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Gross 1 Lab Muscles for Upper Extremity > Upper Extremity > Flashcards

Upper Extremity Flashcards

1
Q

Pectoralis Major

A

Origin: clavicle (clavicular portion)
sternum and upper ribs (sternal-costal portion)
tendon of the external oblique muscle (abdominal portion)
Insertion: greater tubercle inter-tubercular groove of the humerus
Action: (Entire Muscle) adduction and medial rotation of humerus, forced inspiration by elevating the rib cage when the humerus is flexed
Clavicular portion: flexes humerus @shoulder joint
Sternocostal portion: extends humerus @shoulder joint
Innervation: medial and lateral pectoral nerve

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2
Q

Pectoralis Minor

A

Origin: ribs 3-5
Insertion: coracoid process of scapula
Action: involved with protraction/abduction of the scapula. Elevates ribcage and thus involved with forced inspiration
Innervation: medial pectoral nerve

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3
Q

Subclavius

A

Origin: first rib
Insertion: subclavian groove/clavicle
Action: moves clavicle medially. Acts as protective cushion between clavicle and subclavian vessels.
Innervation: nerve to subclavius

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4
Q

Trapezius

A

Origin: superior nuchal line/occiput, external occipital protuberance, ligamentum nuchae, spine of C7-T12
Insertion: clavicle, acromion process and spine of scapula
Action: stabilizes the scapula
Upper Portion: elevates scapula
Middle and lower portions: adducts scapula and depresses scapula
Innervation: spinal accessory nerve
sensory C3,C4

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5
Q

Rhomboid Major

A

Origin: spines/ upper thoracics
Insertion: Vertebral border/scapula
Action: elevate and adducts scapula, helps stabilize scapula
Innervation: dorsal scapular nerve

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6
Q

Rhomboid Minor

A

Origin: spines/C7 and T1
Insertion: vertebral border/scapula
Action: elevate and adducts scapula, helps stabilize scapula
Innervation: Dorsal Scapular Nerve

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7
Q

Levator Scapula

A

Origin: transverse processes/upper cervical vertebrae
Insertion: upper medial border and superior angle/scapula
Action: elevate scapula, adducts scapula, stabilize scapula
Innervation: dorsal scapular nerve

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8
Q

Latissimus Dorsi

A

Origin: spines/lower thoracic and lumbar vertebrae, thoracodorsal fascia, crest of the ilium, and lower ribs
Insertion: intertubercular groove/lesser tubercle
Action: extends, adduct and medially rotate the humerus, involved in forced expiration
Innervation: Thoracodorsal Nerve

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9
Q

Serratus Anterior

A

Origin: upper 8 or 9 ribs
Insertion: vertebral border/scapula
Action: abduction/protraction of scapula, stabilizes the scapula, involved with forced inspiration(only when humerus is abducted)
Innervation: Long Thoracic Nerve

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10
Q

Deltoid

A

Origin: anterior/clavicular portion from clavicle, middle/acromial portion from the acromion process of scapula, posterior/spinous portion
Insertion: deltoid tuberosity/humerus
Action: Anterior Portion: flexes and medially rotates arm
Middle portion: abducts arm Posterior Portion: extends and laterally rotates arm
Innervation: axillary nerve

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11
Q

Supraspinatus

A

Origin: supraspinous fossa/scapula
Insertion: greater tuberosity of humerus
Action: initiates abduction of arm, helps laterally rotate humerus, helps stabilize shoulder joint
Innervation: Suprascapular Nerve

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12
Q

Infraspinatus

A

Origin: infraspinous fossa/scapula
Insertion: greater tuberosity humerus
Action: Laterally rotates humerus, stabilizes shoulder joint
Innervation: Suprascapular nerve

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13
Q

Subscapularis

A

Origin: subscapular fossa/scapula
Insertion: lesser tuberosity/humerus
Action: Medially rotates humerus, stabilizes shoulder joint
Innervation: upper and lower subscapular nerve

