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CSS PA Anatomy Practical > upper limb COPY > Flashcards

upper limb COPY Flashcards

1
Q

Deltoid

A

Origin:

Lateral 1/3 anterior clavicle, lateral acromion, inferior edge of spine of scapula

Insertion:

Deltoid tuberosity of humerus

Action:

**Clavicular: flexes/medially rotates arm

Acromial: aBducts arm beyond initial 15° by supraspinatus

Spinal: extends/laterally rotates arm**

Innervation:

Axillary

Blood supply:

Posterior circumflex humeral artery, deltoid branch of thoraco-acromial artery

Shoulder

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2
Q

Infraspinatus

A

Insertion:

Infraspinous fossa of scapula/deep fascia

Origin:

Greater tubercle of humerus (middle facet)

Action:

Lateral rotation of arm (with teres minor)

Innervation:

Suprascapular Nerve

Blood supply:

Suprascapular Artery

Shoulder

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3
Q

Serratus Anterior

A

Insertion:

Lateral surfaces of upper 8-9 ribs

Origin:

Costal surface of medial border of scapula

Action:

Protracts/retracts scapula & holds against thoracic wall

Innervation

Long Thoracic

Blood supply:

Lateral Thoracic

Shoulder

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4
Q

Subscapularis

A

Insertion

Subscapular fossa

Origin:

Lesser tubercle of humerus

Action:

Medial rotation of arm at shoulder, aDduction, holds humeral head in glenoid cavity

Innervation

Upper/lower subscapular

Blood supply:

Subscapular, lateral thoracic

Shoulder

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5
Q

Supraspinatus

A

Origin: Supraspinous fossa/deep fascia

Insertion: Superior facet of greater tubercle of humerus

Action: Initiates arm aBduction (initial 15°), acts with rotator cuff muscles

Innervation: Suprascapular

Blood Supply: Suprascapular

Shoulder

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6
Q

Teres Major

A

O: Posterior surface of inferior angle of scapula

I: Medial lip of intertubercular sulcus of humerus

A: ADucts & medial rotation

IN: Lower subscapular

BS: Circumflex scapular

Shoulder

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7
Q

Teres Minor

A

O: Upper 2/3 of posterior surface of lateral border of scapula

I: Inferior facet of greater tubercle of humerus

A: Lateral rotation

IN: Axillary

BS: Circumflex scapular

Shoulder

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8
Q

Subclavis

A

O: Upper border of 1strib & its cartilage

I: Inferior surface of middle third of clavicle

A: Anchors & depresses clavicle

IN: Nerve to subclavius

BS: Clavicular branch of thoraco-acromial artery

Shoulder

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9
Q

Pectoralis Major

A

O: Sternal half of clavicle, sternum to 7thrib, cartilages of true rib

I: Lateral lip of intertubercular sulcus humerus

A: Flexes/aDducts arm, medial rotation

IN: Medial/lateral pectoral

BS: Pectoral branch of thoraco-acromial, perforating branches of internal thoracic

Pectoral region/axilla

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10
Q

Pectoralis Minor

A

O: Outer surface of upper margin of ribs 3-5

I: Coracoid process of scapula

A: Lowers lateral angle of scapula & protracts scapula

IN: Medial Pectoral

BS: Pectoral branch of thoraco-acromial & intercostal lateral thoracic

Pectoral region/axilla

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11
Q

Aconeus

A

O: Posterior surface of lateral epicondyle of humerus

I: Lateral surface of olecranon & posterior proximal ulna

A: Assist triceps in extending elbow, aBducts ulna in pronation

IN: Radial nerve (C5-T1)

BS: Deep brachial

Arm

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12
Q

Biceps Brachii

A

O: Long head: supraglenoid tubercle of scapula
Short head: tip of coracoid process of scapula

I: Radial tuberosity

A: Flexes & supinates forearm @ elbow

IN: Musculocutaneous (C5, C6)

BS: Muscular branches of brachial

Arm

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13
Q

Brachialis

A

O: Distal half of anterior surface of humerus

I: Coronoid process of tuberosity of ulna

A: Flexes forearm @ elbow

IN: Musculocutaneous nerve and radial nerve (C7)

