Term
| Hand Anatomy - Limited material - mostly from slides |
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Definition
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Term
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Definition
Venapuncture
Cutaneous veins are Cephalic (radial side) and Basilic (Ulnar side) |
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Term
| Sensation to dorsum of hand => ? |
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Definition
| Radial Nerve (radial side) and Ulnar nerve (ulnar side) |
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Term
| These 2 nerves supply the extrinsic and intrinsic muscles of hand |
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Definition
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Term
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Definition
Median nerve (Thumb + 2.5)
Ulnar nerve (pinky + half of ring finger) |
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Term
| The arterial supply of the hand and digits |
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Definition
| Radial and Ulnar Arteries |
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Term
| Articulation b/w wrist and hand proper bone |
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Definition
CarpoMetacarpal joints
Carpi = wrist
metacarpal = bone from wrist to knuckles.
Thumb Carpometacarpal joint is the only moveable |
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Term
| Thumb vs. finger phalanges |
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Definition
Thumb has 2 - proximal and distal
Each finger has 3 - P, Middle, D |
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Term
| PIP and DIP joints are ...joints and allow for ......and ......... of digits |
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Definition
hinge joints
flexion/extension |
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Term
| MCP joints are .....joints and allow for these 4 motions |
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Definition
Condyloid joints (knuckles)
Flexion/Extension and Abduction/Adduction |
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Term
| 1st Carpometacarpal joint is at the base of the thumb and is a .....joint that allow for thumbs' ..... |
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Definition
Saddle joint b/w Trapezium and Base of 1st metacarpal (knuckle)
Opposition |
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Term
| Thenar and Hypothenar eminences |
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Definition
Thenar - lateral to thumb, intrinsic thumb muscles
Hypothenar - medial to pinky, intrinsic pinky muscles |
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Term
| Extrinsic vs Intrinsic muscles of hand |
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Definition
Extrinsic - muscles of hand that came from forearm
Intrinsic - muscles of hand that originated from hand |
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Term
| Extrinsic Flexor muscles of Hand |
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Definition
Flexors:
F. Digitorum Superficialis
F. Digitorum Profundus
F. Pollicis Longus |
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Term
| Extrinsic Extensor muscles |
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Definition
Extend MCP joint (lift finger up) Extensor Digitorum Extensor Indices Extensor Digiti Minimi (V) Extensor Pollicis Brevis Extensor Pollicis Longus Abductor Pollicis Longus
For the extrinsic thumb muscles (last 3) think about the 3 tendons of the snuff box |
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Term
FLEXOR DIGITORUM SUPERFICIALIS
insertion?
action?
innervation? |
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Definition
Insert onto MIDDLE Phalanx of each FINGER (not thumb!)
Flexes PIP joint
Median Nerve |
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Term
| Intrinsic Muscles of Hand (Thenar) Thenar = Palm near thumb Pollicis = Thumb |
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Definition
Only in hand! Flexor Pollicis Brevis Abductor Pollicis Brevis Opponens Pollicis MEDIAN NERVE
Mnemonic for the INTRINSIC Thenar and Hypothenar muscles:
AFO = All For Obama = Abductor, Flexor, Opponens |
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Term
| Intrinsic Muscles of Hand (Hypothenar) Hypothenar = Palm near Pinky Minimi = pinky |
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Definition
Abductor Digiti Minimi, Flexor Digiti Minimi, Opponens Digiti Minimi (not saddle, doesn't oppose)
ULNAR NERVE
Mnemonic for the INTRINSIC Thenar and Hypothenar muscles:
AFO = All For Obama = Abductor, Flexor, Opponens |
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Term
| Intrinsic Hand Muscles - what adducts the thumb. Nerve? |
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Definition
Adductor pollicis
ULNAR NERVE |
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Term
More intrinsic muscles:
Lumbricals
Action and Nerves? |
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Definition
4 of them for each finger
Flex MCP joint
Extend IP joints (PIP, DIP)
Median n (index,middle) Ulnar n (ring, pinky) |
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Term
| Last group of Intrinsic hand muscles... |
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Definition
Interossei muscles - 4 Dorsal and 3 Palmar
Primary FLEXORS of MCP joint |
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Term
| Palmar Interossei muscles |
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Definition
Flexes MCP joint AND Adducts MCP joint of fingers TOWARDS middle finger (2nd finger)
Ulnar Nerve (C8,T1) |
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Term
| Dorsal Interossei muscles |
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Definition
Flexes MCP joint AND Abducts MCP joints of fingers 1,2,3 (pinky has abductor digiti minimi)
Ulnar Nerve (C8,T1) |
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Term
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Definition
Binds Extensor Digitorum to MCP joint
Extensor Digitorum, E. D. Indices and Minimi act on MCP joints! |
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Term
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Definition
| Acts on Proximal Interphalangeal Joint (PIP) |
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Term
| Lateral Bands (notice plural) |
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Definition
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Term
| Lumbricals (precise GRIP) |
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Definition
From the Flexor digitorum Profundus tendon
Flex MCP joint AND Extend IP joints
Median (1/2 finger)
Ulnar n (3/4) |
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Term
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Definition
Flex MCP joint
Abduct (dorsal) or Adduct (palmar) MCP joints of FINGERS
Nerve: Ulnar Nerve (mainly C8, and T1) |
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Term
| If middle finger (2nd finger) moves right or left it is being ... |
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Definition
ABDUCTED.
Middle finger is Abducted in ANY direction b/c the center of the hand is the middle finger!
It has 2 dorsal interossei. If it goes towards the index, the lateral dorsal interossei is working and if it's going towards the ring finger, the medial dorsal interossei of the middle finger is used...all to ABDUCT! |
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Term
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Definition
C6 dermatome
Dorsal hand and thumb |
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Term
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Definition
C6-7 Dermatome Lateral Palm, Thumb, 2.5 digits
C8 Myotome, Motor to:
Thenar muscles
1st 2 lumbricals
All 4 Flexor Digitorum Superficialis
1st 2 Flexor Digitorum Profundi |
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Term
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Definition
C8 Dermatome Ulnar side - pinky and half of middle finger (1.5 fingers from ulnar side)
C8 Myotome
Hypothenar m.m. (AFO), interossei (ALL of THEM; palmar and dorsal), adductor policis, and lumbricals of 3rd and 4th finger |
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Term
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Definition
Anastomoses b/w the Superficial branches of the Radial and Ulnar arteries
Ulnar Superficial branch "dominates" (large) |
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Term
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Definition
Anastomoses b/w the Deep branches of the Radial and Ulnar arteries
Radial Deep Branch "dominates" (large)
Supplies intrinsic hand muscles |
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Term
| Median nerve passes thru the |
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Definition
| Carpal Tunnel to the first 2 fingers and thenar muscles |
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Term
| Ulnar nerve passes thru the |
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Definition
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