Interosseous Muscles Of Hand Flashcards
1
Q
What are the interosseous muscles of hand? (2)
A
Dorsal interossei and palmar interossei
2
Q
What are they both innervated by?
A
Ulnar nerve
3
Q
Origin of dorsal interossei
A
Lateral and medial surfaces of metacarpals
4
Q
Insertion of dorsal interossei
A
Extensor hood and proximal phalanx of each finger
5
Q
Action of dorsal interossei
A
Abduction of digits, assists flexion at MCPJ + extension of IPJ
6
Q
Origin of palmar interossei
A
Medial or lateral surface of a metacarpal
7
Q
Insertion of palmar interossei
A
Extensor hood and proximal phalanx
8
Q
Action of palmar interossei
A
Adduction of digits, assists flexion at MCPJ + extension at IPJ