BS: Radial recurrent, muscular branches of brachial artery

Arm

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14
Q

Coracobrachialis

A

O: Tip of coracoid process of scapula

I: Middle 1/3 medial surface of humerus

A: Flexes and aDducts at shoulder

IN: Musculocutaneous

BS: Muscular branches of brachial

Arm

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15
Q

Triceps Brachii

A

O: Long head: infraglenoid tubercle of scapula

Lateral head: upper half of posterior humerus

Medial head: distal 2/3 of medial & posterior humerus

I: Posterior surface of olecranon process of ulna

A: Extends forearm at elbow;
Long head: stabilizes head of aBducted humerus & extends & aDducts arm at shoulder

IN: Radial

BS: Branch of profundal brachii

Arm

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16
Q

Levator Scapulae

A

O: Posterior tubercles of transvers processes of C1-C4

I: Medial border of scapula (superior angle to spine)

A: Elevate scapula medially, inferiorly, rotates glenoid cavity

IN: Ventral rami of C3-C4 and dorsal scapular nerve

BS: Dorsal scapular, transverse cervical, ascending cervical

Superficial Back

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17
Q

Rhomboid Major

A

O: Spinous process T2-T5

I: Medial border scapula, BELOW base of spine

A: Fixes scapula to thoracic wall, retract/rotate scapula to depress glenoid cavity

IN: Dorsal scapular

BS: Dorsal scapular
-OR-
Deep branch of TCA, dorsal perforating branches of upper 5-6 posterior intercostal

Superficial back

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18
Q

Rhomboid Minor

A

O: Ligamentum nuchae spines of C7 & T1 vertebrae

I: Medial border of scapula AT the scapular spine

A: Fixes scapula to thoracic wall, retract/rotate scapula to depress glenoid cavity

IN: Dorsal scapular

BS: Dorsal scapular
-OR-
Deep branch of TCA, dorsal perforating branches of upper 5-6 posterior intercostal

Superficial back

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19
Q

Trapezius

A

O: Superior nuchal line, external occipital protuberance, nuchal ligament, spinous processes of C7-T12

I: Lateral 1/3 clavicle, acromion, & scapular spine

A: Elevates, retracts, & rotates scapula; lower fibers depress scapula

IN: Accessory nerve (CN XI)

BS: Transverse cervical, dorsal perforating branches of posterior intercostal

Superficial back

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20
Q

Abductor pollicis longus

A

O: Posterior surface of ulna, radius, and interosseous membrane

I: Base of 1stmetacarpal

A: Abducts & extends thumb at carpometacarpal joint

IN: Radial nerve (posterior interosseous)

BS: Posterior Interosseous artery

Posterior Forearm

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21
Q

Brachioradialis

A

O: Proximal 2/3 of lateral supracondylar ridge of humerus

I: Lateral side of distal end of radius

A: Weak flexion of forearm when forearm is midpronated

IN: Radial Nerve

BS: Radial Recurrent Artery

Posterior Forearm

22
Q

Extensor carpi radialis brevis

A

O: Lateral epicondyle of humerus

I: Dorsal base-3rdmetacarpal & slip to2ndmetacarpal

A: Extends/aBducts hand @ wrist

IN: Radial Nerve (Deep Branch)

BS: Radial Artery, Radial Recurrent artery

Posterior Forearm

23
Q

Extensor carpi radialis longus

A

O:Distal 3rdof lateral supracondylar ridge of humerus

I: Dorsal base of2ndmetacarpal & slip to3rdMetacarpal

A: Extends/aBducts hand @ wrist

IN: Radial Nerve

BS: Radial artery, radial recurrent artery

Posterior Forearm

24
Q

Extensor carpi ulnaris

A

O: Lateral epicondyle of humerus & posterior border of ulna

I: Dorsal base of 5thmetacarpal

A: Extends/aBducts hand at wrist

IN: Radial Nerve (posterior interosseous)

