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Proximal (origin) attachment for Trapezius Innervation of Trapezius Contraction of ascending part of trapezius (action) Contraction of entire Trapezius.

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Presentation on theme: "Proximal (origin) attachment for Trapezius Innervation of Trapezius Contraction of ascending part of trapezius (action) Contraction of entire Trapezius."— Presentation transcript:

1 Proximal (origin) attachment for Trapezius Innervation of Trapezius Contraction of ascending part of trapezius (action) Contraction of entire Trapezius (action) Superior nuchal line External occipital protuberance Ligamentum nuchae Spinous process of C7-T12 vertebrae Motor – spinal accessory (CNXI) C3 and C4 – pain and proprioceptive fibers Depresses scapula Retracts scapula 1

2 Lateral 3 rd of clavicle Acromion Spine of scapula Elevates scapula Retracts scapula Rotates glenoid cavity superiorly Distal (insertion) attachment for Trapezius Contraction of descending part of trapezius (action) Contraction of middle part of trapezius (action) Contraction of descending and ascending part of Trapezius (action) 2

3 Proximal attachment (origin) for Latissimus dorsi Innervation of Latissimus dorsi Action of Latissimus Dorsi Spinous process of T6-T12 Thoracolumbar fascia Iliac crest Inferior 3 or 4 ribs Floor of intertubercular sulcus of humerus. Thoracodorsal nerve (C6, C7, C8) Extends, adducts and medially rotates humerus Raises body towards arms when climbing Distal attachment (insertion) for Latissimus dorsi 3

4 Proximal attachment (origin) for Rhomboid minor Innervation of Rhomboid major and rhomboid minor Action of rhomboid major and minor Ligamentum nuchae Spinous processes of C7 and T1 Dorsal scapular n. (C4-C5) Retraction and downward rotation of scapula Secure scapula to thoracic wall (in conjunction with serratus anterior) Distal attachment (insertion) for Rhomboid minor Vertebral border of scapula from root of spine 4

5 Proximal attachment (origin) for Rhomboid major Spinous processes of T2- T5 Distal attachment (insertion) for Rhomboid major Vertebral border of scapula from root of spine 5

6 Proximal attachment (origin) for Levator scapulae Innervation of levator scapulae Action of levator scapulae Transverse processes of upper C1-C4 Dorsal scapular n. (C4-C5) Assist rhomboids Elevation of scapula Distal attachment (insertion) for Levator scapulae Vertebral border of scapula from superior angle to root of spine 6

7 Proximal attachment (origin) for Serratus posterior superior Innervation of serratus posterior superior and inferior Spinous processes (of C7- T3) Inter costal nerves Assists in inspiration Distal attachment (insertion) for Serratus posterior superior To ribs (superior border of ribs 2-4) Action of serratus posterior superior 7

8 Proximal attachment (origin) for Serratus posterior inferior Innervation of serratus posterior superior and inferior Spinous processes of lower vertebrae (T11-L2) Inter costal nerves Assists in expiration Distal attachment (insertion) for Serratus posterior inferior Loswer ribs (Inferior border of ribs 8-11) Action of serratus posterior inferior 8

9 Proximal attachment (origin) for Splenius Capitis and Cervicis Innervation of Splenius Capitis and Cervicis Action of Splenius Capitis Nuchal ligament Spinous processes of C7- T3 vertebrae Mastoid process Lateral third of superior nuchal line of occipital bone. Posterior rami of spinal nerves extension of head (both sides); ipsilateral rotation of head and neck Distal attachment (insertion) for Splenius Capitis and Cervicis Capitis: Tubercles of transverse processes of C1-C3 or C4 vertebrae Cervicis: Capitis: Cervicis: Nuchal ligament Spinous processes of T3- T6 vertebrae 9

10 What are the erector spinae muscles (lateral to medial) Distal attachment (insertion) for erector spinae Iliocostalis, longissimus, spinalis Iliocostalis – ribs Longissimus – transverse process and eventually mastoid process Spinalis – spanning spinous processes of vertebrae on each side Both sides - Extension of vertebral column One side – ipsilateral rotation Proximal attachment (origin) for erector spinae Arise from common inferior tendon that extends from the iliac crest to median sacral crest Contraction of erector spinae (both sides or one side) 10

11 Innervation of erector spinae What are the proximal and distal attachments of transversospinalis Posterior primary rami of spinal nerves What are the transversospinalis muscles Semispinalis capitis, cervcis and thoracis Multifidis Rotatores Contraction of transversospinalis 11 Proximal – lower transverse process Distal – higher transverse process. Semispinalis – important in holding up head Multifidis – stabilize vertebrae Rotatores - stabilize vertebrae

12 Proximal attachment (origin) for rectus capitis posterior minor Innervation of rectus capitis posterior minor Below medial end of inferior nuchal line. Suboccipital n. Stabilizes atlanto-occipital joint Distal attachment (insertion) for rectus capitis posterior minor Posterior tubercle of atlas Action of rectus capitis posterior minor 12

13 Proximal attachment (origin) for rectus capitis posterior major Innervation of rectus capitis posterior major Below inferior nuchal line, lateral to rectus capitis posterior minor Suboccipital n. Extend head Rotate atlas and head to same side Distal attachment (insertion) for rectus capitis posterior major Spine of axis Action of rectus capitis posterior major 13

