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Anatomy > Appendicular Muscles - Upper Limb > Flashcards

Appendicular Muscles - Upper Limb Flashcards

1
Q

Trapezius

A

Origin: occipital bone & spinous processes
of thoracic vertebrae

Insertion: spine & acromion of scapula
clavicle

Action: elevates, retracts, depresses
scapula & clavicle
- extends neck

Innervation: accessory nerve

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2
Q

Pectoralis Minor

A

Origin: anterior & superior surfaces of ribs
3-5 or 2-4
- fascia covering external inter-
costal muscles

Insertion: corocoid process of scapula

Action: - depresses & protracts shoulder
- rotates scapula to move glenoid
cavity inferiorly

Innervation: medial pectoral nerve

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3
Q

Serratus Anterior

A

Origin: anterior & superior surfaces of ribs
1-8, 9, or 10

Insertion: anterior surface of vertebral
border of the scapula

Action: holds scapula in place against ribs

Innervation: long thoracic nerve

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4
Q

Levator Scapulae

A

Origin: transverse processes of first C1 to C4

Insertion: vertebral border of scapula near
the superior angle

Action: elevates scapula

Innervation: dorsal scapular nerve

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5
Q

Rhomboid Major

A

Origin: spinous processes of T2 to T5

Insertion: vertebral border of scapula

Action: keeps scapula in place

Innervation: dorsal scapular nerve

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6
Q

Deltoid

A

Origin: clavicle & scapula (acromion &
spine)

Insertion: deltoid tuberosity of humerus

Action: abduction

Innervation: axillary nerve

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7
Q

Subscapularis

A

Origin: subscapular fossa

Insertion: lesser tubercle of humerus

Action: medial rotation at the shoulder

Innervation: subscapular nerve

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8
Q

Coracobrachialis

A

Origin: corcacoid process

Insertion: meidal margin of shaft of
humerus

Action: adduction & flexion at shoulder

Innervation: musculocutaneous nerve

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9
Q

Biceps brachii

A

Origin: short head - coracoid process
long head - supragenoid tubercle

Insertion: radial tuberosity

Action: flexion at elbow & shoulder
supination

Innervation: musculocutaneous nerve

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10
Q

Pectoralis Major

A

Origin: cartilages of ribs 2-6
body of STERNUM
inferior & medial portion of clavicle

Insertion: crest of greater tubercle
lateral lip of sulcus of humerus

Action: flexion, adduction, & medial roation
at shoulder

Innervation: pectoral nerve

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11
Q

Supraspinatus

A

Origin: supraspinous fossa of scapula

Insertion: greater tubercle of humerus

Action: abduction at shoulder

Innervation: suprascapular nerve

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12
Q

Infraspinatus

A

Origin: infraspinous fossa of scapula

Insertion: greater tubercle of humerus

Action: lateral rotation at shoulder

Innervation: suprascapular nerve

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13
Q

Teres Major

A

Origin: inferior angle of scapula

Insertion: intertubercular sulcus of humerus

Action: extension, medial rotation, adduction

Innervation: lower subscapular nerve

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14
Q

Triceps brachii (long head)

A

Origin: infraglenoid tubercle of scapula

Insertion: olecranon of ulna

Action: extension of elbow
extension & adduction at shoulder

Innervation: radial nerve

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15
Q

Teres Minor

A

Origin: lateral border of scapula

Insertion: greater tubercle of humerus

Action: lateral rotation & adduction at
shoulder

Innervation: axillary nerve

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16
Q

Latissimus dorsi

A 
Origin: - spinous processes of inferior
                thoracic & all lumbar and sacral
                vertebrae
            - ribs 8-12
            - thoracolumbar fascia

Insertion: floor of the intertubercular sulcus

Action: extension, adduction, & medial
rotation at shoulder

Innervation: thoracodorsal nerve

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17
Q

Brachialis

A

Origin: distal half of anterior surface of
humerus

Insertion: ulnar tuberosity & coronoid
process

Action: flexion at elbow

Innervation: musculocutaneous nerve

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18
Q

Brachioradialis

A

Origin: ridge superior to the lateral
epicondyle of the humerus

Insertion: lateral aspect of styloid process of
the radius

Action: flexion at elbow

Innervation: radial nerve

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19
Q

Triceps brachii (lateral head)

A

Origin: superior, lateral margins of humerus

Insertion: olecranon of ulna

Action: extension at elbow

Innervation: radial nerve

20
Q

Triceps brachii (medial head)

A

Origin: posterior surface of humerus,
inferior to radial groove

Insertion: olecranon of ulna

Action: extension at elbow

Innervation: radial nerve

21
Q

Pronator teres

A

Origin: medial epicondyle of humerus
coronoid process of ulna

Insertion: middle of lateral surface of radius

Action: pronates forearm & hand
flexion at elbow

Inneration: meidan nerve

22
Q

Supinator

A

Origin: lateral epicondyle of humerus
ridge near radial notch of ulna

Insertion: anterolateral surface of radius,
distal to the radial tuberosity

Action: supinate forearm

Innervation: deep radial nerve

23
Q

Flexor carpi radialis

A

Origin: medial epicondyle of humerus

Insertion: metacarpals (2nd & 3rd)

