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1 M. abductor pollicis brevis. o: Scaphoid bone and flexor retinaculum. i: Lateral sesamoid bone and, radially, the proximal phalanx of the thumb. A: Abduction and flexion of the thumb. I: Median nerve. B

2 M. flexor pollicis brevis. o: Carpal bones, base of 1st metacarpal and flexor retinaculum. i: Lateral sesamoid bone, radially aspect of proximal phalanxof thumb. A: Adductsand flexes thumb. B

3 Superficial head of flexor pollicis brevis. Caput superficiale. The portion situated on the tendon of the flexor pollicis longus and innervated by the median nerve. B

4 Deep head of flexor pollicis brevis. Caput pro-fundum. The portion situated below the tendon of the flexor pollicis longus and innervated by the ulnar nerve. B

5 M. opponens pollicis. o: Trapezium and flexor ret-inaculum. i: First metacarpal. A: Adduction and opposition of thumb. I: Median nerve. B

6 M. adductor pollicis. o: Capitate, radiate carpal ligament, metacarpal bone 3. i: Medial sesamoid bone, ulnar aspect of base of proximal phalanx of thumb. A: Adduction and opposition of thumb. I: Ulnar nerve. B

7 Oblique head of adductor pollicis. Caput ob-liquum. The portion arising from the capitate and radiate carpal ligament. B

8 Transverse head of adductor pollicis. Caput transversum. The portion originating from the 3rd metcarpal bone. B

9 M. abductor digiti minimi. o: Pisoformand flexor retinaculum. i: Base of proximal phalanx of little finger and dorsal aponeurosis. A: Abduction, flexion and extension of the little finger. I. Ulnar nerve. B

10 M. flexor digiti minimi brevis. o: Hook of hamate and flexor retinaculum. i: Base of proximal phalanx of little finger. A: Flexion of finger at the metacarpophalangeal joint. I: Ulnar nerve. B

11 M. opponens digiti minimi. o: Hook of hamulus and flexor retinaculum. i: Head and shaft of 5th metacarpal. A: Draws the little finger toward the palm of the hand. I: Ulnar nerve. B

12 Mm. lumbricales. o: Tendons of flexor digitorum profundus. i: Dorsal aponeuroses of fingers 2-5. A: Flexion of finger at the metacarpophalangeal joints, extension at the interphalangeal joints. I: Ulnar and median nerves. B C

13 Mm. interossei dorsales. o: Arises by two heads from the metacarpals. i: Dorsal aponeurosis of fingers 2-4. A: Spreading of fingers 2-4 away from axisofmiddlefinger,radialandulnarabductionof middle finger, flexion of finger at the metacar-pophalangeal joint and extension of the inter-phalangeal joints. I. Ulnar nerve. C D E

14 Mm. interossei palmares. o: Metacarpal bones 2, 4 and 5. i: Dorsal aponeuroses of fingers 2,4 and 5. A: Adduction of index, ring and little fingers toward the middle finger, flexion of the metacar-pophalangeal joints, extension of the inter-phalangeal joints. I: Ulnar nerve. B D

15 Axillary fascia. Fascia axillaris. Situated on the adipose body of the axilla. It unites the lateral mar-ginsofthepectoralandlatissimusdorsimuscles.G

16 Deltoid fascia. Fascia deltoidea. Strongly fused investing fascia of the deltoid muscle.

17 Brachial fascia. Fascie brachii (brachialis). Fascia enclosing the upper arm muscles. F

18 Medial intermuscular septum of the arm. Septum intermusculare brachii mediale. Tendinous sheet for muscle origin between the medial margin of the humerus and the brachial fascia. F

19 Lateral intermuscular septum of the arm. Septum intermusculare brachii laterale. Tendinous sheet for muscle attachment between the lateral margin of the humerus and the brachial fascia. F

20 Antebrachial fascia. Fascia antebrachii. Fascia enveloping the forearm muscles. A

21 Fascia of the dorsum of the hand. Fascia dorsalis manus.Fasciasituatedonthedorsaltendonsofthe hand. E

22 Extensor retinaculum. Retinaculum extensorum [[lig. carpi dors.]]. Transverse fascial fibers over the 6 conduction canals of the 10 extensor tendons. E

23 Superficial transverse metacarpal ligament. Lig. metacarpale transversum superficiale. Transverse reinforcement of the palmar fascia of the hand at the level of the heads of the metacarpals. A

24 Palmar aponeurosis. Aponeurosis palmaris. Membranous expansion of the tendon of the palmaris longus muscle. A

25 Transverse fasciculi. Fasciculi transversi. Transversely oriented fibrous bundles of the palmar aponeurosis. A

26 Flexor retinaculum. Retinaculum flexorum [[lig. carpi transversum]]. Stout fibrous band between the scaphoid, trapezoid, pisiform and hamate bones. It binds the flexor tendons. B

27 Fibrous sheaths of fingers. Vaginae fibrosae digi-torum manus. Fibrous synovial tunnel for the digital flexor tendons. B

28 Annular part of fibrous sheath. Pars anularis vaginae fibrosae. Very compact circular fibers of the fibrous sheath located between the joints. B

29 Cruciate part of fibrous sheath. Pars cruci-formis vaginae fibrosae. Crossed fibers that reinforce the joints. B

30 Synovial sheaths of the fingers. Vaginae synoviales digitorum manus. Tendon sheaths of the digital flexor tendons.

31 Vincula tendinum. Connective tissue fasciculi (mesotendons) transporting vessels to the tendons. C

32 Vinculum longum. Longer fasciculus at the level of the proximal phalanx. C

33 Vinculum breve. Shorter fasciculus near the insertions of the tendons. C

34 Chiasmatendinum.Crossingofthetendonsofthe flexor digitorum superficialis and profundus. C

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