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14
Q

Teres Major

A

Origin: inferior angle/scapula
Insertion: intertubercular groove (lesser tubercle)/humerus
Action: adducts humerus, stabilizes shoulder joint, medially rotates humerus
Innervation: lower subscapular nerve

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15
Q

Teres Minor

A

Origin: axillary border/scapula
Insertion: greater tuberosity/humerus
Action: laterally rotates humerus, stabilizes shoulder joint
Innervation: axillary nerve

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16
Q

Biceps Brachii

A

Origin: Short head: coracoid process/scapula Long head: supraglenoid tubercle/scapula
Insertion: tuberosity/radius and shaft/ulna
Action: flexion of forearm, supinates the radius (PM)
Innervation: musculocutaneous Nerve

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17
Q

Coracobrachialis

A

Origin: coracoid process/scapula
Insertion: shaft/humerus
Action: flexion and weak adduction of arm (SJ), stabilizes shoulder joint
Innervation: Musculocutaneous nerve

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18
Q

Brachialis

A

Origin: shaft/humerus
Insertion: ulnar tuberosity and coronoid process/ ulna
Action: flexes forearm (equal PM)
Innervation: musculocutaneous nerve

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19
Q

Triceps Brachii

A

Origin: Long head: infraglenoid tubercle/scapula; Lateral head: shaft/humerus; medial head: shaft/humerus
Insertion: olecranon process/ulna
Action: extension of forearm
Innervation: radial nerve

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20
Q

Pronator Teres

A

Origin: Medial epicondyle/humerus, coronoid process/ulna
Insertion: pronator ridge/radius
Action: pronates forearm at superior radioulnar joint, assists flexion at elbow joint
Innervation: Median Nerve

21
Q

Flexor Carpi Radialis

A

origin: medial epicondyle/humerus
Insertion: 2nd metacarpal w/small slip to 3rd metacarpal
Action: equal PM for flexion of hand @ wrist joint, assists in abduction of hand
Innervation: median nerve

22
Q

Palmaris Longus

A

Origin: medial epicondyle/humerus
Insertion: palmar aponeurosis
Action: helps flex hand, tightens palmar aponeurosis of palm/helps with palmar grip
Innervation: Median nerve

23
Q

Flexor Carpi Ulnaris

A

origin: medial epicondyle/humerus, olecranon process ulna
Insertion: pisiform, hamate and 5th metacarpal
Action: equal PM for flexion of hand @ wrist joint, adducts hand
Innervation: ulnar nerve

24
Q

Flexor digitorum superficialis

A

origin: shaft/radius, medial epicondyle/humerus
Insertion: middle phalanges/digits 2-5
Action: flexes the PI joints of digits 2-5, helps flex hand
Innervation: median nerve

25
Q

Flexor Digitorum Profundus

A

Origin: interosseous membrane shaft/ulna
Insertion: distal phalanges/digits 2-5
Action: flexes DIP joints of digits 2-5, helps flex hand
Innervation: ulnar nerve and median nerve

26
Q

Flexor Pollicis Longus

A

origin:interosseus membrane shaft/radius
Insertion: distal phalanx/digit 1
Action: flexes the thumb (digit 1) @IP joint
Innervation: median nerve

27
Q

Pronator Quadratus

A

Origin: distal anterior shaft/ulna
Insertion: distal anterior shaft/radius
Action: pronation of forearm @inferior radial-ulnar joint, helps stabilize the inferior-radial-ulnar joint
Innervation: median nerve

28
Q

Brachioradialis

A

Origin: lateral supracondylar ridge/humerus
Insertion: styloid process/ radius
Action: helps flex forearm, pronates and supinates the forearm
Innercation: radial nerve

29
Q

Extensor Carpi Radialis Longus

A

Origin: lateral epicondyle/ humerus
Insertion: 2nd metacarpal
Action: extend the hand, abduct the hand
Innervation: radial nerve

30
Q

Extensor Carpi Radialis Brevis

A

origin: lateral epicondyle/humerus
insertion: 3rd metacarpal
Action: extend the hand, abduct the hand
Innervation: radial nerve

