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Y Anatomy I > Muscles: Upper Limb > Flashcards

Muscles: Upper Limb Flashcards

1
Q

8

A

Antebrachial fascia and tendon of palmaris longus muscle

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2
Q

2

A

2 Bicipital aponeurosis

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3
Q

3

A

Brachioradialis muscle

origin: lat. supracondylar ridge humerus
insertion: radial styloid process
artery: radial reccurent artery
innervation: radial nerve
action: flexes elbow

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3
Q

28

A

28 Carpal tunnel (canalis carpi, probe)

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4
Q

4

A

Flexor carpi radialis muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: base of 2nd/3rd metacarpals
artery: radial artery
innervation: median nerve
action: flexion/abduction of wrist

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5
Q

6

A

6 Flexor digitorum superficialis muscle

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6
Q

7

A
  • *Median nerve**
  • only nerve to pass through carpal tunnel

innervates all of the flexors in the forearm except flexor carpi ulnaris and that part of flexor digitorum profundus that supplies the 2nd and 3rd digits

Pronator teres
Flexor carpi radialis
Palmaris longus

Flexor digitorum superficialis muscle

Flexor digitorum profundus (only the lateral half)
Flexor pollicis longus
Pronator quadratus

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7
Q

5

A

5 Radial artery

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7
Q

18

A

Palmaris longus muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: palmar aponeurosis
artery: ulnar artery
nerve: median nerve
action: flexes wrist

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8
Q

21 (tendon)

A

21 Tendon of flexor carpi ulnaris muscle

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9
Q

20

A

20 Ulnar artery

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10
Q

23

A

23 Abductor digiti minimi muscle

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11
Q

26

A

Brachialis muscle

Origin
anterior surface of the humerus, particularly the distal half
Insertion
coronoid process and the tuberosity of the ulna
Artery
radial rartery
Nerve
musculocutaneous nerve (C5, C6)
Actions

flexion at elbow joint

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12
Q

What are the deep flexors of the forearm in radioulnar order (based on origin)?

What are they all innervated by?

What artery supplies all of them?

A
  1. flexor pollicis longus
  2. flexor digitorum profundus
  3. pronator quadratus
  • median nerve (anterior interosseous branch)
  • anterior interosseous artery
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13
Q

7

A

extensor carpi ulnaris

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14
Q

19

A

Flexor carpi ulnaris muscle

origin:

  • humeral head: medial epicondyle humerus (comm. flex. tendon)
  • ulnar head: medial margin on olecranon

insertion: pisiform, hamulus, metacarpal V
artery: ulnar artery
innervation: ulnar nerve
action: flexion/adduction of wrist

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15
Q

33

A

33 Flexor digiti minimi brevis muscle

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16
Q

40

A

Flexor digitorum profundus muscle

origin: proximal 3/4 of anteromedial ulnar shaft, inteross. membrane, deep fascia
insertion: base of distal phalanges
artery: anterior interosseous artery
nerve: median nerve (ant. inteross. branch), ulnar nerve
action: flexes hand and interphal. joints

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17
Q

27

A

Flexor pollicis longus muscle

origin: middle 2/4 radial shaft and inteross. membrane
insertion: base of distal phalanx of thumb
artery: anterior interosseous artery
innervation: median nerve (ant. inteross. branch)
action: flexes thumb

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17
Q

30

A

Flexor digitorum superficialis muscle

origin: medial epicondyle humerus
insertion: anterior base of middle phalanges II-V
artery: ulnar artery
innervation: median nerve
action: flexes fingers (prox. interphal. joint)

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18
Q

17

(what part of the muscle)

A

17 Humeral head of pronator teres muscle

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19
Q

32

A

32 Opponens digiti minimi muscle

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20
Q

28

A

22 Palmaris brevis muscle

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21
Q

39

A

Pronator teres muscle

origin: medial epicondyle humerus (comm. flex. tendon)
insertion: middle lateral surface of radial shaft
artery: ulnar and radial arteries
innervation: median nerve
action: pronates forearm

