Muscles of Hand (Dorsal/Palmar) Flashcards
Palmar Interosseus/Palmar Interossei (Origin & Insertion)
O: Diaphysis of Mc II, IV, & V
I: Proximal phalanges of dig II, IV, & V & extensor expansions
Palmar Interosseus/Palmar Interossei (Actions)
Adduct digit II, IV, & V
Flex McP joints & extend IP joints
Palmar Interosseus/Palmar Interossei (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Adductor Pollicis (Origin & Insertion)
O: Along Mc II diaphysis & adjacent carpals
I: Base of prox phalanx of pollex
Adductor Pollicis (Actions)
Adducts pollex
Helps oppose pollex
Adductor Pollicis (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Lumbricals (Origin & Insertion)
O: Distal tendon of Flexor digitorum profundus
I: Extensor expansions of dig II-V
Lumbricals (Actions)
Flex McP joints of digits II-V
Extend IP joints of digits II-V
Lumbricals (Nerve & Insertion)
N: Median & Ulnar Nn
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Dorsal Interosseus/Dorsal Interossei (Origin & Insertion)
O: Adjacent Mc I-V
I: Proximal phalanges of dig II-IV & extensor exspansions
Dorsal Interosseus/Dorsal Interossei (Actions)
Abducts dig II-IV,
Flex McP joints & extend IP joints
Dorsal Interosseus/Dorsal Interossei (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Opponens Digiti Minimi (Origin & Insertion)
O: Flexor retinaculum & hook of hamate
I: Along Mc V diaphysis
Opponens Digiti Minimi (Actions)
Opposes dig V
Opponens Digiti Minimi (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Abductor Digiti Minimi (Origin & Insertion)
O: Pisiform
I: Base of proximal phalanx of dig V
Abductor Digiti Minimi (Actions)
Abducts & flexes dig V
Abductor Digiti Minimi (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Flexor Pollicis Brevis (Origin & Insertion)
O: Flexor retinaculum, scaphoid, & trapezium
I: Basal sides of proximal phalanx of pollex
Flexor Pollicis Brevis (Actions)
Flexes pollex
Flexor Pollicis Brevis (Nerve & Insertion)
N: Recurrent branch of median N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Opponens Pollicis (Origin & Insertion)
O: Flexor retinaculum, scaphoid, & trapezium
I: Length of Mc I diaphysis
Opponens Pollicis (Actions)
Opposes pollex
Oppoens Pollicis (Nerve & Insertions)
N: Recurrent branch of median N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Extensor Pollicis Brevis (Origin & Insertion)
O: Distal post radius & interosseus membrane
I: Base of proximal phalanx of pollex
Extensor Pollicis Brevis (Actions)
Extends pollex
Extensor Pollicis Brevis (Nerve & Insertion)
N: Deep radial N
A: Post interosseus A
Palmaris Brevis (Origin & Insertion)
O: Ulnar side of flexor retinaculum/palmar aponeunrosis
I: Ulnar side integument of hypothenar region
Palmaris Brevis (Actions)
Pulls the lat hypothenar skin medially
Palmaris Brevis (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Flexor Digiti Minimi (Origin & Insertion)
O: Flexor retinaculum & hook of hamate
I: Base of proximal phalanx of dig V
Flexor Digiti Minimi (Actions)
Flexes dig V
Flexor Digiti Minimi (Nerve & Artery)
N: Ulnar N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
Abductor Pollicis Brevis (Origin & Insertion)
O: Flexor retinaculum, scaphoid, & trapezum
I: Lat base of prox phalanx of pollex
Abductor Pollicis Brevis (Actions)
Abducts & flexes pollex
Helps oppose pollex
Abductor Pollicis Brevis (Nerve & Artery)
N: Recurrent branch of median N
A: Superficial & deep arterial arches, Mc, & palmar digital Aa
