsi action

Extension, adduction, and medial rotation of the arm

- aids in resp.

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Latissimus Dorsi innervation

Thoracodorsal Nerve

rises from posterior cord of the BP
C5-T1
with thoracodorsal artery

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Latissimus Dorsi arterial supply

Thoracodorsal Artery

rises from subscapular artery
travels with thoracodorsal nerve

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Muscles forming diamond shape

Serratus Posterior Superior
Serratus Posterior Inferior

Intermediate Back Muscles

Serratus Posterior Superior origin

Spinous processes C7 - T2

Serratus Posterior Superior insertion

Upper Ribs

*inserts above its origin

Serratus Posterior Superior action

Elevation of the ribs

respiration?
proprioception?

Serratus Posterior Superior innervation

Anterior rami
(intercostal nerves)

Serratus Posterior Superior arterial supply

Posterior innercostal arteries

Serratus Posterior Inferior origin

spinous processes T11 - L3

Serratus Posterior Inferior insertion

Lower Ribs

*inserts Below its origin

Serratus Posterior Inferior action

lower the ribs - respiration? - proprioception?

Serratus Posterior Inferior innervation

Innercostal Nerves (anterior rami)

Serratus Posterior Inferior arterial supply

posterior innercostal arteries

Erector Spinae Muscles Common origin?

Iliocostalis Longissimus Spinalis Common origin: - sacrum - iliac crest - SPs of T11 - L5

Erector Spinae action

Extension + lateral flexion of vertebral column

Iliocostalis insertion

angle of the lower ribs

Longissimus insertion

ribs between tubercles and angles | transverse processes cervical and thoracic

Spinalis insertion

Spinous process cervical and thoracic

Erector Spinae Innervation

posterior rami of spinal nerves

Transversospinalis Muscles

Semispinalis (4-6) Multifidus (2-4) Rotatotes (1-2)

Transversospinalis action

extension of vertebral column lateral flexion / rotation of vertebral column stabilization of vertebral column Rotatores possible proprioception

Transversospinalis innervation

posterior rami of spinal nerves

Transversospinal origin and insertion

all transverse processes --> spinous processes

Segmental Muscle Group

Interspinales (between spinous processes - insertion above origin) Intertransverserii* (between transverse processes - insertion above origin) Levator costarum (TPs of thoracic and inserts on ribs between tubercle and angle)

Segemental Muscle Group action

extension of vertebral column lateral flexion of vertebral column levator costarum: elevation of ribs in respiration

Segemental Muscle Group innervation

posterior rami of spinal nerves *except intertransverserii (also anterior rami)***