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Anatomy - HSC501 > Muscles of Anterior Compartment of Forearm > Flashcards

Muscles of Anterior Compartment of Forearm Flashcards

1
Q

List the Superficial (first) Layer of Muscles in the Anterior Compartment of the Forearm

A

Pronator Teres
Flexor Carpi Radialis (FCR)
Palmaris Longus
Flexor Carpi Ulnaris (FCU)

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2
Q

List the Intermediate (second) Layer of Muscles in the Anterior Compartment of the Forearm

A

Flexor Digitorum Superficialis (FDS)

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3
Q

List the Deep (third) Layer of Muscles in the Anterior Compartment of the Forearm

A

Flexor Digitorum Profundus (FDP)
Flexor Pollicis Longus (FPL)
Pronator Quadratus

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4
Q

Pronator Teres - Origin
Ulnar Head
Humeral Head

A

Coronoid process of ulna

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5
Q

Pronator Teres - Insertion
Ulnar Head
Humeral Head

A

Middle of convexity of lateral surface of radius

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6
Q

Pronator Teres - Innervation
Ulnar Head
Humeral Head

A

Median Nerve (C6, C7)

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7
Q

Pronator Teres - Action(s)
Ulnar Head
Humeral Head

A

Pronates forearm and flexes elbow joint

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8
Q

Flexor Carpi Radialis (FCR) - Origin

A

Medial epicondyle of humerus

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9
Q

Flexor Carpi Radialis (FCR) - Insertion

A

Base of 2nd (3rd) metacarpal

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10
Q

Flexor Carpi Radialis (FCR) - Innervation

A

Median Nerve (C6, C7)

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11
Q

Flexor Carpi Radialis (FCR) - Action(s)

A

Flexes and abducts hand at wrist

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12
Q

Palmaris Longus - Origin

A

Medial epicondyle of humerus

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13
Q

Palmaris Longus - Insertion

A

Distal half of flexor retinaculum

Palmar aponeurosis

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14
Q

Palmaris Longus - Innervation

A

Median Nerve (C7, C8)

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15
Q

Palmaris Longus - Action(s)

A

Flexes hand (at wrist) and tenses palmar aponeurosis

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16
Q

Flexor Carpi Ulnaris (FCU) - Origin
Humeral Head
Ulnar Head

A

Olecranon and posterior border of ulna (via aponeurosis)

17
Q

Flexor Carpi Ulnaris (FCU) - Insertion
Humeral Head
Ulnar Head

A

Pisiform
Hook of hamate
5th metacarpal

18
Q

Flexor Carpi Ulnaris (FCU) - Innervation
Humeral Head
Ulnar Head

A

Ulnar Nerve (C7, C8)

19
Q

Flexor Carpi Ulnaris (FCU) - Action(s)
Humeral Head
Ulnar Head

A

Flexes and adducts hand at wrist

20
Q

Flexor Digitorum Superficialis (FDS) - Origin

A

Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna

Radial head: oblique line of radius

21
Q

Flexor Digitorum Superficialis (FDS) - Insertion

A

Shafts (bodies) of middle phalanges of medial four digits

22
Q

Flexor Digitorum Superficialis (FDS) - Innervation

A

Median Nerve (C7, C8, T1)`

23
Q

Flexor Digitorum Superficialis (FDS) - Action(s)

A

Flexes wrist joint, carpometacarpal joints
Flexes proximal interphalangeal joints of middle four digits
Also flexes proximal phalanges at metacarpophalangeal joints

24
Q

Flexor Digitorum Profundus (FDP) - Origin

A

Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane

25
Q

Flexor Digitorum Profundus (FDP) - Insertion

A

Bases of distal phalanges of 2nd, 3rd, 4th, and 5th digits

26
Q

Flexor Digitorum Profundus (FDP) - Innervation

A 
Lateral Part (digits 2&3): median nerve (C8, T1)
Medial Part (digits 4&5): ulnar nerve (C8, T1)
27
Q

Flexor Digitorum Profundus (FDP) - Action(s)

A

Flexes wrist joint, carpometacarpal joints
Flexes distal interphalangeal joints of digits 2-5
Assists with wrist flexion

28
Q

Flexor Pollicis Longus (FPL) - Origin

A

Anterior surface of radius and adjacent interosseous membrane

29
Q

Flexor Pollicis Longus (FPL) - Insertion

A

Base of distal phalanx of thumb

30
Q

Flexor Pollicis Longus (FPL) - Innervation

A

Anterior interosseous nerve, from median nerve (C8, T1)

31
Q

Flexor Pollicis Longus (FPL) - Action(s)

A

Flexes wrist joint, carpometacarpal joints

Flexes metacarpophalangeal and interphalangeal joints of thumb

32
Q

Pronator Quadratus - Origin

A

Distal quarter of anterior surface of ulna

33
Q

Pronator Quadratus - Insertion

A

Distal quarter of anterior surface of radius

34
Q

Pronator Quadratus - Innervation

A

none

35
Q

Pronator Quadratus - Action(s)

A

Pronates forearm; deep fibers bind radius and ulna together

Anatomy - HSC501 (18 decks)

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