Summary Lumbricals (4 muscles) Origin FDP tendon Insertion Radial lateral band of the extensor expansion (tendon) Action Extends PIP and DIP joint. Innervation 1st & 2nd lumbricals: median nerve. 3rd & 4th lumbricals: ulnar nerve Arterial supply Palmar metacarpal arteries
QUESTIONS 1 of 1 1 Previous Next (OBQ08.3) Which of the following unipennate muscles takes its origin on the radial side of the profundus tendon, inserts on the radial lateral band at the middle phalanx, and creates a force vector that is palmar to the joint axis of the metacarpophalangeal joint? QID: 389 Type & Select Correct Answer 1 1st lumbrical 65% (2918/4479) 2 1st dorsal interosseous 7% (325/4479) 3 4th dorsal interosseous 3% (146/4479) 4 4th lumbrical 19% (833/4479) 5 4th palmar interosseous 5% (224/4479) L 3 Question Complexity D Question Importance Select Answer to see Preferred Response SUBMIT RESPONSE 1 Review Tested Concept Review Full Topic
All Videos (0) Podcasts (2) Anatomy⎪Lumbrical Muscles Anatomy - Lumbrical Muscles Listen Now 4:52 min 2/17/2021 16 plays 0.0 (0) Anatomy⎪Lumbrical Muscles Anatomy - Lumbrical Muscles Listen Now 4:52 min 2/23/2021 37 plays 0.0 (0)