Set 3 Flashcards
Abductor Pollicis Longus
Innervation
Radial (PIN) (C7,8)
Abductor Pollicis Longus
Primary Open Action
Abduction of CMC joint of thumb
Abductor Pollicis Longus
Secondary Open Action
- Thumb extension
- Wrist radial deviation
- Helps prevent ulnar deviation during forceful grasping
Abductor Pollicis Brevis
Innervation
Motor Recurrent br. of Median (C8T1)
Abductor Pollicis Brevis
Primary Open Action
Abduction of thumb at MP and CMC joint
Abduction Pollicis Brevis
Secondary Open Action
Assists in thumb opposition
Adductor Pollicis
Innervation
Ulnar (deep) (C8T1)
Adductor Pollicis
Primary Open Action
Adduction of CMC joint of thumb
Opponens Pollicis
Innervation
Motor Recurrent br. of Median (C8T1)
Opponens Pollicis
Primary Open Action
Opposition of thumb
Opponens Digiti Minimi
Innervation
Ulnar (deep) (C8T1)
Opponens Digiti Minimi
Primary Open Action
Opposition of little finger
Flexor Pollicis Longus
Innervation
AIN of Median (C8T1)
Flexor Pollicis Longus
Primary Open Action
Flexes IP of thumb
Flexor Pollicis Longus
Secondary Open Action
- Flexion of MP and CMC joints of thumb
- Wrist flexion (accessory)
Flexor Pollicis Brevis
Innervation
Superficial head:
-Motor Recurrent br. of Median
Deep Head:
-Ulnar
(C8T1)
Flexor Pollicis Brevis
Primary Open Action
Flexion of the MP joint of thumb
Flexor Pollicis Brevis
Secondary Open Action
Extension of the IP joint of thumb
Extensor Pollicis Longus
Innervation
Radial (PIN) (C7,8)
Extensor Pollicis Longus
Primary Open Action
Extension of thumb at IP, MP, and CMC joints
Extensor Pollicis Longus
Secondary Open Action
- Thumb repositioning
- Helps prevent ulnar deviation during forceful grasping
Extensor Pollicis Brevis
Innervation
Radial (PIN) (C7,8)
Extensor Pollicis Brevis
Primary Open Action
Extension of MP joint of thumb
Extensor Pollicis Brevis
Secondary Open Action
Helps prevent ulnar deviation during forceful grasping
Extensor Digitorum
Innervation
Radial (PIN) (C7,8)
Extensor Digitorum
Primary Open Action
Ext, hyperext, of finger MPs 2-5
Extensor Digitorum
Secondary Open Action
- Ext of IPs if intrinsic flexion pull on MPs
- Accessory to wrist extension
Extensor Indices
Innervation
Radial (PIN) (C7,8)
Extensor Indices
Primary Open Action
Ext, hyperext,of MP of index finger
Extensor Indices
Secondary Open Action
- Ext. of IPs if intrinsic flexion pull on MP
- Accessory to wrist ext.
Extensor Digiti Minimi
Innervation
Radial (PIN) (C7,8)
Extensor Digiti Minimi
Primary Open Action
Ext, hyperext, of MP of little finger
Extensor Digiti Minimi
Secondary Open Action
- Ext of IPs if intrinsic flexion pull on MP
- Accessory to wrist ext.
DI (hand)
Innervation
Ulnar (deep) (C8T1)
DI (hand)
Primary Open Action
1- Radial deviation of index
2- Radial deviation of middle
3- Ulnar deviation of middle
4- Ulnar deviation of ring
DI (hand)
Secondary Open Action
- Extends IPs of finger 2-4 when MPs extended
- Assists in MP flexion, fingers 2-4
PI (hand)
Innervation
Ulnar (deep) (C8T1)
PI (hand)
Primary Open Action
1- Ulnar deviation of index
2- Radial deviation of ring
3- Radial deviation of little
PI (hand)
Secondary Open Action
- Extends IPs of fingers 2, 4, 5 when MPs extended
- Assists in MP flexion of fingers 2, 4, 5
Abductor Digiti Minimi
Innervation
Ulnar (deep) (C8T1)
Abductor Digiti Minimi
Primary Open Action
Abduction of MP joint of little finger
Abductor Digiti Minimi
Secondary Open Action
- Flexion of MP joint of little finger
- Assists in little finger opposition
Flexor Digiti MInimi Brevis
Innervation
Ulnar (deep) (C8T1)
Flexor Digiti Minimi Brevis
Primary Open Action
Flexion of MP joint of little finger
Flexor Digiti Minimi Brevis
Secondary Open Action
Assists in little finger opposition