Back Flashcards

1
Q

Subscapularis

A

O: Subscapular Fossa
I: Lesser Tubercle of Humerus

Action: Shoulder - Extension, Adduction, Medial Rotation

Synergist: Latissimus Dorsi, Teres Major

Antagonist: Pec Major, Coracobrachialis

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2
Q

Supraspinatus

A

O: Supraspinatus Fossa
I: Greater Tubercle of Humerus

Action: Shoulder Abduction

Synergist: Deltoid

Antagonist: Latissimus Dorsi, Teres Major

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3
Q

Teres Major

A

O: Inferior Angle of Scapula
I: Humerus

Action: Shoulder - Extension, Adduction, Medial Rotation

Synergist: Latissimus Dorsi, Subscapularis

Antagonist: Pec Major, Coracobrachialis

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4
Q

Teres Minor

A

O: Lateral/Axillary Border of Scapula
I: Greater Tubercle of Humerus

Action: Shoulder- Lateral Rotation, Horizontal Abduction

Synergist: Infraspinatus

Antagonist: Pec Major

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5
Q

Infraspinatus

A

O: Infraspinous Fossa
I: Greater Tubercle of Humerus

Action: Shoulder - Lateral Rotation, Horizontal Abduction

Synergist: Teres Minor, Latissimus Dorsi, Posterior Deltoid

Antagonist: Anterior Deltoid, Subscapularis, Pec Major

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6
Q

Latissimus Dorsi

A

O: Iliac Crest, Spine T7-T12
I: Humerus (Medial Lip of Intertubercular Groove)

Action: Shoulder - Extension, Adduction, Medial Rotation

Synergist: Teres Major, Subscapularis

Antagonist: Pec Major, Coracobrachialis

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7
Q

Longissimus

A

O: C4-T5, L1-L5, Iliac Crest, Sacrum
I: C2-T12, Mastoid Process

Action: Unilaterally: Lateral flexion of trunk

Synergist: Spinalis

Antagonist: Rectus Abdominis

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8
Q

Multifidus

A

O: Sacrum, C4-L5 (transverse processes)
I: C2-L5 (Spinous processes)

Action: Unilaterally: Lateral Flexion of Trunk

Synergist: Longissimus, Spinalis

Antagonist: Rectus Abdominis

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9
Q

Quadratus Lumborum

A

O: Iliac Crest
I: 12th Rib, L1-L4 (transverse processes)

Action: Unilaterally: Lateral Flexion of Trunk; Bilaterally: Extension of Trunk

Synergist: Longissimus, Spinalis

Antagonist: Rectus Abdominis

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10
Q

Rhomboids

A

O: Rhomboid Minor, C7-T2 (spinous processes)
I: Medial Border of Scapula

Action: Scapula - Retraction, Adduction

Synergist: Middle Trapezius

Antagonist: Serratus Anterior, Pec Minor

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11
Q

Rotatores

A

O: Transverse processes of C1-L5
I: Spinous processes, just superior

Action: Unilaterally: Trunk rotate to opposite side
Bilaterally: Trunk extension

Synergist: Spinalis, Longissimus

Antagonist: Rectus Abdominis

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12
Q

Spinalis

A

O: Spinous processes of T11-L2
I: Spinous processes of T3-T8

Action: Unilaterally: Spine - Flex & Rotate to same side
Bilaterally: Trunk extension

Synergist: Longissimus

Antagonist: Rectus Abdominis

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13
Q

Trapezius

A

O: Occipital, T1-T12
I: Lateral 1/3 of Clavicle, Acromion Process, Spine of Scapula

Action: Scapula Elevation/Depression, Scapula Retraction/Adduction

Synergist: Levator Scapula (elevation), Rhomboid (retraction), Serratus Anterior (depression)

Antagonist: Serratus Anterior (elevation), Pec Minor (retraction), Levator Scapulae (depression)

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