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anatomy oina > neck to fingers > Flashcards

neck to fingers Flashcards

1
Q

traps

A

O: superior nuchal line; external occipital protuberance; nuchal ligament; spinous processes c7 to c12
I: acromion and spine of scap; lateral 1/3 clavicle
N: spinal accessory nerve CNXI (motor), c3-4 (sensory)
A: elevation, depression retraction, upward rotation scapula
upper: elevation, upward rotation, retraction scapula
middle: retraction scapula
lower: depression, upward rotation, retraction scapula

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2
Q

Levator scapulae

A

 O: Transverse process C1-4
 I: Medial border scapula (superior to spine)
 N: Dorsal scapular n. (C3,C4)
 A: Elevation & downward rotation scapula
 Elevation, downward rotation scapula (proximal attachment fixed)
 Lateral flexion, ipsilateral cervical rotation (distal attachment fixed

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3
Q

Pectoralis major

A

 O:
 Clavicular head: anterior surface medial half clavicle
 Sternocostal head: anterior surface sternum, superior 6 costal cartilages,
aponeurosis external oblique
 I: Lateral lip bicipital groove humerus (PLT)
 N: Lateral and medial pectoral nerves,
 Clavicular head: Lateral pectoral n. (C5,C6,C7)
 Sternocostal head: Medial pectoral n. (C8,T1)
 A: Both heads: Adduction (horizontal), IR of shoulder; draws scapula
anteriorly, inferiorly
 Clavicular head: Flexion shoulder
 Sternocostal head: Extension shoulder

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4
Q

Pectoralis minor

A

 O: Ribs 3–5 near costal cartilages
 I: Coracoid process scapula
 N: Medial pectoral nerve (C8,T1)
 A: Depression, protraction scapula
 (Stabilization scapula drawing inferiorly, anteriorly against thoracic wall)

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5
Q

Serratus anterior

A

 O: Lateral parts ribs 1-8
 I: Anterior surface medial border scapula
 N: Long thoracic nerve (C5,C6,C7)
 A: Protraction scapula, holds scapula against thoracic wall, upward rotation
scapula

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6
Q

Rhomboid major

A

 O: Spinous processes T2-T5
 I: Medial border scapula (inferior to spine)
 N: Dorsal scapular (C4,C5)
 A: Elevation, retraction, downward rotation scapula; scapular stabilization against
trunk with UE movement

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7
Q

Rhomboid minor

A

 O: Nuchal ligament; spinous processes C7-T1
 I: Medial end scapular spine
 N: Dorsal scapular (C4,C5)
 A: Elevation, retraction, downward rotation scapula; scapular stabilization against
trunk with UE movement

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8
Q

Deltoid

A

 O: Lateral 1/3 clavicle; acromion, spine scapula
 I: Deltoid tuberosity of humerus
 N: Axillary nerve (C5,C6)
 A:
 Anterior head: flexion, medial rotation (IR) shoulder
 Medial head: abduction shoulder
 Posterior head: extension, lateral rotation (ER) shoulder

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9
Q

Coracobrachialis

A

 O: Coracoid process scapula
 I: Middle 1/3 medial surface humerus
 N: Musculocutaneous n. (C6,C7)
 A: Flexion, adduction shoulder; resists shoulder dislocation

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10
Q

Latissimus dorsi

A

 O: Spinous processes T7-12; thoracolumbar fascia; iliac crest; ribs 9-12
 I: Floor bicipital groove (PLT)
 N: Thoracodorsal nerve (C6,C7,C8)
 A: Extension, adduction, medial rotation shoulder

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11
Q

Teres major

A

 O: Inferior angle scapula
 I: Medial lip bicipital groove (PLT)
 N: Lower subscapular nerve (C5,C6)
 A: Adduction, medial rotation, extension shoulder

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12
Q

Supraspinatus

A

 O: Supraspinous fossa scapula
 I: Greater tubercle humerus - superior facet
 N: Suprascapular nerve (C5,C6)
 A: Abduction shoulder; dynamic stabilization

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13
Q

Infraspinatus

A

 O: Infraspinous fossa scapula
 I: Greater tubercle humerus - middle facet
 N: Suprascapular nerve (C5,C6)
 A: Lateral rotation shoulder; holds humerus in glenoid cavity

