HAP II UNIT 2 Lab 1 Posterior neck, back, shoulder muscles, gluteal area

deltoid muscle

Shoulder abduction (note that supraspinatus M. initiates abduction to 15 degrees and deltoid completes it from 15 to 90 degrees) innervated by axillary nerve

axillary nerve

trapezius muscle

elevates and depresses the scapula, innervated by Spinal accessory nerve

splenius capitis

rhomboid major muscle

retracts, elevates the scapula

rhomboid minor muscle

retracts, elevates the scapula

levator scapulae muscle

retracts, elevate the scapula

latissimus dorsi muscle

adduction, extension, medial rotation of the shoulder

teres major muscle

Rotator cuff muscles:

-teres minor muscle

-infraspinatus muscle

-supraspinatus muscle

-subscapularis muscle

teres minor muscle

rotates shoulder laterally (or externally)

infraspinatus muscle

rotates shoulder laterally (or externally)

supraspinatus muscle

initiates abduction of the shoulder (from 0 to 15 degrees)

subscapularis muscle

rotates shoulder medially (or internally

serratus anterior

external intercostal

Erector spinae group:

-spinalis muscle

-longissimus muscle

-iliocostalis muscle

spinalis muscle

extends and laterally bends the trunk, neck and head

longissimus muscle

extends and laterally bends the trunk, neck and head

iliocostalis muscle

extends and laterally bends the trunk, neck and head

Gluteal area:

-gluteus maximus muscle

-gluteus medius muscle

-gluteus minimus muscle

gluteus maximus muscle

hip extension- innervated by inferior gluteal nerve

gluteus medius muscle

gluteus minimus muscle

piriformis muscle

quadratus femoris

sciatic nerve: common fibular and tibial nerves

thoracolumbar fascia