Final answer:
The hypothenar eminence is the muscle group at the base of the little finger, including the abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi, and it is vital for fine motor functions.
Step-by-step explanation:
The small pad of muscles at the base of the little finger is called the hypothenar eminence. This muscle group includes the abductor digiti minimi, flexor digiti minimi brevis, and the opponens digiti minimi, which all act on the little finger. The hypothenar eminence is a part of the intricate system of hand muscles that allows for precise movements, vital for actions like typing or writing. Located on the medial aspect of the palm, the hypothenar muscles are contrasted with the thenar muscles which are on the radial side and responsible for the movements of the thumb.