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14
Q

Teres minor

A

 O: Lateral border scapula
 I: Greater tubercle of humerus - inferior facet
 N: Axillary nerve (C5,C6)
 A: Lateral rotation shoulder; holds humerus in glenoid cavity

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15
Q

Subscapularis

A

 O: Subscapular fossa
 I: Lesser tubercle humerus
 N: Upper, Lower subscapular nerves (C5,C6)
 A: Medial rotation, adduction shoulder, holds humerus in glenoid cavity

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16
Q

Subclavius

A

 O: Junction of 1st rib and costal cartilage
 I: Inferior surface middle 1/3 clavicle
 N: Nerve to subclavius (C5,C6)
 A: Anchors, depresses clavicle

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17
Q

Biceps brachii

A

 O:
 Short head: Coracoid process scapula
 Long head: supraglenoid tubercle scapula
 I: Radial tuberosity (fascia of forearm @ bicipital aponeurosis)
 N: Musculocutaneous nerve (C5,C6)
 A: Supination forearm; flexion elbow; short head resists dislocation of shoulder;
assists shoulder flexion

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18
Q

Brachialis

A

 O: Distal half anterior surface humerus
 I: Coronoid process, tuberosity ulna
 N: Musculocutaneous n. (C5,C6)
 A: Flexion elbow

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19
Q

Brachioradialis

A

 O: Proximal 2/3 lateral supracondylar ridge humerus
 I: Styloid process radius
 N: Radial nerve (C5,C6)
 A: Flexion elbow

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20
Q

Triceps brachii

A

 O:
 Long head: infraglenoid tubercle scapula
 Lateral head: posterior surface humerus superior to radial groove
 Medial head: posterior surface humerus inferior to radial groove
 I: Proximal end olecranon process (fascia of forearm)
 N: Radial nerve (C7,C8)
 A: Extension elbow, long head: extension shoulder; resists dislocation of shoulder

21
Q

Anconeus

A

 O: Lateral epicondyle humerus
 I: Lateral surface olecranon process, superior/posterior surface ulna
 N: Radial nerve (C7,C8)
 A: Assists extension, stabilization elbow

22
Q

Pronator teres

A

 O: Medial epicondyle, coronoid process ulna
 I: Middle lateral surface radius
 N: Median nerve (C6,C7)
 A: Pronation forearm, flexion elbow

23
Q

Flexor carpi radialis (FCR)

A

 O: Medial epicondyle humerus
 I: Base 2nd metacarpal
 N: Median nerve (C6,C7)
 A: Flexion, radial deviation hand/wrist

24
Q

Palmaris longus

A

 O: Medial epicondyle humerus
 I: Palmar aponeurosis, distal flexor retinaculum
 N: Median nerve (C7,C8)
 A: Assists hand/wrist flexion, tightens palmar aponeurosis

25
Q

Flexor carpi ulnaris (FCU)

A

 O:
 Humeral head: medial epicondyle of humerus
 Ulnar head: olecranon process, posterior border ulna
 I: Pisiform, hook of hamate, base 5th metacarpal
 N: Ulnar nerve (C8,T1)
 A: Flexion, ulnar deviation (adduction) hand/wrist

26
Q

Flexor digitorum superficialis (FDS)

A

 O:
 Humeral head: medial epicondyle humerus, ulnar collateral ligament,
coronoid process ulna
 Radial head: proximal half anterior radius
 I: Bodies of middle phalanges digits 2-5.
 N: Median nerve (C7,C8,T1)
 A: Flexion PIP joints, assists flexion MCP joints with digits 2-5

27
Q

Flexor digitorum profundus (FDP)

A

 O: Proximal 3/4 medial, anterior ulna; anterior interosseous membrane
 I: Bases distal phalanges digits 2-5
 N:
 Medial part: ulnar nerve (C8,T1)
 Lateral part: median nerve (C8,T1)
 A: Flexion DIP joints of digits 2-5, assists flexion hand/wrist

28
Q

Flexor pollicis longus (FPL)

A

 O: Anterior radius, interosseous membrane
 I: Base distal phalanx thumb
 N: Median nerve (C8,T1)
 A: Flexion IP joint thumb, assists flexion MCP joint thumb