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22
What are the superficial flexors in radioulnar order (based on their proximal ends)? What is their common origin? What nerve innervates all of them but one? What artery supplies all of them but one?
1. **Pronator teres** 2. **Flexor carpi radialis** 3. **Palmaris longus** 4. **Flexor carpi ulnaris** 5. **Flexor digitorum superficialis** - all originate from **common flexor tendon** which attaches to **medial epicondyle of humerus** - **median nerve** innervates all but FCU - **ulnar artery** supplies all but FCR
23
6
**Supinator muscle** posterior and deep, but can be visible from anterior point of view * origin:* supinator crest of ulna, lateral humeral epicondyle, radial collateral ligament * insertion*: radius, btwn radial tuberosity and attachment of pronator teres _deep branch of radial nerve_
24
38
38 Tendon of flexor carpi radialis muscle
25
29 | (more of a posterior muscle)
29 Triceps brachii muscle
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27
3
**Anconeus muscle** small & posterior, some consider to be a part of triceps brachii * origin:* lateral epicondyle of humerus * insertion*: proximal 1/4th ulna, lateral to olecranon _extension, tenses elbow joint_ _radial nerve_ _deep brachial artery_
27
16
16 Abductor pollicis longus muscle
28
12
12 Brachialis muscle
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15
**Extensor carpi radialis brevis muscle** ## Footnote origin: **lateral epicondyle** humerus (comm. ext. tendon) insertion: posterior base **3rd metacarpal** artery: **radial** artery innervation: **radial** nerve (deep branch) action: **extend/abduct hand** at wrist
30
14
14 Extensor carpi radialis longus muscle
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6
6 Extensor carpi ulnaris muscle
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8
8 Extensor digiti minimi muscle
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7
7 Extensor digitorum (communis) muscle
34
17
17 Extensor pollicis brevis muscle
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17
17 Extensor pollicis longus muscle
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1 | (septum)
1 Lateral intermuscular septum
36
6 | (deep)
6 Supinator muscle
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2 (tendon)
2 Tendon of triceps brachii muscle
37
1
1 Triceps brachii muscle
39
11
11 Abductor pollicis brevis muscle
40
25 coverings
25 Digital fibrous sheaths of tendons of flexor digitorum muscle
41
9
Third and fourth dorsal interosseous muscles
42
19
19 Extensor indicis muscle
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21
21 First dorsal interosseous muscle
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41
41 Lumbrical muscles
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12
12 Palmar aponeurosis
46
18
18 Tendon of extensor pollicis longus muscle
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19
19 Tendons of both extensor carpi radialis longus and extensor carpi radialis brevis muscles
48
9
9 Extensor retinaculum
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12
12 Intertendinous connections
50
10
10 Tendons of extensor digiti minimi muscle
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11
11 Tendons of extensor digitorum muscle
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13
13 Superficial head of flexor pollicis brevis muscle
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10
10 Tendons of extensor digitorum muscle (cut)
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10
10 Tendon of extensor pollicis brevis muscle
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43
43 Tendons of flexor digitorum profundus muscle having passed through the divided tendons of the flexor digitorum superficialis muscle
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34
34 Tendons of flexor digitorum superficialis muscle
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42
42 Tendons of flexor digitorum profundus muscle
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24
24 Transverse fasciculi of palmar aponeurosis
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63
63
What is the proper anatomical name of the "armpit" and what are its four walls??
**Axillary Fossa** * _medial_: serratus anterior * _lateral_: humerus + arm muscles * _anterior_: pectoralis major + minor * _posterior_: latissimus doris + teres major
63
What type of joint is the shoulder? What two bone features make it up? What movements does it allow?
- ball and socket - head of humerus and glenoid cavity of scapula movements: * **medial/lateral rotation** * **abduction/adduction** * **circumduction** (combo of abd/add + antflx/retflx) * **anteflexion/retroflexion**
65
13
**Pectoralis major muscle** origins: * clavicular head: **anteromedial clavicle** * sternocostal head: **anterior sternum. costal cartilages, external oblique aponeurosis** insertion: **intertubercular sulcus**, lateral lip artery: **pectoral branch of thoracoacromial artery** innervation: **lateral and medial pectoral nerves** action: **adducts/medially rotates humerus,** **draws scapula anterior/inferior**
66
What are the 4 muscles of the rotator cuff (viewed laterally, from front, counterclockwise to back) ? What is the rotator cuff's function?
1. **Subscapularis** 2. **Supraspinatus** 3. **Infraspinatus** 4. **Teres Minor** - function to keep humeral head in glenoid cavity and control medial and lateral humeral rotation
66
What is the bottom uncolored space called? What does it contain (numbers 4 and 5)? What are its borders (numbers 6, 7 and 8)?
