Upper Extremity: Bones, Muscles, Arteries, Veins and Nerves - Flexor Pollicis Brevis Muscle - Origins & Function - Human Anatomy | Kenhub

This video covers the most important muscle facts on the anatomy of the flexor pollicis brevis muscle, one of the four thenar muscles: origin, insertion, innervation, function. Take our quiz about the thenar muscles of the hand: https://khub.me/rc5ru 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/p1t4n The flexor pollicis brevis muscle is one of the four (some sources only count three) thenar muscles of the hand located on the radial side of the palm. Together they form the thenar eminence. The thenar musculature consists of the: - abductor pollicis brevis - flexor pollicis brevis - opponens pollicis - adductor pollicis (not always counted as a thenar muscle) They originate at different carpal bones and distally attach to the thumb. The flexor pollicis brevis has a superficial head and a deep head. The superficial head originates from the flexor retinaculum, whereas the deep head has its origin on the capitate and trapezium bones. Together they insert on the base of the proximal phalanx of the thumb. The flexor pollicis brevis receives a double innervation by the median nerve and the ulnar nerve and is mainly responsible for flexing the thumb at the carpometacarpal joint. In this tutorial we will take a look at the most important anatomy facts of this muscle: - 0:10 thenar muscles - 0:38 flexor pollicis brevis origin and insertion - 1:06 innervation by the median nerve and ulnar nerve - 1:38 flexor pollicis brevis action Want to prepare for your exam for the topic wrist and hand? Use our exam question quiz including clinical scenarios for this topic: https://khub.me/h36x0 Read more about the thenar muscle group in our free article , if you don't feel ready for a quiz yet, or if you want to expand your knowledge about these muscles first: https://khub.me/06wsn For more engaging video tutorials, interactive quizzes, articles and an atlas of Human anatomy and histology, go to https://khub.me/pw6ak