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

Upper Extremity Flashcards

(49 cards)

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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

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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

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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

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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

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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

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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
Flexor Digitorum Profundus
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
Flexor Pollicis Longus
origin:interosseus membrane shaft/radius Insertion: distal phalanx/digit 1 Action: flexes the thumb (digit 1) @IP joint Innervation: median nerve
27
Pronator Quadratus
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
Brachioradialis
Origin: lateral supracondylar ridge/humerus Insertion: styloid process/ radius Action: helps flex forearm, pronates and supinates the forearm Innercation: radial nerve
29
Extensor Carpi Radialis Longus
Origin: lateral epicondyle/ humerus Insertion: 2nd metacarpal Action: extend the hand, abduct the hand Innervation: radial nerve
30
Extensor Carpi Radialis Brevis
origin: lateral epicondyle/humerus insertion: 3rd metacarpal Action: extend the hand, abduct the hand Innervation: radial nerve
31
Extensor Digitorum Maximus
origin: lateral epicondyle/humerus insertion: middle phalanx/digit 5 Action: extends digits 2-5, extend the hand Innervation: radial nerve
32
Extensor Digiti Minimi
origin: lateral epicondyle/humerus insertion: proximal phalanx/ digit 5 Action: extend digit 5 innervation: radial nerve
33
Extensor Carpi Ulnaris
origin: shaft/ulna, lateral epicondyle/humerus Insertion: 5th metacarpal Action: extend hand, helps adduct hand Innervation: radial nerve
34
Supinator
Origin: lateral epicondyle/humerus, supinator crest/ulna Insertion: shaft/radius Action: supinates forearm Innervation: radial nerve
35
Abductor Pollicis Longus
origin: interosseous membrane shaft/ulna and radius insertion: 1st metacarpal Action: abducts digit 1 @CMjoint, extends digit 1 Innervation: Radial nerve
36
Extensor Pollicis Brevis
origin: interosseous membrane shaft/radius Insertion: proximal phalanx/digit 1 Action: extends digit 1 @MP joint Innervation: radial nerve
37
Extensor Pollicis Longus
origin: interosseous membrane shaft/ ulna Insertion: distal phalanx/digit 1 Action: extends digit 1 @IP joint Innervation: radial nerve
38
Extensor Indicis
Origin: interosseous membrane shaft/ulna Insertion: proximal phalanx/digit 2 Action: extends digit 2 Innervation: radial nerve
39
Anconeus
origin: lateral epicondyle/humerus Insertion: olecranon process and posterior proximal shaft/ulna Action: extends forearm Innervation: radial nerve
40
Abductor Pollicis Brevis
Origin: trapezium and scaphoid Insertion: proximal phalanx/digit 1 Action: abducts digit 1 @MP joint Innervation: median nerve
41
Opponens Pollicis
Origin: trapezium Insertion: 1st metacarpal Action: medially rotates 1st metacarpal innervation: median nerve
42
Flexor Pollicis Brevis
origin: trapezium, trapezoid, and capitate bones Insertion: proximal phalanx/digit 1 Action: flexes digit 1 @MP joint Innervation: ulnar and median nerve
43
Adductor pollicis
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
Abductor Digiti Quinti/Minimi
origin:pisiform Insertion: proximal phalanx/digit 5 Action: abducts digit 5 Innervation: ulnar nerve
45
Flexor digiti Quinti/ minimi
origin: hamate Insertion: proximal phalanx/digit 5 Action: flexes digit 5 @ MP joint Innervation: ulnar nerve
46
Opponens Digiti Quinti/minimi
origin: hamate Insertion: 5th metacarpal Action: laterally rotates 5th metacarpal Innervation: ulnar nerve
47
Lumbricales
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
dorsal
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
Palmar
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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