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Anatomy 1. Semester > Muscles in hand > Flashcards

Muscles in hand Flashcards

1
Q

Extensor Pollicis

Longus (EPL)

A 
Dorsal surface of Ulna &
interossious membrane
Base of 1st Distal
phalanx
radial nerve
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2
Q

Extensor Pollicis

Brevis (EPB)

A 
Middle 1/3 of Ulna,
Radius and interossious
membrane (Dorsal
aspect).
Base of 1st
Proximal phalanx.
radial nerve
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3
Q

Extensor Indicis

EI

A 
Posterior surface of
distal 1/3 of ulna and
interossious membrane
Extensor
expansion of 2nd
finger.
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4
Q

Abductor Pollicis

Brevis

A 
Scaphoid tubercle &
Flexor retinaculum
Base of proximal
Phalanx of thumb
Median n
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5
Q

Flexor Pollicis

Brevis

A 
 Superficial head:
Flexor retinaculum
 Deep head: Tubercle
of Trapezium
Metacarpophalangeal
joint
of thumb (Radial
sesamoid bone)
Superficial
head: Median
n. (C8-T1)
 Deep Head:
Ulnar n. (C8-
T1)
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6
Q

Opponens Pollicis

A 
Tubercle of Trapezium
& Flexor retinaculum
Radial side of 1st
metacarpal
Median n. (C8-
T1)
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7
Q

Adductor pollicis

A 
 Oblique head: bases
of 2nd & 3rd metacarpals
and adjacent carpals
 Transverse head:
shaft of 3rd metacarpal
Metacarpophalangeal
joint
of thumb (Ulnar
sesamoid bone)
Ulnar n. (C8-
T1)
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8
Q

Abductor digit minimi

A 
Pisiform & Pisohamate
ligament
Ulnar surface of
base of proximal
phalanx of 5th
finger
Ulnar n. (
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9
Q

Flexor Digiti T1)

Minimi Brevis

A 
Hook Hamate & Flexor
retinaculum
Palmar surface of
base of proximal
phalanx of 5th
finger
ulnar n
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10
Q

Opponens Digiti

Minimi

A 
Hook Hamate & Flexor
retinaculum
Palmar surface of
base of proximal
phalanx of 5th
finger
Ulnar
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11
Q

Lumbricals (1-2)

A 
1st & 2nd
\: Radial 2
tendons of Flexor
Digitorum Porfundus
(Unipennate)
Extensor
expansions or
hoods
median
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12
Q

Lumbricals (3-4)

A 
3rd & 4th
\: Ulnar 3
tendons of FDP
(Bipennate)
Extensor
expansions or
hoods
ulnar n
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13
Q

Dorsal interossei

A 
Adjacent sides of 2
metacarpals (Bipennate)
Bases of Proximal
Phalanges &
extensor hoods of
2
nd
– 4
th fingers. Ulnar n. (
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14
Q

Palmar interossei

A 
Palmar surfaces of 2nd
,
4
th and 5th metacarpals
(Unipennate)
Bases of Proximal
Phalanges &
extensor hoods of
2
nd, 4th and 5th
fingers.
Ulnar n.
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15
Q

grooves separating the Biceps Brachii

muscle from the Brachialis muscle on both sides of the arm

A

Medial and Lateral Bicipital grooves

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16
Q

Median nerve in forarm

A

Median n. in the forearm first runs between the 2 heads of Pronator Teres muscle
and then runs inside the fascia of the Flexor Digitorum Superficialis in an Epifascial
position.

17
Q

Fusiform muscles

A

have fibres that run parallel to the length of the muscle

18
Q

Unipennate muscles

A

Unipennate muscles have fibres that run the entire length of only one side of a muscle, like a quill pen.

19
Q

Bipennate muscles

A

Bipennate muscles consist of two rows of oblique muscle fibres, facing in opposite diagonal directions, converging on a central tendon.

Anatomy 1. Semester (9 decks)

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