Muscles of the BACK

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Muscles of the BACK by Mind Map: Muscles of the BACK

1. Extrinsic Muscles

1.1. superficial

1.1.1. Latissimus Dorsi

1.1.1.1. Irregular

1.1.1.2. Thoracodorsal (C6,7,8)

1.1.1.2.1. Brachial Plexus

1.1.1.3. Thoracodorsal

1.1.1.3.1. subscapular

1.1.1.4. Thoracolumbar Fascia, Spinous Process TV6 to LV5, Illiac Crest

1.1.1.5. Interbubercular Groove Humerous

1.1.1.6. extends, adducts, and medially rotates humerus

1.1.2. Trapezius

1.1.2.1. Irregular

1.1.2.2. CN XI (motor) C3&C4 (Sensory)

1.1.2.3. Superficial Branch of the Transverse Cervical artery

1.1.2.4. Spinous Process CV7 to T12, Occipital protuberance, superior nucheal line.

1.1.2.5. Spine of the scapula, lateral 3rd of the clavical, and acromium

1.1.2.6. elevates scapula and depresses glenoid fossa, retracts scapula, and depresses and rotates scapula

1.1.3. Rhomboidus

1.1.3.1. Major

1.1.3.1.1. Dorsal Scapular (C5)

1.1.3.1.2. Transverse Cervical (deep branch)

1.1.3.1.3. TV2 to TV5

1.1.3.1.4. Medial aspect of scapula below spine

1.1.3.1.5. Retracts and rotates Scapula, Depresses Glenoid Fossa

1.1.3.2. Minor

1.1.3.2.1. Dorsal Scapular (C5)

1.1.3.2.2. Transverse Cervical (deep branch)

1.1.3.2.3. spinous process CV7 and TV1

1.1.3.2.4. Medial aspect of scapula at level and above spine

1.1.3.2.5. Retracts and Rotates Scapula, Depresses Glenoid Fossa

1.1.4. Levator Scapulae

1.1.4.1. Dorsal Scapular, C3,C4

1.1.4.2. Transverse Cervical (deep branch)

1.1.4.3. Transverse Process CV1,2,3,4 and sometimes 5

1.1.4.4. Medial aspect of the scapula above the spine

1.1.4.5. elevates scapula

1.2. Intermediate

1.2.1. Serratus Posterior Superior

1.2.1.1. Intercostal Nerves (segmented CV 2,3,4,5)

1.2.1.2. Branches of Intercostal arteries

1.2.1.3. Spinous ProcessCV7,TV1,TV2, and TV3

1.2.1.4. Ribs 2,3, and 4

1.2.1.5. Aid w/ inspiration (elevate ribs)

1.2.2. Serratus Posterior Inferior

1.2.2.1. Intercostal (segmented TV9, 10, 11 12)

1.2.2.2. Branches of Intercostal Arteries

1.2.2.3. Spinous Process TV11, TV12, LV1, and LV2

1.2.2.4. Ribs 8, 9, 10, 11, and 12

1.2.2.5. Aid with expiration

2. Intrinsic Muscles

2.1. Superficial

2.1.1. Splenius X2

2.1.1.1. Splenius Cericis

2.1.1.1.1. T3, T4, T5, T6

2.1.1.1.2. C1, C2, C3

2.1.1.2. Splenius Capitis

2.1.1.2.1. C7, T1, T2, T3

2.1.1.2.2. Mastoid Process and occipital Bone

2.1.1.3. Dosal Rami of Cervical

2.1.1.4. Branch of Intercostals

2.2. Intermediate

2.2.1. Erector Spinae

2.2.1.1. Spinalis

2.2.1.1.1. Spin. Proc. of Lumbar and infer. Thoracic regions

2.2.1.1.2. Spin. Proc. of superior vertebral levels

2.2.1.2. Longissimus

2.2.1.2.1. Transverse Process

2.2.1.2.2. Transverse Process of superior vertebrae

2.2.1.3. Iliocostalis

2.2.1.3.1. Illiac Crest and transverse process

2.2.1.3.2. ribs of superior vertebra

2.2.1.4. Dorsal Rami of Thoracic and spinal nerve

2.3. Deep