Term
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Definition
Deltoid
O:
• Lateral 1/3 of clavicle
• Spine of scapula
• Acromion process of scapula
I:Deltoid tuberosity of the humerus
A:
• Abducts arm
• Flexes arm at shoulder
• Rotates arm medially
• Extends arm atshoulder
• Rotates arm laterally
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Term
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Definition
Latissimus Dorsi
O:
• Spinous processes of T7-T12
• Ribs 9-12
• Iliac crest
• Inferior angle of scapula
I:
• Intertubercular groove of the humerus
A:
• Extends arm at shoulder
• Adducts arm
• Rotates arm medially |
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Term
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Definition
Supraspinatus
O:
• Supraspinous fossa of the scapula
I:
• Greater tubercle of the humerus
A:
• Rotates arm laterally
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Term
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Definition
Levator scapula
O:
Transverse processes of C1-C4
I:
Vertebral border of the scapula
A:
• Elevates scapula
• Downwardly rotatesscapula
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Term
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Definition
Rhomboid minor
O:
Spinous processes of C7-T1
I:
Vertebral border of the scapula
A:
• Adducts scapula
• Downwardly rotates scapula
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Term
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Definition
Rhomboid major
O:
Spinous processes of T2-T5
I:
Vertebral border of the scapula
A:
• Adducts scapula
• Downwardly rotates scapula
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Term
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Definition
Infraspinatus
O:
• Infraspinous fossa of the scapula
I:
• Greater tubercle of the humerus
A:
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Term
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Definition
Teres minor
O:
• Lateral border of the scapula
I:
• Lesser tubercle of the humerus
A:
• Lesser tubercle of the humerus
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Term
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Definition
Teres Major
O:
• Inferior angle of the scapula
I:
• Lesser tubercle of the humerus
A:
• Adducts arm
• Rotates arm medially
• Extends arm at shoulder
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Term
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Definition
Iliocostalis
O:
• Iliac crest
• Ribs 3-12
I:
• Inferior border of ribs
• Transverse processes of C4-C6
A:
• Extends vertebral column
• Laterally flexes vertebral column
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Term
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Definition
Longissimus
O:
• Transverse processes of C4-L5
I:
Mastoid process of temporal bone
A:
• Extends vertebral column
• Laterally flexes vertebral column
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Term
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Definition
Spinalis
O:
• Spinous
processes of
T7-L3
I:
Spinous processes of
C4-T6
A:
• Extends vertebral
column
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Term
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Definition
Splenius capitis
O:
• Spinous processes of C6-T7
I:
• Mastoid process of temporal bone
• Occipital bone
A:
• Extends or hyperextends vertebral column
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Term
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Definition
Semispinalis capitis
O:
• Transverse processes of C7-T12
I:
Occipital bone
A:
• Extends vertebral column
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Term
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Definition
RECTUS CAPITUS POSTERIOR MAJOR
O:
Spinous process of axis (C2)
INSERTION
Lateral half of inferior nuchal line
ACTION
Extends and rotates atlanto-occipital joint
NERVE
Suboccipital nerve (posterior primary ramus C1)
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Term
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Definition
RECTUS CAPITUS POSTERIOR MINOR
ORIGIN
Posterior process of atlas (C1)
INSERTION
Medial half of inferior nuchal line
ACTION
Extends and rotates atlanto-occipital joint
NERVE
Suboccipital nerve (posterior primary ramus C1
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Term
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Definition
OBLIQUUS CAPITIS INFERIOR
ORIGIN
Spinous process of axis (C2)
INSERTION
Lateral mass of atlas (C1)
ACTION
Rotates atlanto-axial joint
NERVE
Suboccipital nerve (posterior primary ramus of C1)
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Term
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Definition
OBLIQUUS CAPITIS SUPERIOR
ORIGIN
Lateral mass of atlas (C1)
INSERTION
Lateral half inferior nuchal line
ACTION
Lateral flexes atlanto-occipital joint
NERVE
Suboccipital nerve (posterior primary ramus of C1)
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Term
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Definition
TRAPEZIUS
ORIGIN
Medial third superior nuchal line, ligament nuchae, spinous processes and supraspinous ligaments to T12
INSERTION
Upper fibers to lateral third of posterior border of clavicle; lower to medial acromion and superior lip of spine of scapula to deltoid tubercle
ACTION
laterally rotates, elevates and retracts scapula. If scapula is fixed, extends and laterally flexes neck
NERVE
Spinal accessory nerve (C1-5)(spinal nerves C3 and C4 for proprioception)
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Term
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Definition
SERRATUS POSTERIOR INFERIOR
ORIGIN
Spinous processes and supraspinous ligaments of T11-L2
INSERTION
Posterior aspect of ribs 9-12
ACTION
Assists forced expiration
NERVE
Anterior primary rami (T9-12)
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Term
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Definition
SERRATUS POSTERIOR SUPERIOR
ORIGIN
Spinous processes and supraspinous ligaments of C7-T2
INSERTION
Posterior aspect of ribs 2-5
ACTION
Assists forced inspiration
NERVE
Anterior primary rami (T2-5)
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Term
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Definition
LEVATORES COSTARUM
ORIGIN
Transverse processes C7 to T11
INSERTION
Posterior surface and angle of rib below
NERVE
Posterior primary rami
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Term
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Definition
MULTIFIDUS
ORIGIN
Laminae of vertebra
INSERTION
Spinous processes two to three levels above
NERVE
Posterior primary rami
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Term
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Definition
ROTATORES
ORIGIN
Transverse processes
INSERTION
Spinous processes one above
NERVE
Posterior primary rami
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