Muscles in hand Flashcards

Question 1

Q

Extensor Pollicis

Longus (EPL)

Answer

A

Dorsal surface of Ulna &amp;
interossious membrane
Base of 1st Distal
phalanx
radial nerve

Question 2

Q

Extensor Pollicis

Brevis (EPB)

Answer

A

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

Question 3

Q

Extensor Indicis

EI

Answer

A

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

Question 4

Q

Abductor Pollicis

Brevis

Answer

A

Scaphoid tubercle &amp;
Flexor retinaculum
Base of proximal
Phalanx of thumb
Median n

Question 5

Q

Flexor Pollicis

Brevis

Answer

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)

Question 6

Q

Opponens Pollicis

Answer

A

Tubercle of Trapezium
&amp; Flexor retinaculum
Radial side of 1st
metacarpal
Median n. (C8-
T1)

Question 7

Q

Adductor pollicis

Answer

A

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

Question 8

Q

Abductor digit minimi

Answer

A

Pisiform &amp; Pisohamate
ligament
Ulnar surface of
base of proximal
phalanx of 5th
finger
Ulnar n. (

Question 9

Q

Flexor Digiti T1)

Minimi Brevis

Answer

A

Hook Hamate &amp; Flexor
retinaculum
Palmar surface of
base of proximal
phalanx of 5th
finger
ulnar n

Question 10

Q

Opponens Digiti

Minimi

Answer

A

Hook Hamate &amp; Flexor
retinaculum
Palmar surface of
base of proximal
phalanx of 5th
finger
Ulnar

Question 11

Q

Lumbricals (1-2)

Answer

A

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

Question 12

Q

Lumbricals (3-4)

Answer

A

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

Question 13

Q

Dorsal interossei

Answer

A

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

Question 14

Q

Palmar interossei

Answer

A

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

Question 15

Q

grooves separating the Biceps Brachii

muscle from the Brachialis muscle on both sides of the arm

Answer

A

Medial and Lateral Bicipital grooves

Question 16

Q

Median nerve in forarm

Answer

Study These Flashcards

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.