Palmar interossei muscles

The video discusses the Palmer interossei muscles, which are three unipennate muscles located in the metacarpus. These muscles originate from the metacarpal bones of the index, ring, and little fingers, and their surfaces face the middle finger. They insert at the dorsal aponeurosis and the base of the proximal phalanx. The deep branch of the ulnar nerve supplies these muscles, which primarily function to adduct the fingers towards the middle finger. They also flex the metacarpophalangeal joints and extend the interphalangeal joints. The video introduces a mnemonic to remember their function: 'dab' for dorsals abduct and 'pad' for Palmers adduct. Additional resources for learning anatomy are provided by Kenhub.

Which fingers do the Palmer interossei muscles primarily act upon?

• Fingers 2, 4, and 5

• Fingers 1, 3, and 5

• Fingers 1, 2, and 3

• Fingers 2, 3, and 4

Where do the Palmer interossei muscles insert?

• At the dorsal aponeurosis and base of the distal phalanx

• At the base of the middle phalanx

• At the dorsal aponeurosis and base of the proximal phalanx

• At the base of the distal phalanx

What is the primary nerve supply for the Palmer interossei muscles?

• Radial nerve

• Median nerve

• Deep branch of the ulnar nerve

• Superficial branch of the ulnar nerve

What is the main function of the Palmer interossei muscles?

• Extension of the elbow

• Abduction of the fingers

• Adduction of the fingers

• Flexion of the wrist

What mnemonic helps remember the function of the Palmer interossei muscles?

• PAD for Palmer adduct

• DAB for Dorsal abduct

• RAD for Radial adduct

• FAB for Flexor abduct