Lab Final- origin, insertion, action, innervation muscles

What is this muscle?

trapezius

What are its proximal attachments?

medial third of superior nuchal line, external occipital protuberance, nuchal ligament, spinous process of C2-T12

distal attachments?

lateral third of clavicle, acromion, spine of scapula

Actions?

elevates, depresses, retracts, rotate glenoid cavity superiorily

Innveration?

spinal accessory nerve C3-C4

Name?

latissimus dorsi

proximal attachment?

spinous process T6-T12, thoracolumbar fascia, iliac crest, inferior 3-4 ribs

distal attachment?

floor of bicipital grove of humerus

actions?

extend, adducts and medially rotates humerus, raises body towards arm while climbing

nerve?

thoracodorsal nerve C6-C8

name?

rhomboid major

proximal attachments?

spinous processes of T2-T5

distal attachments?

medial border of scapula from level of spine to inferior angle

actions?

retract scapula, rotate glenoid cavity inferiorly, fix scapula to thoracic wall

innervation?

dorsal scapular nerve C4-C5

name?

rhomboid minor

proximal attachment?

nuchal ligament, spinous process of C7-T1

distal attachemnt?

smooth triangular area at medial end of scapular spine

actions?

retract scapula, rotate glenoid cavity inferiorly, fix scapula to thoracic wall

ligament name?

anterior longitudinal ligament

ligament name?

posterior longitudinal ligament

yellow ligament name?

supraspinous ligament

green ligament name?

interspinous ligament

blue ligament name?

ligamentum flavum

ligament name?

nuchal ligament

ligament name?

alar ligament

ligament name?

apical ligament

ligament name?

cruciate ligament

ligament name?

transverse ligament of atlas

name?

trapezius

proximal attachment?

medial third of superior nuchal line, eop, nuchal ligament, C7-T12 spinous process

distal attachment?

lateral third of clavicle, acromion, spine of scapula

innervation?

spinal accessory nerve C3-C4

actions?

elevate, depress, and retract scapula, rotate the glenoid cavity superiorly

name?

rhomboid major

proximal attachment?

T2-T5 spinous process

distal attachment?

medial border of scapula from level of spine to inferior angle

innervation?

dorsal scapular nerve C4-C5

action?

retract, rotate glenoid cavity inferiorly, fix scapula to thoracic wall

name?

rhomboid minor

proximal attachment?

C7-T1 spinous process and nuchal ligament

distal attachment?

smooth triangular area at medial end of scapular spine

innervation?

dorsal scapular nerve C4-C5

actions?

retract, rotate glenoid cavity inferiorly, fix scapula to thoracic wall

name?

supraspinatus

proximal attachment?

supraspinous fossa

distal attachment?

superior facet of greater tubercle of humerus

innervation?

suprascapular nerve C4-C6

action?

initiates and assists deltoids in abduction of the arm, works with other SITS muscles

name?

infraspinatus

proximal attachment?

infraspinous fossa

distal attachment?

middle facet of greater tubercle of humerus

innervation?

suprascapular nerve C5-C6

actions?

laterally rotates arm, works with other SITS muscles

name?

teres minor

proximal attachment?

middle part of lateral border of scapula

distal attachment?

inferior facet of greater tubercle of humerus

innervation?

axillary nerve C5-C6

actions?

laterally rotates arm, works with other SITS muscles

name?

teres major

proximal attachment?

posterior surface of inferior angle of scapula

distal attachment?

medial lip of bicipital grove

innervation?

lower subscapular nerve C5-C6

actions?

adducts and medially rotates arm

name?

pectoralis major sternocostal head

name?

pectoralis major clavicular head

proximal attachment?

anterior surface of medial half of clavicle, and sternum, superior six costal cartilages, aponeurosis of external oblique muscle

distal attachment?

lateral lip of bicipital grove

innervation?

lateral and medial pectoral nerves C5-T1

action?

adducts, flexes, extends, and medially rotates humerus, draws scapular anterior and inferior

name?

pectoralis minor

proximal attachment?

3-5th ribs near costal cartilage

distal attachment?

medial border and superior surface of coracoid of scapula

innervation?

medial pectoral nerve C8-T1

action?

stabilizes scapula, draws it inferior and anterior against thoracic wall

name?

serratus anterior

proximal attachment?

external surface of lateral parts of ribs 1-8

distal attachment?

anterior surface of medial borders of scapula

innervation?

long thoracic nerve C5-C7

actions?

protracts and rotates scapula, fixes it against thoracic wall

name?

deltoids

proximal attachment?

lateral third of clavicle, acromion, spine of scapula

distal attachment?

deltoid tuberosity of humerus

innervation?

axillary nerve C5-C6

action?

flexes, medially rotates, abducts, extend, laterally rotates arm

name?

subscapularis

proximal attachment?

subscapular fossa

distal attachment?

lesser tubercle of humerus

innervation?

upper and lower subscapular nerves C5-C7

actions?

medially rotates arms, holds head of humerus to glenoid cavity, works with other SITS muscles

name?

bicep brachii

name?

bicep brachii short head

name?

bicep brachii long head

proximal attachment?

tip of coracoid process

proximal attachment?

supraglenoid tubercle

distal attachment?

tuberosity of radius, fascia of forearm via bicipital aponeurosis

innervation?

musculocutaneous nerve C5-C7

actions?

supinates and flexes forearm, SH resists shoulder dislocation

name?

brachialis

proximal attachment?

distal half of anterior surface of humerus