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Unit 1 Anatomy > Anterior Forearm - Fxn&Innervation > Flashcards

Anterior Forearm - Fxn&Innervation Flashcards

1
Q

1st Anterior Compartment

A

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

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2
Q

Pronator Teres Innervation

A

Median Nerve

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3
Q

Pronator Teres Function

A

Pronates forearm at elbow, assists in flexion at elbow

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4
Q

Flexor Carpi Radialis Innervation

A

Median nerve

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5
Q

Flexor Carpi Radialis Function

A

Flexes and abducts hand at wrist

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6
Q

Palmaris Longus Innervation

A

Median nerve

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7
Q

Palmaris Longus Function

A

Flexes hand at wrist, tenses palmar aponeurosis

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8
Q

Palmar Aponeurosis

A

Insertion point for the tendon palmaris longus

Origin point for the palmaris brevis

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9
Q

Flexor Carpi Ulnaris Function

A

Flexes and adducts hand at wrist

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10
Q

2nd Anterior Compartment

A

Flexor Digitorum Superficialis

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11
Q

Flexor Digitorum Superficialis Innervation

A

Median nerve

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12
Q

Flexor digitorum Superficialis Function

A

Flexes phalanges of digits 2-5 at MP and PIP

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13
Q

3rd Anterior Compartment

A

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

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14
Q

Flexor Digitorum Profundus Function

A

Flexes phalanges at DIP

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15
Q

Flexor Pollicis Longus Innervation

A

Anterior interosseous nerve

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16
Q

Flexor Pollicis Longus Function

A

Flexes pollex (Thumb)

17
Q

Pronator Quadratus Innervation

A

Anterior interosseous nerve

18
Q

Pronator Quadratus Function

A

Pronates forearm at elbow

19
Q

Flexor Digitorum Profundus Innervation

A

Anterior interosseous nerve (bellies to digits 2 & 3)

Ulnar nerve (bellies to digits 4 & 5)

20
Q

Flexor Carpi Ulnaris Innervation

A

Ulnar nerve

21
Q

jk

A

jk

22
Q

What are the three muscles of the Snuff Box

A

Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis

23
Q

jk

A

jk

24
Q

Fxn and Innervation: Extensor pollicis brevis

A

Fxn: Extends pollex (thumb)
Innervation: Posterior interosseous nerve

25
Q

How do you identify extensor pollicis longus vs extesnor pollicis brevis

A

extensor pollicis brevis attaches more proximal on the thumb. Longus is the bigger muscle and attaches more distally.

26
Q

Fxn and Innervation: Abductor pollicis brevis

A

Fxn: Abducts pollex (thumb)
Innervation: Recurrent branch of median nerve

27
Q

Fxn and Innervation: Flexor pollicis brevis

A

Fxn: Flexes pollex (thumb)
Innervation: Recurrent branch of median nerve

28
Q

Fxn and Innervation: Opponens pollicis

A

Fxn: Opposes pollex (thumb)
Innervation: Recurrent branch of median nerve

28
Q

Fxn and Innervation: Abductor digiti minimi

A

Fxn: Abducts digit 5 away from midline of hand
Innervation: Deep branch of ulnar nerve

29
Q

Fxn and Innervation: Adductor pollicis

A

Fxn: Adducts pollex (thumb)
Innervation: Deep branch of ulnar nerve

30
Q

Fxn and Innervation: Lumbricals

A

Fxn: Flexes at MP joint, extends at PIP/DIP
Innervation: Median nerve (for digits 2/3), deep branch of ulnar nerve (for digits 4/5)

31
Q

Fxn and Innervation: Palmar interossei

A

Fxn: Adducts digits 2, 4, 5 toward midline of hand
Innervation: Deep branch of ulnar nerve

Mnemonic for action: PAD DAB (palmar adduct, dorsal abduct)

32
Q

Fxn and Innervation: Dorsal interossei

A

Fxn: Abducts digits 2-4 away from midline of hand (2 muscles for middle finger)
Innervation: Deep branch of ulnar nerve

Mnemonic for action: PAD DAB (palmar adduct, dorsal abduct)

33
Q

What forms the carpal tunnel?

A

Flexor retinaculum of hand (transverse carpal ligament)

34
Q

What are the four hand bones that anchor the carpal tunnel (flexor retinaculum)

A

Scaphoid
Trapezium
Pisiformis
Hamate

Unit 1 Anatomy (8 decks)

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