Palm of the Hand Muscles Flashcards

1
Q

Adductor Pollicis Brevis

Origin

A

-Flexor rentinaculum and tubercles of scaphoid and trapezium

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2
Q

Adductor Pollicis Brevis

Insertion

A

-Lateral side of base of proximal phalanx of thumb

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3
Q

Adductor Pollicis Brevis

Innervation

A

-Recurrent branch of median nerve (C8, T1)

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4
Q

Adductor Pollicis Brevis

Action

A
  • Abducts thumb

- Opposes thumb

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5
Q

Opponens Pollicis

Origin

A

-Flexor rentinaculum and tubercles of scaphoid and

trapezium

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6
Q

Opponens Pollicis

Insertion

A

-Lateral side of 1st metacarpal

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7
Q

Opponens Pollicis

Innervation

A

-Recurrent branch of median nerve (C8, T1)

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8
Q

Opponens Pollicis

Action

A

-Opposes thumb

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9
Q

Flexor Pollicis Brevis

Origin

A

-Flexor rentinaculum and tubercles of scaphoid and

trapezium

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10
Q

Flexor Pollicis Brevis

Insertion

A

-Lateral side of base of proximal phalanx of thumb

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11
Q

Flexor Pollicis Brevis

Innervation

A

-Superficial head: recurrent branch of median nerve
(C8, T1)
-Deep head: deep branch ofulnar nerve (C8, T1)

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12
Q

Flexor Pollicis Brevis

Action

A

-Flexes MCP of 1st digit (thumb)

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13
Q

Flexor Digiti Minimi Brevis

Origin

A

-Hook of hamate and flexor rentinaculum

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14
Q

Flexor Digiti Minimi Brevis

Innervation

A

-Medial side of base of proximal phalanx of 5th digit

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15
Q

Flexor Digiti Minimi Brevis

Insertion

A

-Deep branch of ulnar nerve (C8, T1)

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16
Q

Flexor Digiti Minimi Brevis

Action

A

-Flexes MCP of 5th digit

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17
Q

Abductor Digiti Minimi

Origin

A

-Pisiform

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18
Q

Abductor Digiti Minimi

Insertion

A

-Medial side of base of proximal phalanx of 5th digit

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19
Q

Abductor Digiti Minimi

Innervation

A

-Deep branch of ulnar nerve (C8, T1)

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20
Q

Abductor Digiti Minimi

Action

A

-Abducts & flexes MCP of 5th digit

21
Q

Opponens Digiti Minimi

Origin

A

-Hook of hamate and flexor rentinaculum

22
Q

Opponens Digiti Minimi

Insertion

A

-Medial border of 5th metacarpal

23
Q

Opponens Digiti Minimi

Innervation

A

-Deep branch of ulnar nerve (C8, T1)

24
Q

Opponens Digiti Minimi

Action

A

-Opposes 5th digit

25
Q

Palmaris Brevis

Origin

A

-Palmar aponeurosis

26
Q

Palmaris Brevis

Insertion

A

-Skin of hand on ulnar side

27
Q

Palmaris Brevis

Innervation

A

-Superficial branch of ulnar nerve (C8, T1)

28
Q

Palmaris Brevis

Action

A

-Tenses skin of palmar fascia

29
Q

Adductor Pollicis

Origin

A

-Oblique head: base of 2nd and 3rd metacarpals;
trapezoid & capitate
-Transverse head: anterior surface of 3rd metacarpal

30
Q

Adductor Pollicis

Insertion

A

-Medial side of base of proximal phalanx of thumb

31
Q

Adductor Pollicis

Innervation

A

-Deep branch of ulnar nerve (C8, T1)

32
Q

Adductor Pollicis

Action

A

-Adducts thumb

33
Q

Lumbricals (1st & 2nd)

Origin

A

-Lateral two tendons of flexor digitorum profundus

as unipennate muscles

34
Q

Lumbricals (1st & 2nd)

Insertion

A

-Lateral sides of extensor expansions of 2nd-3rd digits

35
Q

Lumbricals (1st & 2nd)

Innervation

A

-Median nerve (C8, T1)

36
Q

Lumbricals (1st & 2nd)

Action

A

-Flexes MCP joints and extends IP joints of 2nd-3rd

digits

37
Q

Lumbricals (3rd & 4th)

Origin

A

-Medial three tendons of flexor digitorum profundus

as bipennate muscles

38
Q

Lumbricals (3rd & 4th)

Insertion

A

-Lateral sides of extensor expansions of 4th-5th digits

39
Q

Lumbricals (3rd & 4th)

Innervation

A

-Deep branch of ulnar nerve (C8, T1)

40
Q

Lumbricals (3rd & 4th)

Action

A

-Flexes MCP joints and extends IP joints of 4th-5th

digits

41
Q
Dorsal Interossei (1st - 4th) 
Origin
A

-Adjacent sides of two metacarpals (as bipennate

muscles)

42
Q
Dorsal Interossei (1st - 4th)
Insertion
A

-Bases of proximal phalanges and extensor expansions of 2nd-4th digits

43
Q
Dorsal Interossei (1st - 4th)
Innervation
A

-Deep branch of ulnar nerve (C8, T1)

44
Q
Dorsal Interossei (1st - 4th)
Action
A

-Abducts 2nd-4th digits from axial line;
-Acts with lumbricals to flex MCP joints and extend
IP joints
-1st dorsal interosseous adducts thumb

45
Q
Palmer Interossei (1st - 3rd) 
Origin
A

-Palmar surfaces of 2nd, 4th, and 5th metacarpals (as unipennate muscles)

46
Q
Palmer Interossei (1st - 3rd) 
Insertion
A

-Bases of proximal phalanges; extensor expansions of 2nd, 4th , and 5th digits

47
Q
Palmer Interossei (1st - 3rd) 
Innervation
A

-Deep branch of ulnar nerve (C8, T1)

48
Q
Palmer Interossei (1st - 3rd) 
Action
A

-Adducts 2nd, 4th , and 5th digits toward axial line;
-Acts with lumbricals to flex MCP joints and extend
IP joints