BS: Posterior interosseous artery

Posterior Forearm

25
Extensor digiti minimi
O: Lateral epicondyle of humerus I: Extensor expansion of 5thdigit A: Extends 5thdigit IN:Radial Nerve (posterior interosseous) BS:Posterior interosseous artery Posterior Forearm
26
Extensor digitorum
O: Lateral epicondyle of humerus I : Extensor expansion of medial 4 digits A: Extends medial 4 digits, assists in wrist extension IN: Radial Nerve (posterior interosseous) BS: Posterior interosseous artery Posterior Forearm
27
Extensor indicis
Origin: Posterior surface of ulna & interosseous membrane Insertion: Extensor expansion of 2nddigit Action: Extends 2nddigit & helps extend hand at wrist Innervation: Radial Nerve (posterior interosseous) Blood supply: Posterior interosseous artery Posterior Forearm
28
Extensor pollicis brevis
Origin: Posterior surface of radius & interosseous membrane Insertion: Dorsal base of proximal phalanx of thumb Action: Extends distal phalanx of thumb at carpometacarpal joint Innervation: Radial Nerve (posterior interosseous) Blood supply: Posterior interosseous artery Posterior Forearm
29
Extensor pollicis longus
Origin: Posterior surface of middle 1/3 ulna, interosseous membrane Insertion: Dorsal base of distal phalanx of thumb Action: Extends distal phalanx of thumb at interphalangeal & metacarpophalangeal joints Innervation: Radial Nerve (posterior interosseous) Blood supply: Posterior interosseous artery Posterior Forearm
30
Supinator
Origin: Lateral epicondyle of humerus, supinator crest of ulna Insertion: Lateral, posterior & anterior surfaces of proximal 1/3 of radius Action: Supinates forearm Innervation: Radial Nerve (deep branch) Blood supply: Radial recurrent artery, posterior interosseous arteries Posterior Forearm
31
Flexor carpi radialis
Origin: Medial epicondyle of humerus Insertion: Base of 2ndmetacarpal Action: Flexes/aBducts at wrist Innervation: Median nerve Blood supply: Radial artery Anterior Forearm
32
Flexor carpi ulnaris
**Origin: Humeral head: medial epicondyle of humerus Ulnar head: olecranon & posterior border of ulna** Insertion: Pisiform bone, hook of hamate, base of 5thmetacarpal Action: Flexes/aDducts hand at wrist Innervation: Ulnar Nerve Blood supply: Posterior ulnar recurrent artery Anterior Forearm
33
Flexor digitorum profundus
Origin: Medial & anterior surface of proximal ¾ of ulna & interosseous membrane Insertion: Palmar base of distal phalanges of medial 4 digits Action: Flexes distal phalanges of 4 digits, assists with flexion of hand @ wrist. Innervation: Medial part: ulnar nerve Lateral part: median nerve Blood supply: Anterior interosseous artery, muscular branches of ulnar artery Anterior Forearm
34
Flexor digitorum superficialis
Origin: Humero-ulnar head: medial epicondyle of humerus & coronoid process of ulna Radial head: Superior half of anterior radius Insertion: Bodies of middle phalanges of medial 4 digits Action: Flexes middle & proximal phalanges of medial 4 digits, flexes hand at wrist Innervation: Median nerve Blood Supply: Ulnar & radial arteries Anterior Forearm
35
Flexor pollicis longus
Origin: Anterior surface of radius & interosseous membrane Insertion: Palmar base of distal phalanx of thumb Action: Flexes phalanges of thumb Innervation: Median nerve (anterior interosseous) Blood supply: Anterior interosseous artery Anterior Forearm
36
Palmaris Longus
Origin: Medial epicondyle of humerus Insetion: Distal half of flexor retinaculum & palmar aponeurosis Action: Flexes hand @ wrist & tenses palmar aponeurosis Innervation: Medial nerve Blood supply: Posterior ulnar recurrent artery Anterior forearm
37
Pronator Quadratus
Origin: Distal fourth of anterior ulna Insertion: Distal fourth of anterior radius Action: Pronates forearm Innervation: Median nerve (anterior interosseous) Blood supply: Anterior interosseous artery Anterior Forearm
38
Pronator teres
