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Anatomy > UE (Exam 2) Muscles/Attach/Innervat > Flashcards

UE (Exam 2) Muscles/Attach/Innervat Flashcards

0
Q

Palmar Interossei

A

Deep Ulnar N C8,T1
metacarpal shaft//extensor expansion
MCP flex, ext PIP/DIP, MCP adduct

Intermetacarpal compartment

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1
Q

Dorsal Interossei

A

Deep Ulnar N: C8,T1
Metacarpal shaft//extensor expansion
Flex MCP, extend PIP/DIP, MCP abd

Intermetacarpal compartment

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2
Q

adductor pollicis

A 
Deep Ulnar N: C8,T1
Origin: 
-Transverse head:3rd MC shaft
-Oblique head: capitate/trapezoid & base of their MC's
Insertion: proximal phalanx of thumb

Action:

  • ulnar adduction of thumb
  • adduct CMP, flex MCP of thumb

part of adductor compartment

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3
Q

Lumbricals

A

Digits 2,3: median N C8,T1
Digits 4,5: deep Ulnar N C8,T1

FDP tendon//extensor expansion (slightly distal to interossei)

Flex MCP, extend PIP/DIP

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4
Q

Abductor Digiti Minimi

A

Deep Ulnar N: C8,T1
Origin: flexor retinacul, pisiform
insert: ulnar side of prox phalanx of little finger

action: abd CMC, MCP
Hypothenar compartment

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5
Q

flexor digiti minimi brevis

A 
deep Ulnar N C8,T1
O:flexor retinacul, hook of hamate
I: lnar side of base of prox phalanx
A:flex CMC, MCP
Hypothenar compartment
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6
Q

opponens digiti minimi

A

deep ulnar N: C8,T1
O:flexor retinacul, hook of hamate
I: body of MC of little finger (ulnar side)
A: circumduction of little finger toward thumb by flex, med rot of MC @ CMC jt
Hypothenar compartment

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7
Q

Palmaris Brevis

A 
superficial Ulnar N C8,T1
O:palmar aponeurosis, flex retinacul
I:skin over hypothenar compartment
A:pulls skin over hypothenar toward mid palm-->protect ulnar A&N
Hypothenar compartment
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8
Q

Abductor Pollicis Brevis

A

recurrent branch of median N C8,T1
O: flexor retinacul, tubercle of scaphoid/trapezium
I: palmar radial side of base of prox thumb
A:radial abd of thumb @ CMC; assist in opposition
Thenar compartment

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9
Q

flexor pollicis brevis

A

superficial head:recurrent branch of median N C8,T1
deep head: deep ulnar N C8, T1
O: tubercle of trapezium, flex retinacul
I:palmar radial side of base of prox thumb
A: flex MCP, CMC
thenar compartment

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10
Q

Opponens pollicis

A

recurrent branch of median N C8,T1
O: flexor retinacul, tubercle of trapezium
I:radial side of MC
A:circumduction of thumb toward mid palm, medial rotation of MC (both at CMC)
Thenar compartment

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11
Q

supinator

A

deep radial N C5,6
O: supinator crest, lat epi, RCL and annular lig
I:dorsal, lateral, palmar surface of prox radius
A: supinate @ prox rad-uln jt; stabilize prox rad-uln jt
Deep posterolateral compartment of forearm

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12
Q

Abductor pollicis longus

A

deep radial N C7,8
O: posterior surface of middle ulna & radius; interosseous memb
I: dorsal base of MC
A: abd of CMC, radial dev, assists in supination
Deep posterolateral compartment of forearm

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13
Q

Extensor Pollicis Longus

A

deep radial N C7,8
O: posterior surface of middle ulna; interosseous memb
I:dorsal base of distal thumb
A: extension of IP, MCP, CMC; Radial dev; assists in supination
deep posterolateral forearm

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14
Q

extensor pollicis brevis

A

deep radial N C7,8
O: posterior surface of middle radius; interosseous memb
I:dorsal base of prox thumb
A:extension of MCP, CMC; rad dev; assists in supination
deep posterolateral forearm

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15
Q

Extensor indicis

A

deep radial N C7,8
O: posterior surface of distal ulna; interosseous memb
I: extensor assembly of index finger
A: extension of DIP, PIP, MCP, CMC, wrist
deep posterolateral forearm

16
Q

brachioradialis

A

radial N C5,6
O: prox lateral supracondylar ridge
I: lateral base, styloid process of radius
A:flex humeroulnar, humeroradial jts, assists in supination to neutral
superficial lateral group

