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M a i n m e n u
M a i n m e n u
N a v i g a t i o n
● M a i n p a g e ● C o n t e n t s ● C u r r e n t e v e n t s ● R a n d o m a r t i c l e ● A b o u t W i k i p e d i a ● C o n t a c t u s ● D o n a t e
C o n t r i b u t e
● H e l p ● L e a r n t o e d i t ● C o m m u n i t y p o r t a l ● R e c e n t c h a n g e s ● U p l o a d f i l e
S e a r c h
Search
A p p e a r a n c e
● C r e a t e a c c o u n t ● L o g i n
P e r s o n a l t o o l s
● C r e a t e a c c o u n t ● L o g i n
P a g e s f o r l o g g e d o u t e d i t o r s l e a r n m o r e ● C o n t r i b u t i o n s ● T a l k
( T o p )
1 S t r u c t u r e
T o g g l e S t r u c t u r e s u b s e c t i o n
1 . 1 N e r v e s u p p l y
2 F u n c t i o n
3 A d d i t i o n a l i m a g e s
4 R e f e r e n c e s
T o g g l e t h e t a b l e o f c o n t e n t s
A b d u c t o r p o l l i c i s b r e v i s m u s c l e
1 9 l a n g u a g e s
● ا ل ع ر ب ي ة ● C a t a l à ● D e u t s c h ● E s p a ñ o l ● ف ا ر س ی ● F r a n ç a i s ● G a l e g o ● 한 국 어 ● H r v a t s k i ● I t a l i a n o ● ע ב ר י ת ● M a g y a r ● 日 本 語 ● P o l s k i ● P o r t u g u ê s ● R o m â n ă ● Р у с с к и й ● S l o v e n č i n a ● T a g a l o g
E d i t l i n k s
● A r t i c l e ● T a l k
E n g l i s h
● R e a d ● E d i t ● V i e w h i s t o r y
T o o l s
T o o l s
A c t i o n s
● R e a d ● E d i t ● V i e w h i s t o r y
G e n e r a l
● W h a t l i n k s h e r e ● R e l a t e d c h a n g e s ● U p l o a d f i l e ● S p e c i a l p a g e s ● P e r m a n e n t l i n k ● P a g e i n f o r m a t i o n ● C i t e t h i s p a g e ● G e t s h o r t e n e d U R L ● D o w n l o a d Q R c o d e ● W i k i d a t a i t e m
P r i n t / e x p o r t
● D o w n l o a d a s P D F ● P r i n t a b l e v e r s i o n
I n o t h e r p r o j e c t s
● W i k i m e d i a C o m m o n s
A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m A b d u c t o r p o l l i c i s b r e v i s )
The abductor pollicis brevis is a muscle in the hand that functions as an abductor of the thumb .
Structure [ edit ]
The abductor pollicis brevis is a flat, thin muscle located just under the skin. It is a thenar muscle , and therefore contributes to the bulk of the palm's thenar eminence .
It originates from the flexor retinaculum of the hand , the tubercle of the scaphoid bone, and additionally sometimes from the tubercle of the trapezium .
Running lateralward and downward, it is inserted by a thin, flat tendon into the lateral side of the base of the first phalanx of the thumb , and the capsule of the metacarpophalangeal joint .
Nerve supply [ edit ]
The abductor pollicis brevis is supplied by the recurrent branch of the median nerve (Roots C8-T1).[2] [3]
Function [ edit ]
Abduction of the thumb is defined as the movement of the thumb anteriorly, a direction perpendicular to the palm. The abductor pollicis brevis does this by acting across both the carpometacarpal joint and the metacarpophalangeal joint .
It also assists in opposition and extension of the thumb.
Additional images [ edit ]
References [ edit ]
This article incorporates text in the public domain from page 461 of the 20th edition of Gray's Anatomy (1918)
^ Preston, David C.; Shapiro, Barbara E. (2013-01-01), Preston, David C.; Shapiro, Barbara E. (eds.), "6 - Repetitive Nerve Stimulation" , Electromyography and Neuromuscular Disorders (Third Edition) , London: W.B. Saunders, pp. 52–61, doi :10.1016/b978-1-4557-2672-1.00006-4 , ISBN 978-1-4557-2672-1 , retrieved 2020-10-24
^ Visser, Gerhard H.; Blok, Joleen H. (2009-01-01), Bromberg, M. B. (ed.), "Chapter 6 - The CMAP scan" , Supplements to Clinical Neurophysiology , Motor Unit Number Estimation (MUNE) and Quantitative EMG, 60 doi :10.1016/s1567-424x(08 )00006-8 , ISBN 9780444529091 PMID 20715368 , retrieved 2020-10-24
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Abductor_pollicis_brevis_muscle&oldid=1222229595 " C a t e g o r i e s : ● W i k i p e d i a a r t i c l e s i n c o r p o r a t i n g t e x t f r o m t h e 2 0 t h e d i t i o n o f G r a y ' s A n a t o m y ( 1 9 1 8 ) ● M u s c l e s o f t h e u p p e r l i m b ● U p p e r l i m b a n a t o m y H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a ● A r t i c l e s w i t h T A 9 8 i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 4 M a y 2 0 2 4 , a t 1 8 : 1 9 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
This article incorporates text in the public domain from page 461 of the 20th edition of Gray's Anatomy (1918)