14 Proximal attachment (origin) for obliquus capitis superior Innervation of obliquus capitis superior Transverse process of atlas Suboccipital n. Extends head Distal attachment (insertion) for obliquus capitis superior Inferior nuchal line (lateral to rectus capitis major) Action of obliquus capitis superior 14

15 Proximal attachment (origin) for obliquus capitis inferior Innervation of obliquus capitis inferior Spinous process of axis Suboccipital n. Rotates atlas and head to same side Distal attachment (insertion) for obliquus capitis inferior Transverse process of atlas Action of obliquus capitis inferior 15

16 Proximal attachment (origin) for Deltoid Innervation of Deltoid Clavicle, Scapular spine Acromion Axillary n. Abduction of arm (middle part; w/ supraspinatus) Flexion and medial rotation of humerus (anterior part) Extension and lateral rotation of humerus (posterior part) Distal attachment (insertion) for Deltoid Deltoid tuberosity Action of Deltoid

17 Proximal attachment (origin) for Supraspinatus Innervation of Supraspinatus Supraspinous fossa Suprascapular n. Abducts humerus Distal attachment (insertion) for Supraspinatus Greater tubercle of humerus Action of Supraspinatus

18 Proximal attachment (origin) for Infraspinatus Innervation of Infraspinatus Infraspinous fossa Suprascapular n. Laterally rotates humerus Distal attachment (insertion) for Infraspinatus Greater tubercle of humerus Action of Infraspinatus

19 Proximal attachment (origin) for Teres minor Innervation of Teres minor Axillary border of scapula Axillary n. Laterally rotates humerus Distal attachment (insertion) for Teres minor Greater tubercle of humerus Action of Teres minor

20 Proximal attachment (origin) for Subscapularis Innervation of Subscapularis Subscapular fossa Upper subscapular n. Lower subscapular n. Adducts and medially rotates humerus Distal attachment (insertion) for Subscapularis Lesser tubercle of humerus Action of Subscapularis

21 Proximal attachment (origin) for Teres major Innervation of Teres major Axillary border of scapula Lower subscapular n. Secures humerus at shoulder Adducts and medially rotates humerus Distal attachment (insertion) for Teres major Medial edge of intertubercular sulcus Action of Teres major

22 Location of Platysma Innervation of Platsyma Superficial fascia of anterior and posterior cervical triangle Facial n.

23 Proximal attachment (origin) for Sternocleidomastoid Innervation of Sternocleidomastoid Sternum Medial end of clavicle Spinal accessory n. Flexion of head Ipsilateral flexion, Contralateral rotation Distal attachment (insertion) for Sternocleidomastoid Mastoid process of temporal bone Action of Sternocleidomastoid

24 Proximal attachment (origin) for Omohyoid Innervation of Omohyoid Superior border of scapula Intermediate tendon Clavicle Ansa cervicalis Depression of hyoid bone Aid in swallowing Distal attachment (insertion) for Omohyoid Hyoid Action of Omohyoid

25 Proximal attachment (origin) for Scalenus anterior, medius, and posterior Innervation of Scalenus anterior, medius, and posterior Transverse process of cervical vertebrae Anterior primary rami of cervical nn. Accessory respitory Flexor of neck Contralateral rotator of neck Distal attachment (insertion) for Scalenus anterior, medius, and posterior First and second rib Action of Scalenus anterior, medius, and posterior

26 Innervations of thoracodorsal nerve Latissimus dorsi Rhomboid major Rhomboid minor Levator scapulae Innervations of dorsal scapular nerve Innervations of spinal accessory nerve Trapezius Sternocleidomastoid Innervation of suboccipital nerve Rectus capitis posterior major Rectus capitis posterior minor Obliquus capitis superior Obliquus capitis inferior 26

27 Innervations of greater occipital nerve Posterior surface of scalp (cutaneous) Innervations of axillary nerve Deltoid Teres minor Triceps brachi, long head Innervations of suprascapular nerve Supraspinatus Infraspinatus Innervations of upper subscapular nerve Subscapularis

28 Innervations of lower subscapular nerve Subscapularis Teres major Innervations of greater auricular nerve Innervations of transverse cervical nerve Innervations of supraclavicular nerve Skin around ear (cutaneous) Skin of anterior neck (cutaneous) Skin inferior to clavicle (cutaneous)

29 Scalp behind ear (cutaneous) Innervations of lesser occipital nerve Innervations of ansa cervicalis Omohyoid Sternohyoid Sternothyroid Diaphragm Innervations of phrenic nerve

30 Spinal roots of thoracodorsal nerve C6, C7, C8 C4-C5 Spinal roots of dorsal scapular nerve Spinal roots of suboccipital n. Spinal roots of greater occipital n. C1 (motor only) C2 30

31 Spinal roots of axillary nerve C5, C6 31 Spinal roots of suprascapular nerve C4, C5, C6 Spinal roots of upper subscapular nerve C5, C6, C7 Spinal roots of lower subscapular nerve C5, C6, C7

32 Spinal roots of lesser occipital nerve C2 32 Spinal roots of greater auricular nerve C2, C3 Spinal roots of transverse cervical nerve C2, C3 Spinal roots of supraclavicular nerve C3, C4


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