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MBBS Anatomy > Muscle Origin & Insertion - Upper Limb > Flashcards

Muscle Origin & Insertion - Upper Limb Flashcards

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1
Q

What is/are the origin(s) and insertion(s) of the Trapezius?

A

Origin: Occipital protuberance and spinous process C7-T12

Insertion: Lateral 1/3 of clavicle, acromion and spine of scapula

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2
Q

What is/are the origin(s) and insertion(s) of the Levator scapulae?

A

Origin: Transverse processes of C1-C4

Insertion: Upper medial border of the scapula

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3
Q

What is/are the origin(s) and insertion(s) of the Rhomboid minor?

A

Origin: Spinous professes of C7-T1

Insertion: medial edge of the scapula at the spine

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4
Q

What is/are the origin(s) and insertion(s) of the Rhomboid major?

A

Origin: Spinous processes of T2-T5

Insertion: medial edge of scapula below the spine

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5
Q

What is/are the origin(s) and insertion(s) of the Deltoid?

A

Origin: Clavicle and scapula (opposite trapezius)
Insertion: Deltoid tuberosity of the humerus

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6
Q

What is/are the origin(s) and insertion(s) of the Latissimus Doris?

A

Origin: spinous process of T6-L5, sacrum, iliac crest and ribs 10-12

Insertion: Floor of intertubercular sulcus

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7
Q

What is/are the origin(s) and insertion(s) of the Pectoralis major?

A

Origin: Has a clavicular head that attaches at the clavicle and a sternocostal head which attaches to the anterior surface of the sternum and the first 7 costal cartilages

Insertion: Lateral lip of the intertubucular sulcus

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8
Q

What is/are the origin(s) and insertion(s) of the pectoralis minor?

A

Origin: Anterior surface of ribs 3-5

Insertion: Coracoid process

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9
Q

Which are the “fan shaped” muscles of the shoulder?

A

Latissimus Doris and the pectoralis major

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10
Q

What are the muscles of the anterior shoulder?

A

Pectoralis minor, subclavius, coracobrachialis and serratus anterior

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11
Q

What is/are the origin(s) and insertion(s) of the subclavius?

A

Origin: First rib (at costal cartilage)

Insertion: Middle 1/3 of clavicle

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12
Q

What is/are the origin(s) and insertion(s) of the Coracobrachialis?

A

Origin: coracoid process

Insertion: medial aspect of the humerus

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13
Q

What is/are the origin(s) and insertion(s) of the serratus anterior?

A

Origin: lateral surfaces of ribs 1-8/9

Insertion: medial border of scapula (costal surface)

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14
Q

Wha are the muscles of the rotator cuff?

A

Supraspinatus, infraspinatus, teres minor

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15
Q

What is/are the origin(s) and insertion(s) of teres minor?

A

Origin: lateral infraspinous fossa

Insertion: inferior facet of the greater tubercle of the humerus

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16
Q

What is/are the origin(s) and insertion(s) of teres major?

A

Origin: posterior surface of scapula near inferior angle (inferior to the teres minor)

Insertion: Medial lip of the intertubercular sulcus

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17
Q

What is/are the origin(s) and insertion(s) of the supraspinatus?

A

Origin: supraspinous fossa of scapula

Insertion: superior facet of the greater tubercle of humerus

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18
Q

What is/are the origin(s) and insertion(s) of the infraspinatus?

A

Origin: infraspinous fossa of scapula

Insertion: Middle facet of the greater tubercle of the humerus

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19
Q

What are the biarticular muscles and what does this mean?

A

Triceps and biceps and this means that they cross 2 joints

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20
Q

What is/are the origin(s) and insertion(s) of the biceps brachii?

A

Origin: two heads, supra glenoid tubercle (long) and coracoid process (short)

Insertion: radial tuberosity of forearm

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21
Q

What is/are the origin(s) and insertion(s) of the brachialis?

A

Origin: anterior aspect of the humerus

Insertion: ulnar tuberosity and anterior surface of Coronado process of ulna

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22
Q

What are the muscles of the anterior arm?

A

Coracobrachialis

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23
Q

What are the muscles of the arm?

A

Biceps, brachialis

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24
Q

What are the muscles of the posterior arm?

