Back Anatomy Flashcards
Attachments of Trapezius

Proximal: nuchal ligament
Distal: Lateral 1/3 clavicle
Actions of Trapezius
Elevates, depresses & retracts scapula
Innervations of Trapezius
Accessory nerve (CN XI)
Attachments of Latissimus Dorsi

Proximal: Illiac crest
Distal: Intertubercular sulcus of humerus
What are the actions of the Latissimus dorsi
Adducts, extends & medially rotates humerus
What are the innervations of the latissimus dorsi
Thoracodorsal nerve

What are the attachments of the Rhomboids major

Proximal: Thoracic spinous processes
Distal: medial border scapula
What are the actions of the rhomboids major?
Retracts scapula
What are the innervations of the rhomboids major?
Dorsal scapular nerve
What are the attachments of the Rhomboids minor?

Proximal: Nuchal ligament. Distal: medial border scapula
What are the innervations of the Rhomboids minor
Dorsal scapular nerve
What are the actions of the Rhomboids minor
retracts scapula
What are the attachments of the Levator scapulae?

Proximal: Cervical transverse processes
Distal: Superior angle of scapula
What are the actions of the levetator scapulae?
Elevates scapula
What are the innervations of the Levetator scapulae?
Dorsal scapular nerve
What are the actions of the Serratus posterior superior

respiration (minor role)
What are the innervations of the Serratus posterior superior?
Ventral rami
Whats the action of the Serratus posterior inferior?

Respiration (minor role)
What are the innervations of the Serratus posterior inferior?
Ventral rami
What are the actions of the Iliocostalis, Longissimus, Spinalis (Erector Spinae)

Bilateral: Extends vertebral column and head
Unilateral: Lateral flexion to same side
What are the innervations of the Erector Spinae?
Dorsal rami
What are the actions of the Semispinalis capitis?

Bilateral: Extends head
Unilateral: Rotates head to opposite side
What are innervations of the Semispinalis capitis
dorsal rami
Actions of Splenius capitis
Bilateral: Extends head
Unilateral: Laterally flex neck and rotate head to same side.
Inervations of Splenius capitus?
Dorsal rami
Actions of Rectus capitus major and minor

Extends head
Innervations of Rectus capitus major and minor
Suboccipital nerve
Actions of

Obliquus capitis inf
Moves head sise to side
Inervation of Obliquues capitis inferior
Suboccipital nerve
Actions of Obliquus capitis sup

Extends head
Innervations of Obliquues capitis superior
Suboccipital nerve