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Myofacial > ÅR.2 Muskler > Flashcards

ÅR.2 Muskler Flashcards

1
Q

Deltoid

A

Origin
ANTERIOR: Lateral third of clavicle
MIDDLE: Acromion
POSTERIOR: spine of scapula

Insertion
Deltoid tubercle on the humerus

Nerve:
Axillary C5,6

Action:
ALL: Vertical abduction
ANTERIOR: medial rotation, flexion
POSTERIOR: lateral rotation, extension

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2
Q

Supraspinatus

A

Origin:
Medial 2/3 of supraspinous fossa

Insertion:
Superior facet of greater tubercle of humerus + shpulder joint capsule

Nerve:
Suprascapular C5,6

Action:
Stabilize humeral head. Abduction

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3
Q

Infraspinatus

A

Origin:
Medial 2/3 of infraspinous fossa

Insertion:
Middle facet of greater tubercle of humerus + shoulder joint capsule

Nerve:
Suprascapular C5,6

Action:
Stabilize humeral head. Lateral rotation

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4
Q

Teres minor

A

Origin:
Upper 2/3 of posterior latteral border of scapula

Insertion:
Inferior facet of greater tubercle of humerus + shoulder joint capsule

Nerve:
Axillary C5,6

Action:
Stabilize humeral head. Lateral rotation, weak avduction of hunerus

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5
Q

Subscapularis

A

Origin:
Subscapular fossa

Insertion:
Lesser tubercle of humerus

Nerve:
Upper & lower subscapular nerve C5,6

Action:
Stabilize humeral head. Medial rotation

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6
Q

Teres major

A

Origin:
Oval area, on dorsal surface, of inferior scapular angle

Insertion:
Medial lip of bicipital groove

Nerve:
Lower subscapular nerve C5,6,7

Action:
Extension and medial rotation of humerus

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7
Q

Triceps brachii

A

Origin:
LONG head: infraglenoid tubercle of scapula
LATTERAL head: posterior upper humerus, superior to radial groove
MEDIAL head: posterior upper humerus, inferior to radial groove

Insertion:
Olecranon process

Nerve:
Radial C6, 7, 8

Action:
Extension of shoulder and elbow

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8
Q

Biceps brachii

A

Origin:
LONG head: supraglenoid tubercle of scapula
SHORT head: coracoid process

Insertion:
Radial tuberosity

Nerve:
Musculocutaneous C5,6

Action:
Flexion of shoulder and elbow, supination of forearm

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9
Q

Coracobrachialis

A

Origin:
Coracoid process

Insertion:
Medial border of shaft og humerus

Nerve:
Musculocutaneous C5, 6, 7

Action:
Flexion and horizontal adduction of shoulder

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10
Q

Pectoralis minor

A

Origin:
Upper margins, outer surfaces of 3-5 ribs (near cartilages)

Insertion:
Coracoid process

Nerve:
Lateral + medial and pectoral nerve C5-T1

Action:
Protraction of scapula + rotate

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11
Q

Pectoralis major

A

Origin:
CLAVICULAR fibres: medial 1/2 of clavicle
STERNAL fibres: sternum. Upper 6 costal cartilages. Rib 6. External oblique aponeurosis

Insertion:
Lateral lip of bicipital groove

Nerve:
Medial and lateral pectoral nerves C5 - T1

Action:
Adduction + medial rotation of humerus

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12
Q

Middle trapezius

A

Origin:
T1 - T5 Sp’s

Insertion:
Acromion, spine of scapula

Nerve:
Spinal part of accessory nerve, sensory ventral rami C3, 4

Action:
Retraction of scapula + stabilization

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13
Q

Lower Trapezius

A

Origin:
T6 - T12 Sp’s

Insertion:
Medial spine of scapula - tubercle at its lateral apex

Nerve:
Spinal part of accessory nerve, sensory from ventral rami C3, 4

Action:
Retraction of scapula + stabillization

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14
Q

Brachioradialis

A

Origin:
Proximal 2/3 of lateral supracondylar ridge og humerus. lateral intermuscular septum

Insertion:
Lateral distal radius, proximal to styloid process

Nerve:
Radial C5, 6

Action:
Flexion of elbow (perticularly with forearm pronated)

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15
Q

Lattissimus dorsi

A

Origin:
T7 - S2 Sp’s. Thoracolumbar facia. Iliac crest. Lower 3-4 ribs. Inferior angle of scapula.

Insertion:
Bicipital groove

Nerve:
Thoracodorsal nerve C6, 7, 8

Action:
Adduction, extension, medial rotation of humerus. Aids deep inspiration and forced expiration.

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16
Q

Rhomboids

A

Origin:
MINOR: C7, T1 Sp’s
MAJOR: T2 - 5 Sp’s

Insertion:
MINOR: medial end of spine of scapula
MAJOR: medial border of scapula, between spine of scapula and inferior angle.

Nerve:
Dorsal scapular C4, 5

Action:
Scapular retraction + stabillization

17
Q

Serratus anterior

A

Origin:
Outer surface, fleashy digitations ribs 1-9

Insertion:
Medial border of scapula

Nerve:
Long thoracic C5, 6, 7

Action:
Fixes scapular position against resistance.
Uppward rotation of scapula. Protraction of scapula.

18
Q

Supinator

A

Origin:
Lateral epicondyle of humerus. Supinator crest of ulna. Radial collateral ligament

Insertion:
Lateral surface, proximal 1/3 radius

Nerve:
Posterior interosseous nerve C6, 7
(Branch of radial nerve)

Action:
Supination of forearm

19
Q

Flexor carpi radialis

A

Origin:
Medial epicondyle

Insertion:
Palmar surface of the base of the 2 metacarpal, sending a slip to the 3

Nerve:
Median nerve C6, 7

Action:
Flexion and radial diviation of wrist

20
Q

Pronator teres

A

Origin:
HUMERAL head: proximal ti medial epicondyle.
ULNAR head: medial side of coronoid process of ulna

Insertion:
Lateral surface of radial shaft

Nerve:
Median C6, 7

Action:
Pronation of forearm. Weak flexion of elbow

Myofacial (2 decks)

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