Palm of the Hand Muscles Flashcards
Adductor Pollicis Brevis
Origin
-Flexor rentinaculum and tubercles of scaphoid and trapezium
Adductor Pollicis Brevis
Insertion
-Lateral side of base of proximal phalanx of thumb
Adductor Pollicis Brevis
Innervation
-Recurrent branch of median nerve (C8, T1)
Adductor Pollicis Brevis
Action
- Abducts thumb
- Opposes thumb
Opponens Pollicis
Origin
-Flexor rentinaculum and tubercles of scaphoid and
trapezium
Opponens Pollicis
Insertion
-Lateral side of 1st metacarpal
Opponens Pollicis
Innervation
-Recurrent branch of median nerve (C8, T1)
Opponens Pollicis
Action
-Opposes thumb
Flexor Pollicis Brevis
Origin
-Flexor rentinaculum and tubercles of scaphoid and
trapezium
Flexor Pollicis Brevis
Insertion
-Lateral side of base of proximal phalanx of thumb
Flexor Pollicis Brevis
Innervation
-Superficial head: recurrent branch of median nerve
(C8, T1)
-Deep head: deep branch ofulnar nerve (C8, T1)
Flexor Pollicis Brevis
Action
-Flexes MCP of 1st digit (thumb)
Flexor Digiti Minimi Brevis
Origin
-Hook of hamate and flexor rentinaculum
Flexor Digiti Minimi Brevis
Innervation
-Medial side of base of proximal phalanx of 5th digit
Flexor Digiti Minimi Brevis
Insertion
-Deep branch of ulnar nerve (C8, T1)
Flexor Digiti Minimi Brevis
Action
-Flexes MCP of 5th digit
Abductor Digiti Minimi
Origin
-Pisiform
Abductor Digiti Minimi
Insertion
-Medial side of base of proximal phalanx of 5th digit
Abductor Digiti Minimi
Innervation
-Deep branch of ulnar nerve (C8, T1)