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| thoracodorsal nerve |
Source: posterior cord of brachial plexus
Motor: latissimus dorsi |
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mcs5109 Wed, 21 Sep 2011 01:01:41 GMT |
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| greater occipital nerve |
Source: dorsal primary ramus of spinal nerve C2 (medial br.)
Motor: posterior neck muscles
Sensory: skin of the posterior scalp |
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mcs5109 Wed, 21 Sep 2011 01:01:07 GMT |
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| dorsal scapular nerve |
Source: brachial plexus (br. of C5 ventral primary ramus)
Motor: rhomboideus major and minor mm.; levator scapulae m.
Sensory: none |
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mcs5109 Wed, 21 Sep 2011 01:00:16 GMT |
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| dorsal primary ramus |
Source: first branch off of the dorsal side of the spinal nerve
Motor: to the deep back mm.; sympathetic innervation to the skin
Sensory: cutaneous to the skin of the back
Notes: a mixed nerve containing both motor and sensory fibers |
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mcs5109 Wed, 21 Sep 2011 00:58:32 GMT |
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| Accessory nerve |
motor: to trapezius
sensory: none |
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mcs5109 Wed, 21 Sep 2011 00:58:32 GMT |
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| transverse cervical artery |
Source: thyrocervical trunk
Supplies: trapezius muscle |
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mcs5109 Wed, 21 Sep 2011 00:55:23 GMT |
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| thoracodorsal artery |
Source: subscapular
Branches: muscular
Supplies: latissimus dorsi |
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mcs5109 Wed, 21 Sep 2011 00:54:42 GMT |
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| dorsal scapular artery |
Source: subclavian a.
Branches: unnamed muscular branches
Supply to: levator scapulae m., rhomboideus major m., rhomboideus minor m. |
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mcs5109 Wed, 21 Sep 2011 00:54:42 GMT |
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| nuchal ligament |
a midline ligament that extends posteriorly from the spinous processes of cervical vertebrae and extends from the base of the skull to the 7th cervical vertebra a syndesmosis; it provides muscle attachments to the cervical spinous processes without the necessity of long spinous processes that would hinder extension of the neck |
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mcs5109 Wed, 21 Sep 2011 00:48:04 GMT |
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| trapezius |
Origin: medial third of the superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of vertebrae C7-T12
Insertion: lateral third of the clavicle, medial side of the acromion and the upper crest of the scapular spine
Action: elevates and depresses the scapula (depending on which part of the muscle contracts); rotates the scapula superiorly; retracts scapula
Innervation:
motor: spinal accessory (XI), proprioception: C3-C4
Artery: transverse cervical a.
Notes: named for its shape; trapezius is an example of a muscle that migrates during development from its level of origin (cervical) to its final position, pulling its nerve and artery along behind |
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mcs5109 Wed, 21 Sep 2011 00:46:58 GMT |
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| rhomboideus minor |
Origin: inferior end of the ligamentum nuchae, spines of vertebrae C7 and T1
Insertion: medial border of the scapula at the root of the spine
Action: retracts, elevates and rotates the scapula inferiorly
Innervation: dorsal scapular nerve (C5)
Artery: dorsal scapular a |
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mcs5109 Wed, 21 Sep 2011 00:41:39 GMT |
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| rhomboid major |
Origin: spines of vertebrae T2-T5
Insertion: medial border of the scapula inferior to the spine of the scapula
Action: retracts, elevates and rotates the scapula inferiorly
Innervation: dorsal scapular nerve (C5)
Artery: dorsal scapular a. |
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mcs5109 Wed, 21 Sep 2011 00:40:01 GMT |
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| levator scapulae |
Origin: transverse processes of C1-C4 vertebrae
Insertion: medial border of the scapula from the superior angle to the spine
Action: elevates the scapula
Innervation: dorsal scapular nerve (C5); the upper part of the muscle receives branches of C3 & C4
Artery: dorsal scapular a. |
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mcs5109 Wed, 21 Sep 2011 00:38:19 GMT |
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| Latissimus dorsi |
Origin: vertebral spines from T7 to the sacrum, posterior third of the iliac crest, lower 3 or 4 ribs
Insertion: medial lip of the intertubercular groove
Action: extends and rotates the arm medially, along with adduction of the arm
Innervation: thoracodorsal nerve (C7,8) from the posterior cord of the brachial plexus
Artery: thoracodorsal a. |
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mcs5109 Wed, 21 Sep 2011 00:36:49 GMT |
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| attachments of the scapula |
see Netter 407 |
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mcs5109 Wed, 21 Sep 2011 00:30:52 GMT |
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| What are the 2 articulations of the clavicle? |
it articulates medially with the manubrium of the sternum and laterally with the acromion process of the scapula |
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mcs5109 Wed, 21 Sep 2011 00:26:00 GMT |
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| What attaches to superior nuchal line? |
trapezius and splenius muscles |
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mcs5109 Wed, 21 Sep 2011 00:22:53 GMT |
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| superior nuchal line |
-runs transversely on the external surface of the occipital bone
-sandwiches the external occipital protuberance
-attachment site for trapezius and splenius mm |
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mcs5109 Wed, 21 Sep 2011 00:22:53 GMT |
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| thoracolumbar aponeurosis (fascia) |
extends laterally from the spinous processes and forms a thin covering for the deep muscles in the thoracic region and a strong, thick covering for muscles in the lumbar region. |
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mcs5109 Wed, 21 Sep 2011 00:14:11 GMT |
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| vertebra (spina) prominens |
-seventh cervical vertebra
-has a long, non-bifid spinous process which is prominent at the nape of the neck, hence its name |
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mcs5109 Wed, 21 Sep 2011 00:14:11 GMT |
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| What inserts on the external occipital protuberance? |
ligamentum nuchae and the trapezius m. |
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mcs5109 Wed, 21 Sep 2011 00:14:11 GMT |
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| external occipital protuberance |
-a projection on the external surface of the squamous part of the occipital bone in the midline
-the attachment site of the ligamentum nuchae and the trapezius m.
-aka inion
-sandwiched by superior nuchal lines |
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mcs5109 Wed, 21 Sep 2011 00:20:59 GMT |
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