17
Q

extensor carpi radialis longus

A 
radial N C6,7
O:distal lateral supracondylar ridge
I: base of 2nd MC
A: extension of radial wrist, radial deviation
superficial lateral group
18
Q

extensor carpi radialis brevis

A 
deep radial N C7
O:lateral epi via common ext tend; Rad Collateral Lig
I: base of 3rd MC
A: wrist ext
superficial lateral group
19
Q

extensor digitorum

A 
deep radial N C7,8
O: lateral epi (common ext tend)
I: extensor assembly D2-5
A: extension of DIP, PIP, MCP, wrist
superficial posterior compartment of forearm
20
Q

extensor digiti minimi

A 
deep radial N C7,8
O: lat epi (common ext tend)
I: extensor assembly of little finger
A: extend DIP, PIP, MCP of little finger
superficial posterior group
21
Q

extensor carpi ulnaris

A 
deep radial N C7,8
O: lateral epi (common ext tend), post ulna
I:dorsal base of 5th MC
A: ext of ulnar side of wrist; ulnar dev
superficial posterior group
22
Q

pronator teres

A

median N C6,7
O: medial epi (common flex tend); coronoid process
I: middle 1/3 of lateral radius
A: pronation @ prox/dist radioulnar jt; elbow flex; stabilize prox radioulnar jt.
Anteromedial compartment

23
Q

flexor carpi radialis

A 
median N C6,7
O: medial epi (common flex tend)
I:palmar base of MC 2&3 (index, middle)
A:flexion of radial side of wrist; rad dev @ midcarpal jt; elbow flex
anteromedial compartment
24
Q

palmaris longus

A 
median N C7
O: med epi (common flex tendon)
I: palmar aponeurosis, flex retinacul
A: flexion of radiocarpal jt; tenses palmar aponeurosis
Anteromedial compartment
25
Q

Flexor Digitorum Superficialis

A 
median N C7,8
O: med epi (common flex tendon); coronoid process;central anterior radius
I: sides of middle phalanx of digits 2-5
A: flex PIP, MCP, wrist, elbow
anteromedial compartment
26
Q

flexor carpi ulnaris

A

ulnar N C8,T1
O: med epi (common flex tendon); olecranon, prox posterior ulna
I: palmar base of little finger, pisiform, hook of hamate;tendon continuous as pisohamate, pisometacarpal
A: flexion of ulnar side of wrist; uln dev @ midcarpal jt; elbow flex
anteromedial compartment

27
Q

Flexor Digitorum Profundus

A 
C8,T1
Anterior interosseous N: D2,3
ulnar N: D4,5
O: prox anterior & medial shaft of ulna; medial coronoid process;interosseous compartment
I:base of distal digits 2-5
A:flexion of DIP, PIP, MCP, CMC
deep anteromedial compartment
28
Q

flexor pollicis longus

A

anterior interosseous N C8,T1
O: anterior shaft of radius; interosseous memb
I: palmar base of distal thumb
A: flexion of IP, MCP, CMC; assists in wrist flex, pronation
Deep anteromedial compartment

29
Q

pronator quadratus

A 
Anterior Interosseous N: C8,T1
O:distal anterior ulna
I: distal anterior radius
A:pronation at prox/distal radioulnar jt; stabilizes distal radioulnar jt
Deep anteromedial compartment
30
Q

Triceps

A

radial N C6,7,8
O:
-long head: infraglenoid tubercle
-lateral head: upper lateral/posterior humerus (prox to rad groove)
-short head: lower medial/posterior humerus (distal to rad groove)
I: posterior, superior olecranon
A: elbow extension (all three heads); GH Ext and Add (long head)
Posterior compartment

31
Q

anconeus

A

radial N C7,8
O: posterior surface of lateral epicondyle
I: lateral aspect of olecranon and posterior prox ulna
A: extend elbow
posterior compartment

32
Q

coracobrachialis

A 
musculocutaneous N C5,6,7
lateral cord
O: tip of coracoid process
I: anteromedial aspect of mid humerus
A: GH flex; assists in GH adduct when humerus abducted
Anterior compartment of arm
33
Q

Biceps brachii

A

Musculocutaneous N (C5,6)
O:
-long head (labrum/supraglenoid tubercle)
-short head (tip of coracoid process)
I: radial tuberosity, bicipital aponeurosis
A:elbow flex; supination; assists in GH flex; GH abd (long head when arm is externally rotated)
Anterior compartment of arm

34
Q

brachialis

A 
musculocutaneous N C5,6
O: distal half of anterior humerus
I: coronoid process, ulnar tuberosity
A: elbow flex
Anterior compartment of arm

Anatomy (10 decks)

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