29
Q

Pronator Quadratus

A

 O: Distal ¼ of ulna
 I: Distal ¼ of radius
 N: Median nerve (C8,T1)
 A: Pronation forearm, assists stabilization distal radius/ulna

30
Q

Supinator

A

 O: Lateral epicondyle humerus, lateral border ulna
 I: Proximal 1/3 anterior, lateral radius
 N: Radial nerve (C5,C6)
 A: Supination forearm

31
Q

Extensor carpi radialis longus

A

 O: Distal 1/3 lateral supracondylar ridge humerus
 I: Base of 2nd metacarpal
 N: Radial nerve (C6,C7,C8)
 A: Extension, radial deviation wrist/hand

32
Q

Extensor carpi radialis brevis

A

 O: Lateral epicondyle humerus
 I: Base of 3rd metacarpal
 N: Radial nerve (C6,C7,C8)
 A: Extension, radial deviation wrist/hand

33
Q

Extensor digitorum

A

 O: Lateral epicondyle humerus
 I: Extensor expansions digits 2-5
 N: Radial nerve (C6,C7,C8)
 A: Extension digits 2–5 (MCP, IP joints); assists wrist extension

34
Q

Extensor digiti minimi

A

 O: Lateral epicondyle humerus
 I: Extensor expansions 5th digit
 N: Radial nerve (C6,C7,C8)
 A: Extension 5th digit (MCP, IP joints)

35
Q

Extensor carpi ulnaris

A

 O: Lateral epicondyle humerus, posterior border ulna
 I: Base of 5th metacarpal
 N: Radial nerve (C6,C7,C8)
 A: Extension, ulnar deviation wrist/hand

36
Q

Extensor indices

A

 O: Posterior surface of ulna, interosseous membrane
 I: Extensor expansions 2nd digit
 N: Radial nerve (C6,C7,C8)
 A: Extension 2nd digit

37
Q

Abductor pollicis longus

A

 O: Proximal posterior ulna, interosseous membrane, radius
 I: Base of 1st metacarpal
 N: Radial nerve (C6,C7,C8)
 A: ABduction thumb

38
Q

Extensor pollicis brevis

A

 O: Posterior radius, interosseous membrane.
 I: Base of proximal phalanx 1st digit
 N: Radial nerve (C6,C7,C8)
 A: Extension MCP joint thumb, extension CMC joint

39
Q

Extensor pollicis longus

A

 O: Middle 1/3 of posterior ulna, interosseous membrane.
 I: Base of distal phalanx 1st digit
 N: Radial nerve (C6,C7,C8)
 A: Extension IP joint thumb, extension MCP, CMC joints

40
Q

Abductor pollicis brevis

A

o N: Median nerve
o A: Abduction thumb, assists opposition

41
Q

Flexor pollicis brevis

A

o N: Median nerve
o A: Flexion thumb

42
Q

Opponens pollicis

A

o N: Median nerve
o A: Opposition thumb

43
Q

Adductor pollicis

A

o N: Ulnar nerve
o A: Adduction thumb toward midline of hand

44
Q

Abductor digiti minimi

A

o N: Ulnar nerve
o A: Abduction 5th digit

45
Q

Flexor digiti minimi brevis

A

o N: Ulnar nerve
o A: Flexion 5th digit

46
Q

Opponens digiti minimi

A

o N: Ulnar nerve
o A: Opposition 5th digit

47
Q

Lumbricals

A

o O: Tendons of FDP (flexor digitorum profundus)
o I: Extensor expansion hood digits 2-5
o N:
 digits 1-2: median nerve
 digits 3-4: ulnar nerve
o A: Flexion MCP joint

48
Q

Interosseous muscles

A

o N: all innervated by ulnar nerve
o Four dorsal interossei
 A: ABduction digits with midline of hand
o Three palmer interossei
 A: Adduction digits with midline of hand

49
Q

Palmaris brevis

A

o Subcutaneous tissue of hypothenar region (NOT in hypothenar compartment)
o “Wrinkle” skin of hypothenar eminence, deepen hollow of palm

anatomy oina (3 decks)

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