Origin: 2 heads: medial epicondyle of humerus & coronoid process of ulna Insertion: Midway along lateral surface of radius Action: Pronates forearm & assists with elbow flexion Innervation: Median nerve Blood Supply: Anterior ulnar recurrent artery Anterior Forearm
39
Abductor digiti minimi
Origin: Pisiform bone & tendon of flexor carpi ulnaris Insertion: Medial side of base of proximal phalanx of little finger (5thdigit) Action: aBducts little finger Innervation: Ulnar nerve (deep branch) Blood supply: Deep palmar branch of ulnar artery Hand
40
ABductor pollicis brevis
Origin: Flexor retinaculum, tubercles of scaphoid and trapezium Insertion: Lateral side of base of phalanx of thumb Action: aBducts thumb Innervation: Median nerve (recurrent branch) Blood Supply: Superficial palmar branch of radial artery Hand
41
Adductor pollicis
Origin: Oblique head: bases of 2nd& 3rdmetacarpals & capitate & adjacent Transverse head: anterior surface of 3rdmetacarpal Insertion: Medial side of base of proximal phalanx of thumb Action: aDducts thumb Innervation: Ulnar nerve (deep branch) Blood supply: Deep palmar arch Hand
42
Dorsal interosseous muscles
Origin: Adjacent sides of two metacarpal bones Insertion: Base of proximal phalanges, extensor expansion of digits 2-4 Action: aBducts digits from axial line of hand (3rddigit); flexes digits at metacarpophalangeal joint & extend interphalangeal joints Innervation: Ulnar nerve (deep branch) Blood supply: Deep palmar arch Hand
43
Flexor digiti minimi brevis
Origin: Flexor retinaculum & hook of hamate bone Insertion: Medial side of base of proximal phalanx of little finger Action: Flexes proximal phalanx of little finger Innervation: Ulnar nerve (deep branch) Blood Supply: Deep palmar branch of ulnar artery Hand
44
Flexor pollicis brevis
Origin: Flexor retinaculum & tubercle of trapezium Insertion: Lateral side of base of proximal phalanx of thumb Action: Flexes proximal phalanx of thumb Innervation: Median nerve (recurrent branch) Blood supply: Superficial palmar branch of radial artery Hand
45
Lumbrical (1st&2nd)
Origin: Lateral 2 tendons of flexor digitorum profundus Insertion: Lateral sides of extensor expansion of digits 2 & 3 Action: Extends digits at interphalangeal joints, flex metacarpophalangeal joints Innervation: Median nerve (digital branches) Blood supply: Superficial & deep palmar arches Hand
46
Lumbrical (3rd& 4th)
**Origin**: Medial 3 tendons of flexor digitorum profundus **Insertion**: Lateral sides of extensor expansion of digits 4&5 **Action**: Extends digits at interphalangeal joints, flex metacarpophalangeal joints **Innervation**: Ulnar Nerve (deep branch) **Blood supply:** Superficial & deep palmar arches Hand
47
Opponens digiti minimi
**Origin**: Flexor retinaculum &hook of hamate bone **Insertion**: Palmar surface of 5thmetacarpal **Action**: Draws 5thmetacarpal anteriorly & rotates it to face thumb **Innervation**: Ulnar Nerve (deep branch) **Blood supply:** Deep palmar branch of ulnar artery Hand
48
Opponens pollicis
**Origin**: Flexor retinaculum & tubercle of trapezium **Insertion**: Lateral side of 1stmetacarpal **Action**: Draws 1stmetacarpal forward & rotates medially **Innervation**: Median nerve (Recurrent branch) **Blood supply**: Superficial palmar branch of radial artery Hand
49
Palmar interosseous muscles
**Origin**: Sides of metacarpals 2,4, &5 **Insertion**: Bases of proximal phalanx & extensor expansion of digits 2,4, &5 **Action**: aDducts digits toward axial line of hand (3rddigit); flexes digits @ metacarpophalangeal joint & extends interphalangeal joints **Innervation**: Ulnar nerve (deep branch) **Blood supply:** Deep palmar arch Hand
50
Palmaris brevis
**Origin**: Palmar aponeurosis & flexor retinaculum **Insertion:** Skin of medial border of palm **Action**: Deepens hollow of hand, assists grip **Innervation**: Superficial palmar branch of ulnar nerve **Blood Supply:** Superficial palmar arch Hand
51

CSS PA Anatomy Practical (2 decks)

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