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Anatomy - OINAs > Wrist and Hand OINAs > Flashcards

Wrist and Hand OINAs Flashcards

1
Q

Flexor Carpi Radialis (FCR)

(Anterior Forearm)

A

O: Medial epicondyle of humerus

I: Base of 2nd metacarpal

N: Median nerve
R: C6, C7

Action: *Wrist flexion, *Radial deviation (abduction)

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2
Q

Pronator Teres

(Anterior Forearm)

A

O: Medial epicondyle, coronoid process ulna

I: Middle lateral surface radius

N: Median nerve
R: C6,C7

A: *Pronation forearm, flexion elbow

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3
Q

Flexor Carpi Ulnaris (FCU)

(Anterior Forearm)

A

O:
-Humeral Head: Medial
epicondyle
-Ulnar head: Olecranon
process and posterior border
of ulna

I: Pisiform, hamate hook, base of 5th metacarpal

N: Ulnar nerve
R: C8, T1

A: Wrist flexion, Ulnar deviation (adduction)

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4
Q

Palmaris Longus (PL)

(Anterior Forearm)

A

O: Medial epicondyle of humerus

I: Palmar aponeurosis and distal flexor retinaculum

N: Median nerve
R C7, C8

A: Assists wrist flexion, tightens palmar aponeurosis

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5
Q

Flexor Digitorum Superficialis (FDS)

(Anterior Forearm)

A

O:
-Humeral Head: Medial
epicondyle, ulnar collateral
ligament, coronoid process
of ulna
-Radial head: Proximal 1/2 of
anterior radius

I: Bodies of middle phalanges of digits 2-5

N: Median nerve
R: C7, C8, T1

A: Flexion PIP joints, assists flexion MCP joints with digits 2-5

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6
Q

Flexor Digitorum Profundus

(Anterior Forearm)

A

O: Proximal 3/4 of medial and anterior ulna and anterior interosseous membrane

I: Bases of distal phalanges of digits 2-5

N:
-Medial part: ulnar nerve
-Lateral part: median nerve
R: Both C8, T1

A: Flexion DIP joints digits 2-5, assists wrist flexion

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7
Q

Flexor Pollicis Longus (FPL)

(Anterior Forearm)

A

O: Anterior radius and interosseous membrane

I: Base of distal phalanx of thumb

N: Median nerve
R: C8, T1

A: Flexion IP joint thumb, assists flexion MCP joint thumb

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8
Q

Pronator Quadratus (PQ)

(Anterior Forearm)

A

O: Distal 1/4 of ulna

I: Distal1/4 of radius

N: Median nerve
R: C8, T1

A: Pronation forearm, assists stability of distal radius/ulna

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9
Q

Supinator

(Posterior Forearm)

A

O: Lateral epicondyle humerus and lateral border ulna

I: Proximal 1/3 of anterior and lateral radius

N: Radial nerve
R: C5, C6

A: *Supination forearm

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10
Q

Brachioradialis

(Posterior Forearm)

A

O: Proximal 2/3 lateral supracondylar ridge humerus

I: Styloid process radius

N: Radial nerve
R: C5,C6

A: *Flexion elbow

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11
Q

Extensor Carpi Radialis Longus (ECRL)

(Posterior Forearm)

A

O: Distal 1/3 of lateral supracondylar ridge of humerus

I: Base of 2nd metacarpal

N: Radial nerve
R: C6, C7, C8

A: Wrist extension, Radial deviation (abduction)

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12
Q

Extensor Carpi Radialis Brevis (ECRB)

(Posterior forearm)

A

O: Lateral epicondyle of humerus

I: Base of 3rd metacarpal

N: Radial nerve
R: C6, C7, C8

A: Wrist extension, Radial deviation (abduction)

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13
Q

Extensor Carpi Ulnaris (ECU)

(Posterior forearm)

A

O: Lateral epicondyle of humerus, posterior border of ulna

I: Base of 5th metacarpal

N: Radial nerve
R: C6, C7, C8

A: Wrist extension, Ulnar deviation (adduction)

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14
Q

Extensor Digitorum (ED)

(Posterior forearm)

A

O: Lateral epicondyle of humerus

I: Extensor expansions of digits 2-5

N: Radial nerve
R: C6, 7, 8

A: Extension digits 2-5 (MCP, IP joints); assists wrist extansion

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15
Q

Extensor Digiti Minimi (EDM)

(Posterior forearm)

A

O: Lateral epicondyle of humerus

I: Extensor expansions of 5th digit

N: Radial nerve
R: C6, 7, 8

A: Extension 5th digit (MCP, IP joints)

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16
Q

Extensor Indicis (EI)

(Posterior forearm)

A

O: Posterior surface of ulna and interosseous membrane

I: Extensor expansion of 2nd digit

N: Radial nerve
R: C6, 7, 8

A: Extension 2nd digit

17
Q

Extensor Pollicis Longus (EPL)

(Posterior forearm)

A

O: Middle 1/3 of posterior ulna, interosseous membrane

I: Base of distal phalanx of 1st digit

N: Radial nerve
R: C6, 7, 8

A: Extension IP joint thumb, extension MCP, CMC joints

18
Q

Extensor Pollicis Brevis (EPB)

(Posterior forearm)

A

O:Posterior radius, interosseous membrane

I: Base of proximal phalanx of 1st digit

N: Radial nerve
R: C6, 7, 8

A: Extension MCP joint thumb, extension CMC joint

19
Q

ABductor Pollicis Longus (APL)

(Posterior forearm)

A

O: Proximal 1/2 of posterior ulna, interosseous membrane, radius

I: Base of 1st metacarpal

N: Radial nerve
R: C6, 7, 8

A: ABduction thumb

20
Q

ABductor Pollicis Brevis

(Hand)

A

N: Median nerve
A: ABduction thumb*, assists opposition

21
Q

Flexor Pollicis Brevis

(Hand)

A

N: Median nerve
A: Thumb flexion

22
Q

Opponens Pollicis

(Hand)

A

N: Median nerve
A: Opposition thumb

23
Q

ADductor Pollicis

(Hand)

A

N: Ulnar nerve
A: ADduction thumb toward midline of hand

24
Q

ABductor Digiti Minimi

(Hand)

A

N: Ulnar nerve
A: ABduction 5th digit

25
Q

Flexor Digiti Minimi Brevis

(Hand)

A

N: Ulnar nerve
A: Flexion of 5th digit

26
Q

Opponens Digiti Minimi

(Hand)

A

N: Ulnar nerve
A: Opposition 5th digit

27
Q

Lumbricals

(Hand)

A

O: Tendons of FDP

I: Extensor expansion hood digits 2-5

N:
-D1-2: median nerve
-D3-4: ulnar nerve

A: Flexion MCP joint

28
Q

Interosseous Muscles

(Hand)

A

N: all innervated by ulnar nerve

-4 Dorsal interossei: ABduct digits with midline of hand
-3 Palmer interossei: ADduct digits with midline of hand

29
Q

Palmaris Brevis

(Hand)

A

-Subcutaneous tissue of hypothenar region (NOT in hypothenar compartment)

-Wrinkle skin of hypothenar eminence, deepen hollow of palm

Anatomy - OINAs (7 decks)

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