**Triceps Hiatus** **-** contains **Radial Nerve** (4) and **Deep Brachial Artery** (5) Borders: * lateral: **Humerus** (6) * medial: **Long Head of Triceps** (7) * superior: **Teres Major** (8)
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68
18 | (not a muscle)
**Axillary artery**
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69
8
**Biceps brachii muscle** origins: * short head: **coracoid process** * long head: **supraglenoid tubercle** insertion: **radial tuberosity** artery: **brachial artery** innervation: **musculocutaneous nerve** action: **flexes elbow**, supinates forearm
70
16
**Tendon of biceps brachii muscle** ## Footnote insertion: **radial tuberosity**
71
26
**Tendon of short head of biceps bachii muscle** ## Footnote origin: **coracoid process** of scapula
72
17
**Bicipital aponeurosis** - broad aponeurosis of biceps brachii located in cubital fossa - separates superficial from deep structures in fossa
73
24
**Brachial artery and median nerve**
74
9
**Brachialis muscle** ## Footnote origin: **anterior humerus**, just below deltoid insertion insertion: **ulnar tuberosity** innervation: mostly **musculocutaneous nerve**, partly also radial nerve action: **flexes arm** at elbow joint
76
27
**Coracobrachialis muscle** ## Footnote origin: **coracoid process** of scapula insertion: **medial humerus** artery: **brachial artery** nerve: **musculocutaneous nerve** action: **adducts humerus**
77
10
**Brachialis**
78
entire colored portion
**Deltoid Muscle** origins: * scapular part: **spine of scapula** * acromial part: **acromion** * clavicular part: **anterosuperior lateral clavicle** insertion: **deltoid tuberosity** artery: **thoracoacromial, anterior and poster humeral circumflex arteries** innervation: **axillary nerve** actions: **shoulder abduction**, flexion and extension
80
1
**Acromial part of deltoid muscle** (central fibers) ## Footnote origin: **acromion** action: **shoulder abduction**
81
6
**Clavicular part of deltoid muscle** (anterior fibers) ## Footnote origin: **anterior border/superior surface of lateral 1/3 of clavicle** action: **shoulder abduction**, assists pec major in **shoulder flexion**
82
2
**Scapular part of deltoid muscle** (posterior fibers) ## Footnote origin: **spine of scapula**
83
7 What is it? What vein passes through it?
**Deltopectoral groove** - cephalic vein passes through
84
15
* *Lateral intermuscular septum** - connective tissue sheath separating anterior flexor compartment from posterior extensor compartment of upper arm
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28
**Distal biceps brachii muscle and its tendon** ## Footnote insertion: **radial tuberosity**
85
21
**Latissimus dorsi muscle** ## Footnote origin: **spinous processes T7-L5, thoracolumbar fascia, iliac crest, inferior 3-4 ribs, scapular inferior angle** insertion: floor of **intertubercular groove** of humerus artery: **thoracodorsal artery** innervation: **thoracodorsal nerve** action: **adducts, extends and internally rotates arm**
86
22
**Medial intermuscular septum** - connective tissue sheath that separates flexor/extensor compartments of upper arm between humerus and medial side of arm
87
**Rhomboid major muscle** ## Footnote origin: **spinous processes T2-5** insertion: **medial border** of scapula artery: **dorsal scapular artery** nerve: **dorsal scapular nerve** action: **retracts scapula**, **rotates scapula** to depress glenoid cavity
89
20
**Subscapularis muscle** ## Footnote origin: **subscapular fossa** insertion: **lesser tubercle** of humerus artery: **subscapular artery** innervation: **upper/lower subscapular nerves** action: **internal humeral rotation, shoulder stabilization**
91
29
**Teres major muscle** ## Footnote origin: **inferior angle** of scapula, posterior side insertion: **intertubercular sulcus**, medial lip artery: **subscapular** and **circumflex scapular** arteries innervation: **lower subscapular nerve** actions: **medial rotation of humerus**, **scapular protraction**, **depresses shoulder**
93
3
**Triceps brachii muscle** origins: * long head: **infraglenoid tubercle** * medial head: **below radial sulcus** * lateral head: **above radial sulcus** insertion: **olecranon process** artery: **deep brachial artery** innervations: * long head: **axial nerve** * other heads: **radial nerve** action: **extends forearm and shoulder** (long head only)
95
4
Tendon of triceps brachii muscle ## Footnote insertion: **olecranon process** (connects all 3 heads of triceps)
96
30
**Long head of triceps brachii muscle** ## Footnote origin: **infraglenoid tubercle**
97
19
**Medial head of triceps brachii muscle** ## Footnote origin: **below radial sulcus** insertion: **olecranon process** innervation: **radial nerve** action: **extends forearm** **31**
98
14 Flexor retinaculum 17 Capitate bone 18 Trapezium bone and trapezoid bone 19 Radial artery 20 Tendon of flexor muscles 21 First metacarpal bone 22 Median nerve 23 Thenar muscles 24 Hamate bone 25 Hypothenar muscles 26 Ulnar artery and nerve 27 Carpal tunnel (canalis carpi)
99
What is this distal colored muscle?
**Pronator Quadratus Muscle** ## Footnote origin: **medial anterior ulna** insertion: **lateral anterior radius** artery: **anterior inteross.** artery innervation: **median** nerve (ant. inteross. branch) actions: **pronates** forearm
100
What are the borders of the anatomical snuffbox? Its other name? Its contents?
lateral/radial border - tendons of **abductor pollicis longus** and **extensor pollicis brevis** medial/ulnar border - tendon of **extensor pollicis longus** - it is also known as the **foveola radialis** - the **radial artery** and **cephalic vein** run through it
101

Y Anatomy I (18 decks)

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