Action: flexion & abduction at wrist

Innervation: median nerve

24
Q

Flexor carpi ulnaris

A

Origin: -medial epicondyle of humerus
-adjacent medial surface of
olecranon & anteromedial portion
of ulna

Insertion: medial metacarpal bones

Action: flexion & adduction at wrist

Innervation: ulnar nerve

25
Q

Extensor carpi radialis longus

A

Origin: lateral supracondylar ridge of
humerus

Insertion: lateral metacarpal bones (2nd)

Action: extension & abduction at wrist

Innervation: radial nerve

26
Q

Extensor carpi radialis brevis

A

Origin: lateral epicondyle of humerus

Insertion: metacarpal bone (3rd)

Action: extension & abduction at wrist

Innervation: radial nerve

27
Q

Extensor carpi ulnaris

A

Origin: -lateral epicondyle of humerus
-adjacent dorsal surface of ulna

Insertion: medial metacarpal bone (5th)

Action: extension & adduction at wrist

Innervation: deep radial nerve

28
Q

Adductor pollicis

A

Action: adduction of thumb

Innervation: ulnar nerve

29
Q

Opponens pollicis

A

Action: opposition of thumb

Innervation: median nerve

30
Q

Palmaris brevis

A

Action: moves skin on medial border
toward midline of palm

Innervation: ulnar nerve

31
Q

Abductor digiti minimi

A

Action: abduction & flexion of little finger

Innervation: ulnar nerve

32
Q

Abductor pollicis brevis

A

Action: abduction of thumb

Innervation: median nerve

33
Q

Flexor pollicis brevis

A

Insertion: proximal phalanx of thumb

Action: flexion & adduction of thumb

Innervation: median & ulnar nerves

34
Q

Flexor digiti minimi brevis

A

Action: flexion at 5th metacarpophalangeal
joint

Innervatoin: ulnar nerve

35
Q

Opponens digiti minimi

A

Action: -flexion at metacarpophalangeal
joint
-brings digit into opposition with
thumb

Innervation: ulnar nerve

36
Q

Lubrical (4)

A

Action: -flexion at metacarpophalangeal
joint
-extension at proximal & distal
interphalangeal joints

Innervation: median nerve (#1 & #2)
                    ulnar nerve (#3 & #4)
37
Q

Dorsal interosseus (4)

A

Action: -abduction at metacarpophalangeal
joints of digits 2 & 4
-flexion at metacarpophalangeal
joints
-extension at interphalangeal joints

Innervation: ulnar nerve

38
Q

Palmar interosseus (4)

A

Action: -adduction at metacarpophalangeal
joints of digits 2, 4, & 5
-flexion at metacarpophalangeal
joints
-extension at interphalangeal joints

Innervation: ulnar nerve

39
Q

Abductor pollicis longus

A

Origin: proximal & dorsal surfaces of ulna
and radius

Insertion: lateral margin of 1st metacarpal
bone & trapezium

Action: abduction at joints of thumb & wrist

Innervation: deep radial nerve

40
Q

Extensor digitorum

A

Origin: lateral epicondyle of humerus

Insertion: posterior surfaces of phalanges,
digits 2-5

Action: extension at finger joints & wrist

Innervation: deep radial nerve

41
Q

Extensor pollicis brevis

A

Origin: -shaft of raidus, distal to the origin of
abductor pollicis longus
-interosseus membrane

Insertion: base of proximal phalanx of
thumb

Action: -extension at joints of thumb
-abduction at wrist

Innervation: deep radial nerve

42
Q

Extensor pollicis longus

A

Origin: posterior & lateral surfaces of ulna
and interosseus membrane

Insertion: base of distal phalanx of thumb

Action: -extension of thumb
-abduction at wrist

Innervation: deep radial nerve

43
Q

Extensor indicis

A

Origin: posterior surface of ulna &
interosseus membrane

Insertion: posterior surface of poximal
phalanx of index finger

Action: extension & adduction at joints of
index finger

Innervation: deep radial nerve

44
Q

Extensor digiti minimi

A

Origin: via tendon to lateral epicondyle of
humerus & from intermuscular septa

Insertion: posterior surface of proximal
phalanx of little finger

Action: -extension at joint of little finger
-extension of wrist

Innervation: deep radial nerve

45
Q

Flexor digitorum superficialis

A

Origin: -medial epicondyle of humerus
-coronoid process of ulna & adjacent
anterior surfaces of ulna & radius

Insertion: bases of middle phalanges of
digits 2-5

Action: flexion at proximal interphalangeal,
metacarpophalangeal, & wrist
joints

Innervation: median nerve

46
Q

Flexor digitorum profundus

A

Origin: -medial & posterior surfaces of ulna
-meidal surfaces of coronoid
process
-interosseus membrane

Insertion: bases of distal phalanges of digits
2-5

Action: -flexion at distal interphalangeal
joints and to a lesser degree the
proximal interphalangeal joints &
wrist

Innervation: median nerve & ulnar nerves

47
Q

Flexor pollicis longus

A

Origin: -anterior shaft of radius
-interossseus membrane

Insertion: base of distal phalanx of thumb

Action: flexion at joints of thumb

Innervation: median nerve

Anatomy (6 decks)

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