Second Order Unit 1 Lab

Trapezius M action

retracts scapula, depress scapula, elevate and superiorly rotate scapula

Trapezius M innervation

accessory nerve

Latissimus dorsi M action

agonist of arm extension, adducts and medially rotates arm

Latissimus dorsi M innervation

Thoracodorsal nerve

Rhomboid major M action

elevates and retracts scapula, inferiorly rotates scapula

Rhomboid major M innervation

dorsal scapular nerve

Teres minor M action

adducts and laterally rotates arm, adducts and laterally rotates arm

Teres minor M innervation

axillary nerve

Supraspinatus M action

abducts arm

Supraspinatus M innervation

suprascapular nerve

Serratus anterior M action

stabilizes scapula, agonist in scapula protraction, superiorly rotates scapula

Serratus anterior M innervation

long thoratic nerve

Subscapularis M action

medially rotates arm

Subscapularis M innervation

upper and lower subscapular nerves

Splenius capitas M action

extends head and neck, turns head to same side

Splenius capitas M innervation

cervical spinal nerves

Gluteus maximus M action

extends thigh, laterally rotates thigh

Gluteus maximus M innervation

inferior gluteal nerve

Gluteus medius M action

abducts thigh, medially rotates thigh

Gluteus medius M innervation

superior gluteal nerve

Trapezius attachments

origin: occipital bone, ligamentum nuchae, cervical thoracic vertebrae

insertion: clavicle, scapula

Latissimus dorsi attachments

origin: thoracic vertebrae, ribs, os coxae, thoracolumbar fascia

insertion: humerus

Rhomboid major attachments

origin: thoracic vertebrae

insertion: scapula

Teres minor attachments

origin: scapula

insertion: humerus

Supraspinatus attachments

origin: scapula

insertion: humerus

Serratus anterior attachments

origin: ribs

insertion: scapula

Subscapularis attachments

origin: scapula

insertion: humerus

Splenius capitis attachments

origin: ligamentum nuchae

insertion: occipital bone, temporal bone

Gluteus maximus attachments

origin: os coxae, sacrum, coccyx

insertion: iliotibial tract of fascia late, femur

Gluteus medius attachments

origin: os coxae

insertion: femur