31
Q

Extensor Digitorum Maximus

A

origin: lateral epicondyle/humerus
insertion: middle phalanx/digit 5
Action: extends digits 2-5, extend the hand
Innervation: radial nerve

32
Q

Extensor Digiti Minimi

A

origin: lateral epicondyle/humerus
insertion: proximal phalanx/ digit 5
Action: extend digit 5
innervation: radial nerve

33
Q

Extensor Carpi Ulnaris

A

origin: shaft/ulna, lateral epicondyle/humerus
Insertion: 5th metacarpal
Action: extend hand, helps adduct hand
Innervation: radial nerve

34
Q

Supinator

A

Origin: lateral epicondyle/humerus, supinator crest/ulna
Insertion: shaft/radius
Action: supinates forearm
Innervation: radial nerve

35
Q

Abductor Pollicis Longus

A

origin: interosseous membrane shaft/ulna and radius
insertion: 1st metacarpal
Action: abducts digit 1 @CMjoint, extends digit 1
Innervation: Radial nerve

36
Q

Extensor Pollicis Brevis

A

origin: interosseous membrane shaft/radius
Insertion: proximal phalanx/digit 1
Action: extends digit 1 @MP joint
Innervation: radial nerve

37
Q

Extensor Pollicis Longus

A

origin: interosseous membrane shaft/ ulna
Insertion: distal phalanx/digit 1
Action: extends digit 1 @IP joint
Innervation: radial nerve

38
Q

Extensor Indicis

A

Origin: interosseous membrane shaft/ulna
Insertion: proximal phalanx/digit 2
Action: extends digit 2
Innervation: radial nerve

39
Q

Anconeus

A

origin: lateral epicondyle/humerus
Insertion: olecranon process and posterior proximal shaft/ulna
Action: extends forearm
Innervation: radial nerve

40
Q

Abductor Pollicis Brevis

A

Origin: trapezium and scaphoid
Insertion: proximal phalanx/digit 1
Action: abducts digit 1 @MP joint
Innervation: median nerve

41
Q

Opponens Pollicis

A

Origin: trapezium
Insertion: 1st metacarpal
Action: medially rotates 1st metacarpal
innervation: median nerve

42
Q

Flexor Pollicis Brevis

A

origin: trapezium, trapezoid, and capitate bones
Insertion: proximal phalanx/digit 1
Action: flexes digit 1 @MP joint
Innervation: ulnar and median nerve

43
Q

Adductor pollicis

A

origin: trapezoid, capitate, 2nd and 3rd metacarpals (oblique head), 3rd metacarpal (transverse head)
Insertion: proximal phalanz/digit 1
Action: adducts digit 1
Innervation: ulnar nerve

44
Q

Abductor Digiti Quinti/Minimi

A

origin:pisiform
Insertion: proximal phalanx/digit 5
Action: abducts digit 5
Innervation: ulnar nerve

45
Q

Flexor digiti Quinti/ minimi

A

origin: hamate
Insertion: proximal phalanx/digit 5
Action: flexes digit 5 @ MP joint
Innervation: ulnar nerve

46
Q

Opponens Digiti Quinti/minimi

A

origin: hamate
Insertion: 5th metacarpal
Action: laterally rotates 5th metacarpal
Innervation: ulnar nerve

47
Q

Lumbricales

A

Origin: tendons of the flexor digitorum profundus muscle
Insertion: tends of the extensor digitorum muscle
Action: flexes MP joints, extends IP joints
Innervation: 1st and 2nd median nerve
3rd and 4th ulnar nerve

48
Q

dorsal

A

Origin: 2nd,3rd, 4th metacarpals
Insertion: proximal phalanx of digits 2,3,4
Action: abducts digits 2-4, flex MP joints, extends IP joints
Innervation: ulnar nerve

49
Q

Palmar

A

Origin: 2,3,4, and 5 metacarpals
Insertion: proximal phalanx of digits 2,3,4
Action: adduct digits 2,4,5; flex MP joints, extends MP joints
Innervation: Ulnar Nerve

Gross 1 Lab Muscles for Upper Extremity (1 decks)

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