Check out our tutorial on the lumbricals of the hand, a group of intrinsic muscles, which flex the metacarpophalangeal joints and extend the interphalangeal joints. Get more quick facts here:
https://khub.me/y3l37
Oh, are you struggling with learning anatomy? We created the ★ Ultimate Anatomy Study Guide ★ to help you kick some gluteus maximus in any topic. Completely free. Download yours today:
https://khub.me/6n1ay
The lumbrical muscles (lumbricidae - Latin = earthworm) are four short hand muscles located in the metacarpus deep to the palmar fascia. One feature of these muscles is that they originate from tendons instead of bony structures, making their origin surfaces quite moveable.
Usually their origin is found on the radial side of the tendons of the flexor digitorum profundus. In addition, the third and fourth lumbrical muscles have a second head attached to the ulnar side of the adjacent tendon. Distally, their insertion tendons attach to the dorsal aponeurosis of the respective finger.
The first two lumbricals are supplied by the median nerve (C8-Th1), whereas the ulnar nerve (C8-Th1) is responsible for the innervation of the third and fourth.
0:23 Origin & insertion of the lumbrical muscles
0:55 Innervation of the lumbrical muscles
1:10 Functions of the lumbrical muscles
Want to test your knowledge on the intrinsic muscles of the hand? Take this quiz:
https://khub.me/lv5ea
Read more on the lumbrical muscles of the hand right here in this article:
https://www.kenhub.com/en/library/ana...
For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/ig0cy
Lumbrical muscles of the Hand - Origin, Insertion & Function - Anatomy | Kenhub | |
| 379 Likes | 379 Dislikes |
| 48,523 views views | 362,346 followers |
| Education | Upload TimePublished on 17 Jun 2015 |
Không có nhận xét nào:
Đăng nhận xét