Little finger

The little finger or pinkie, also called the baby finger or pinky finger, is the smallest finger of the human hand.

Etymology
The word "pinkie" comes from the Dutch word pink, meaning "little finger".

The earliest known use of the word "pinkie" is from Scotland in 1808. The word (sometimes written "pinky") is common in Scottish English and American English, and is also used a lot in other Commonwealth countries such as New Zealand, Canada, and Australia.

Nerves and muscles
There are nine muscles that control the little finger:
Three in the hypothenar eminence, two extrinsic (outside the hand) flexors, two extrinsic extensors, and two more intrinsic (inside the hand) muscles:
 Hypothenar eminence:
 Opponens digiti minimi muscle
 Abductor minimi digiti muscle (adduction from third palmar interossei)
 Flexor digiti minimi brevis (the "longus" is absent in most humans)
 Two extrinsic flexors:
 Flexor digitorum superficialis
 Flexor digitorum profundus
 Two extrinsic extensors:
 Extensor digiti minimi muscle
 Extensor digitorum
 Two intrinsic hand muscles:
 Fourth lumbrical muscle
 Third palmar interosseous muscle
Note: the dorsal interossei of the hand muscles are not attached to the little finger


 References 

 Other websites