Human Anatomy

Medial Third Nuchal line, External Occipital Protuberance, Nuchal Ligament (On the spinous processes from External Occipital Protuberance to C7)

Lateral third of clavicle

Spinal Accessory Nerve (CN XI) for motor. C3, C4 spinal nerves for pain and procioceptive fibers

Elevates scapula. When combined with Ascending Part, rotates glenoid cavity superiorly

Spinous Processes C7-T12

Spine of the Scapula

Spinal Accessory Nerve (CN XI) for motor. C3, C4 spinal nerves for pain and procioceptive fibers

Depresses scapula. When combined with Descending Part, rotates glenoid cavity superiorly

Spinous Processes C7-T12

Acromion

Spinal Accessory Nerve (CN XI) for motor. C3, C4 spinal nerves for pain and procioceptive fibers

Retracts Scapula

Spinous processes of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, and inferior 3 or 4 ribs

Floor of intertubercular sulcus of humerus

Thoracodorsal nerve (C6, C7, C8)

Extends, adducts, and medially rotates humerus. Raises body toward arms during climbing.

Nuchal Ligamnet, Spinous processes of C7 and T1

Smooth triangular area at medial end of scapular spine

Dorsal Scapular nerve (C4, C5)

Retracts scapula and rotates it to depress gleniod cavity. Fix scapula to thoracic wall.

Spinous processes of T2-T5 vertebrae

To inferior angle of scapula at level of spine

Dorsal Scapular nerve (C4, C5)

Retracts scapula and rotates it to depress gleniod cavity. Fix scapula to thoracic wall.

Posterior Tubercles of transverse processes 0f C1-C4 vertebrae

Medial border of scapula superior to root of scapular spine (superior angle)

Dorsal Scapular (C5) and cervical (C3, C4) nerves

Elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula

Lateral third of the clavicle

Deltoid tuberosity of the humerus

Axillary Nerve (C5, C6)

Flexes and medially rotates arm

Acromion

Deltoid tuberosity of the humerus

Axillary Nerve (C5, C6)

Abducts arm

Spine of scapula

Deltoid tuberosity of the humerus

Axillary Nerve (C5, C6)

Extends and laterally rotates arm

Supraspinous fossa of scapula

Superior facet of greater tubercle of humerus

Suprascapular nerve (C4, C5, C6)

Abduction. Rotator Cuff Muscle

Infraspinous fossa of scapula

Middle facet of greater tubercle of humerus

Suprascapular nerve (C5, C6)

Laterally rotates arm. Rotator Cuff Muscle

Middle part of lateral border of scapula

Inferior facet of greater tubercle of humerus

Axillary Nerve (C5, C6)

Laterally rotates arm. Rotator Cuff Muscle

Posterior surface of inferior angle of scapula

Medial lip of intertubercular sulcus of humerus

Lower subscapular nerve (C5, C6)

Adducts and medially rotates arm

Subscapular fossa (Most of anterior surface of scapula)

Lesser tubercle of humerus

Upper and lower subscapular nerves (C5, C6, C7)

Medially rotates arm. Rotator Cuff Muscle

Nuchal Ligament and spinous processes of C7-T3/T4 vertebrae

Fibers run superolaterally to mastoid process and lateral 3rd of superior nuchal line

Posterior rami of spinal nerves

Alone: Lateral flex neck and rotate head to side. Together: Extend head and neck

Nuchal Ligament and spinous processes of C7-T3/T4 vertebrae

Tubercle of transverse processes of C1-C3/C4 vertebrae

Posterior rami of spinal nerves

Alone: Lateral flex neck and rotate head to side. Together: Extend head and neck

Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament

Lumborum, thoracis, cervicis. Fibers run superiorly to angles of lower rins and cervicle transverse processes

Posterior rami of spinal nerves

Bilaterally: Extend vertebral column and head; as back is flexed, control movement via eccentric contraction. Unilaterally: Laterally flex vertebral column

Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament

Thoracis, cervicis, capitis. Fibers run superiorly to ribs between tubercles and angles to transverse processes in thoracis and cervical regions, and to mastoid process

Posterior rami of spinal nerves

Bilaterally: Extend vertebral column and head; as back is flexed, control movement via eccentric contraction. Unilaterally: Laterally flex vertebral column

Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament

Thoracis, cervicis, capitis. Fibers run superiorly to spinous processes in the upper thoracic regions and to cranium

Posterior rami of spinal nerves

Bilaterally: Extend vertebral column and head; as back is flexed, control movement via eccentric contraction. Unilaterally: Laterally flex vertebral column

Transverse processes of C4-T12 vertebrae

Thoracis, cervicis, capitis. Occipital bone and spinous processes in thoracis and cervical regions, spanning 4-6 segments

Posterior rami of spinal nerves

Extension. Extends head and thoracic and cervical regions of vertebral column and rotates contralaterally

Posterior sacrum, posterior iliac spine, aponeurosis of erector spinae, sacroiliac ligaments, mammillary processes of lumbar vertebrae, transverse processes of T1-T3, articular processes of C4-C7

Fibes pass entire length of spinous processes, located 2-4 segments superior to proximal attachment

Posterior rami of spinal nerves

Extension. Stabilizes vertebrae during local movements of vertebral column

Transverse processes of vertebrae, developed best in thoracic region

Junction of lamina and transverse process or spinous process of vertebra immediately (brevis) or 2 segments (longus) superior to vertebra of attachment

Posterior rami of spinal nerves

Extension. Stabilize vertebrae and assist with local extension and rotary movements of vertebral column. May function as organs of proprioception

Spinous process of vertebra C2

Lateral part of inferior nuchal line of occipital bone

Suboccipital nerve (C1)

Extension and rotation of head

Posterior tubercle of posterior arch of C1

Medial part of inferior nuchal line

Suboccipital nerve (C1)

Extension of Head

Posterior tubercle of posterior arch of C2

Transvers process of verteba C1

Suboccipital nerve (C1)

Rotation of head

Transverse process of vertebra C1

Occipital bone between superior and inferior nuchal lines

Suboccipital nerve (C1)

Extension of head