Final answer:
The technical name for the hair of the head is 'capilli,' not to be confused with cilia, which are hairlike structures on cells involved in movement and clearance of mucus in the respiratory system.
Step-by-step explanation:
The technical name for the hair of the head is known as capilli. Cilia are short, hairlike projections on some cells, which are significantly different from head hair. The hair matrix, mentioned in the question, actually contains a layer of basal cells, which are responsible for the production of hair, among other options given.
It's important to note that cilia are found on eukaryotic cells and have a role in movement and in the respiratory system for clearing mucus, while 'capilli' refers to the hair on our head which provides functions such as protecting the scalp from UV radiation and aiding in temperature regulation.