Forearm Flexor Muscles

Anatomy · Upper limb anatomy

Muscle	Innervation	Layer
Flexor Carpi Ulnaris	Ulnar Nerve	Superficial
Flexor Digitorum Profundus	Ulnar & Median Nerve (anterior interosseous branch)	Deep
Pronator Teres	Median Nerve	Superficial
Flexor Digitorum Superficialis	Median Nerve	Superficial
Palmeris Longus	Median Nerve	Superficial
Flexor Pollicis Longus	Median Nerve (anterior interosseous branch)	Deep
Pronator Quadratus	Median Nerve (anterior interosseous branch)	Deep

When considering the forearm flexors one can think of them being split into a superficial and deep layer.
The deep layer consists of FDP, FPL and Pronator quadratus
The superficial layer consists of FCR, PL, FCU, PTand FDS

A useful video tutorial on forearm flexors can be seen below:

NOTE: The superficial layer share a common origin at the medial epicondyle.

Diagram illustrating the superficial and deep flexors of the forearm