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Trail Guide To The Body Muscles: Complete Study Set
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Trail Guide To The Body Muscles: Complete Study Set
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Trail Guide To The Body Muscles: Complete Study SetDeltoid Right Ans - A: all fibers: abduct the shoulder (G/H joint)
anterior fibers: flex the shoulder, medially rotate, and horizontally adduct the
shoulder(G/H joint)
posterior fibers: extend, laterally rotate, and horizontally abduct the shoulder
(G/H joint)
O: lateral 1/3 of clavicle, acromion, and spine of scapula
I: deltoid tuberosity
N: axillary C5,C6
Trapezius Right Ans - A: Upper fibers: bilaterally extend head and neck;
unilaterally will laterally flex the neck and head to same side, rotate head to
opposite side, elevate scapula, and upwardly rotate scapula
Middle fibers: adduct and stabilize scapula
Lower fibers: depress and upwardly rotate the scapula
O: external occipital protuberance, medial portion of the superior nuchal line
or occiput, ligamentum nuchae, and spinous process of C7-T12
I: lateral 1/3 of clavicle, acromion, and spine of scap
N: spinal portion of cranial nerve XI (accessory) and ventral ramus C2-4
Latissimus Dorsi Right Ans - A: extend, adduct and medially rotate the
shoulder (G/H joint)
O: inferior angle of scapula, spinous processes of last 6 thoracic vert, last 3 or
4 ribs, thoracolumbar aponeurosis and posterior iliac crest
I: intertubercular groove of humerus
N: thoracodorsal: C6-C8
Teres major Right Ans - A: extend, adduct and medially rotate shoulder
(G/H joint)
O: inferior angle and lower 1/3 of lateral border of scapula
I: crest of lesser tubercle of humerus
N: lower subscapular C5-C7
Supraspinatus Right Ans - A: abduct shoulder and stabilize head of
humerus in glenoid cavity (G/H joint)
O: supraspinous fossa of scapula
I: greater tubercle of humerus
N: suprascapular C4-C6
,Infraspinatus Right Ans - A: laterally rotate and adduct shoulder and
stabilize head of humerus in glenoid cavity
O: infraspinous fossa of scapula
I: greater tubercle of humerus
O: suprascapular C4-C6
Teres minor Right Ans - A: laterally rotate and adduct shoulder and
stabilize head of humerus in glenoid cavity
O: upper 2/3 of the lateral border of scapula
I: greater tubercle of humerus
N: axillary C5-C6
Subscapularis Right Ans - A: medially rotate shoulder and stabilize head of
humerus in glenoid cavity
O: subscapular fossa of scap
I: lesser tubercle of humerus
N: upper and lower subscapular C5-C7
Rhomboid major Right Ans - A: adduct, elevate, and downwardly rotate
scapula
O: spinous processes of T2-T5
I: medial border of scapula b/n spine of scapula and inferior angle
N: dorsal scapular: C4-5
Rhomboid minor Right Ans - A: adduct, elevate, and downwardly rotate
scapula
O: spinous processes of C7-T1
I: upper portion of medial border of scapula across from spine of scapular
N: dorsal scapular C4-C5
Erector Spinae Group Right Ans - A: unilaterally flex the vert column to the
same side and bilaterally extend the vertebral column
O: common tendon that attaches to the posterior surface of sacrum, iliac crest,
spinous processes of lumbar and last two thoracic vertebrae
I: various attachments at the posterior ribs, spinous processes and transverse
processes of thoracic and cervical vertebrae, mastoid process of temporal
bone
N: spinal nerve
, Serratus Posterior Superior Right Ans - A: elevate the ribs during
inspiration
O: SP of C7-T3
I: Posterior surface of 2-5 ribs
N: T1-4
Spinalis Cervicis Right Ans - A: unilaterally flex vertebral column to same
side and bilaterally extend
O: ligamentum nuchae and SP of C7
I: SP of cervical vertebrae except C1
N: spinal
Spinalis Thoracis Right Ans - A: unilaterally flex vertebral column to same
side and bilaterally extend
O: SP of the upper lumbar vertebrae and lower thoracic vertebrae
I: SP of upper thoracic
N: spinal
Longissimus Capitis Right Ans - A: unilaterally flex vertebral column to
same side and bilaterally extend to vertebral column
O: TP of upper 5 thoracic vertebrae
I: mastoid process of temporal bone
N: spinal
Longissimus Cervicis Right Ans - A: unilaterally flex vertebral column to
same side and bilaterally extend to vertebral column
O: TP of upper 5 thoracic vertebrae
I: TP of cervical vertebrae
N: spinal
Longissimus Thoracis Right Ans - A: unilaterally flex vertebral column to
same side and bilaterally extend to vertebral column
O: common tendon
I: lower 9 ribs and TP of thoracic vertebrae
N: spinal
Iliocostalis lumborum Right Ans - A: unilaterally flex vertebral column to
same side and bilaterally extend to vertebral column
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