Thenar Muscles

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Last updated 10:17 PM on 4/27/26
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17 Terms

1
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Opponens pollicis origin

Flex ret, tubercles of scaphoid, trapezium

2
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Opponens pollicis insertion

Lat side of 1st metacarpal

3
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Opponens pollicis innervation

Median nerve

4
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Opponens pollicis action

Oppose thumb

5
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Abductor pollicis brevis origin

Flex ret, tubercles of scaphoid, trapezium

6
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Abductor pollicis brevis insertion

Base of prox phalanx of thumb

7
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Abductor pollicis brevis innervation

Median nerve

8
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Abductor pollicis brevis action

Abduct thumb

9
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Flexor pollicis brevis origin

Flex ret, tubercles of scaphoid, trapezium

10
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Flexor pollicis brevis insertion

Base of prox phalanx of thumb

11
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Flexor pollicis brevis innervation

Median nerve

12
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Flexor pollicis brevis action

Flexes thumb

13
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Adductor pollicis oblique head origin

Bases of metacarpals 2/3, capitate

14
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Adductor pollicis transverse head origin

Shaft of metacarpal 3

15
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Adductor pollicis insertion

Medial side of base of prox phalanx of thumb

16
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Adductor pollicis innervation

Ulnar nerve

17
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Adductor pollicis action

Adduct thumb