Actions, intrinsic hand

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11 Terms

1
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Action for abductor pollicis brevis

Thumb abduction at CMC and MCP
Helps in thumb opposition

2
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Action for flexor pollicis brevis

Thumb flexion at CMC and MCP
Helps in thumb opposition

3
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Action for opponens Pollicis

Opposes thumb at CMC

4
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Action for adductor pollicis

Adducts thumb at CMC and MCP

5
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Action for abductor digiti minimi

Little finger abduction at MCP

6
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Action for flexor digiti minimi

Little finger flexion at MCP

7
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Action for opponens digiti minimi

Little finger opposition at CMC

8
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Action for palmaris brevis

Tenses skin of hypothenar eminence

9
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Action for lumbricals 1-4

Flexion of MCP joints digits 2-5
Extension of PIP and DIP joints using extensor hood mechanism

10
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Action for palmar interossei

Adduction of MCP joints digits 2-5
Flexion of MCP joints

Extension of PIP and DIP joints via extensor hood mechanism of DDE

11
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Action for dorsal interossei

Abduction of MCP joints digits 2-5
Flexion of MCP joints

Extension of PIP and DIP joints via extensor hood mechanism of DDE