Final answer:
A human hand has 14 phalanges, with the thumb containing two and each of the other four digits containing three.
Step-by-step explanation:
In a single human hand, there are a total of 14 phalanges, which are the bones in the fingers and thumb. The thumb, being digit number 1, has two phalanges – a proximal and a distal phalanx.
The rest of the digits, from 2 to 5 (index to little finger), each have three phalanges – the proximal, middle, and distal. Therefore, for digits 2 through 5 there are 3 phalanges each, totaling 12, and adding the 2 from the thumb gives a total of 14 for one hand.