Muscles: Upper Limb Flashcards Preview

Y Anatomy I > Muscles: Upper Limb > Flashcards

Flashcards in Muscles: Upper Limb Deck (101)
Loading flashcards...
1

8

Antebrachial fascia and tendon of palmaris longus muscle
 

2

2

2 Bicipital aponeurosis
 

3

3

Brachioradialis muscle
 

origin: lat. supracondylar ridge humerus

insertion: radial styloid process

artery: radial reccurent artery

innervation: radial nerve

action: flexes elbow

3

28

28 Carpal tunnel (canalis carpi, probe)
 

4

4

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
 

5

6

6 Flexor digitorum superficialis muscle
 

6

7

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

7

5

5 Radial artery
 

7

18

Palmaris longus muscle

origin: medial epicondyle humerus (comm. flex. tendon)

insertion: palmar aponeurosis

artery: ulnar artery

nerve: median nerve

action: flexes wrist

8

21 (tendon)

21 Tendon of flexor carpi ulnaris muscle
 

9

20

20 Ulnar artery
 

10

23

23 Abductor digiti minimi muscle
 

11

26

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

12

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?

  1. flexor pollicis longus
  2. flexor digitorum profundus
  3. pronator quadratus

- median nerve (anterior interosseous branch)

- anterior interosseous artery

13

7

extensor carpi ulnaris

14

19

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
 

15

33

33 Flexor digiti minimi brevis muscle

16

40

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

17

27

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
 

17

30 

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)
 

18

17

(what part of the muscle)

17 Humeral head of pronator teres muscle
 

19

32

32 Opponens digiti minimi muscle
 

20

28

22 Palmaris brevis muscle

21

39

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

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
 

26

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