25
What is/are the origin(s) and insertion(s) of the triceps?
Origin: infraglenoid tubercle of the scapula (long head), posterior surface of humerus superior to the radial groove (lateral head) and inferior to the radial groove (medial head) Insertion: olecranon of ulna
26
What muscles are in the superficial layer of the anterior forearm?
Flexor carpi ulnaris Palmaris longus (sometimes not present) Flexor carpi radialis Pronates teres
27
What is/are the origin(s) and insertion(s) of the flexor carpi ulnaris?
Origin: medial epicondyl of humerus and olecranon on the posterior border of ulna Insertion: pisiform, then to hamate and base of 5th metacarpal
28
What is/are the origin(s) and insertion(s) of the palmaris longus?
Origin: Medial epicondyle of humerus Insertion: continuous with palmar aponeurosis
29
What is/are the origin(s) and insertion(s) of the flexor carpi radialis?
Origin: Medial epicondyle of humerus Insertion: bases of metacarpals 2 and 3
30
What is/are the origin(s) and insertion(s) of the pronator teres?
Origin: medial epicondyle of humerus and coronoid process of ulnar
31
What muscles are part of the intermediate layer of the anterior forearm?
Flexor digitorum superficialis
32
What is/are the origin(s) and insertion(s) of the Flexor digitorum superficialis?
Origin: Medial epicondyle of humerus and coronoid process and oblique line of radius Insertion: Margins of middle phalanges (2-5)
33
What muscles make up the deep layer of the anterior forearm?
Flexor digitorum profundus, flexor policis longus and pronator quadratus
34
What is/are the origin(s) and insertion(s) of the flexor digitorum profundus?
Origin: anterior surfaces of ulna and the interosseus membrane Insertion: base of distal phalanges of digits 2-5
35
What is/are the origin(s) and insertion(s) of the flexor policis longus?
Origin: anterior surfaces of radius and the interosseus membrane Insertion: base of the distal phalanx of digit 1
36
What is/are the origin(s) and insertion(s) of the pronator quadratus?
Origin: anterior surface of distal part of ulna (only deep muscle that doesn’t originate off of the interosseus membrane) Insertion:anterolateral surface of distal radius
37
What muscles make up the superficial layer of the posterior forearm?
``` Brachioradialis Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Anconeus ```
38
What is/are the origin(s) and insertion(s) of the brachioradialis?
Origin: lateral supraepicondylar ridge Insertion: lateral surface of distal radius (does not cross wrist)
39
What is/are the origin(s) and insertion(s) of the extensor carpi radialis longus and brevis?
Origin: lateral supraepicondylar ridge (longus) and lateral epicondyle (longus and brevis) Insertion: base of metacarpal 2 (longus and brevis) and 3 (brevis)
40
What is/are the origin(s) and insertion(s) of the extensor digitorum?
Origin: lateral epicondyle Insertion: extensor hoods of digits 2-5
41
What is/are the origin(s) and insertion(s) of the extensor digiti minimi?
Origin: lateral epicondyle Insertion: extensor hood of digit 5
42
What is/are the origin(s) and insertion(s) of the extensor carpi ulnaris?
Origin: lateral epicondyle Insertion: base of metacarpal 5
43
What is/are the origin(s) and insertion(s) of the anconeus?
Origin: lateral epicondyle Insertion: olecranon and posterior surface of ulna
44
What muscles make up the deep layer of the posterior forearm?
``` Supinator Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus Extensor indicus ```
45
What is/are the origin(s) and insertion(s) of the supinator?
Origin: lateral epicondyle (superficial) and ulna (deep part) Insertion: oblique line of radius
46
What is/are the origin(s) and insertion(s) of the abductor pollicis longus?
Origin: posterior surfaces of radius and ulna and interosseus membrane Insertion: lateral side of metacarpal 1
47
What is/are the origin(s) and insertion(s) of the extensor pollicis longus and brevis?
Origin: posterior radius (brevis), posterior ulna (longus) and interosseus membrane (both) Insertion: first phalanx of digit 1 (brevis) and distal phalanx of digit 1 (longus)
48
What is/are the origin(s) and insertion(s) of the extensor indicus?
Origin: posterior ulna and interosseus membrane Insertion: extensor hood of digit 2
49
What are the anterior extrinsic muscles of the hand?
Flexor digitorum superficialis Flexor digitorum profundus
50
What are the posterior extrinsic muscles of the hand?
Extensor pollicis longus | Extensor pollicis brevis
51
What are the intrinsic hand muscles?
``` Palmaris brevis Thenar muscles Hypothenar muscles Adductor pollicis Lumbricals Interossei ```
52
What is/are the origin(s) and insertion(s) of the palmaris brevis?
Origin: palmaris brevis Insertion: dermis of medial margin of hand
53
What is/are the origin(s) and insertion(s) of the thenar muscles?
Origins: Flexor retinaculum, trapeziums and scaphoid Insertion: flexor and abductor insert at the base of the proximal phalanx and extensor hood (abductor pollicis brevis) Opponens inserts along the radial side of the first metacarpal
54
What is/are the origin(s) and insertion(s) of the hypothenar muscles?
Origins: Hook of hamate, flexor retinaculum (opponens digiti minimi and flexor digiti minimi brevis), pisiform (abductor digiti minimi) Insertion: Flexor and abductor insert at the base of the proximal phalanx and extensor hood Opponens inserts along the ulnar side of the fifth metacarpal
55
Which are the thenar muscles?
Opponens pollicis Flexor pollicis brevis Abductor pollicis brevis
56
Which are the hypothenar muscles?
Opponens digiti minimi Flexor digiti minimi brevis Abductor digiti minimi
57
What is/are the origin(s) and insertion(s) of the adductor pollicis?
Origin: transverse head from shaft of metacarpal 3, oblique head from capitate and bases of metacarpal 2 and 3 Insertion: base of proximal phalanx and extensor hood
58
What is/are the origin(s) and insertion(s) of the lumbricals?
Origin: tendon of the flexor digitorum profundus Insertion: extensor hoods
59
What is/are the origin(s) and insertion(s) of the interossei?
Origin: shaft of the metacarpals Insertion:extensor hoods and base of first phalanx

MBBS Anatomy (9 decks)

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