Everyday Muscle.

Superficial Head of Flexor Pollicis Brevis

Hand
Part of the thenar eminence — that meaty pad at the base of your thumb.
Function
Flexes MCP joint of thumb
Origin
Flexor retinaculum and trapezium
Insertion
Base of proximal phalanx of thumb (lateral side via sesamoid)
Innervation
Recurrent branch of median nerve (C8-T1)
Learn this region Quiz this region
Flexor Digitorum Profundus Extensor Digitorum Extensor Indicis Flexor Pollicis Longus Extensor Pollicis Longus Extensor Pollicis Brevis Abductor Pollicis Longus Adductor Pollicis Opponens Pollicis Opponens Digiti Minimi (Hand)