Final answer:
The outer ear consists of the pinna, auditory canal, and tympanic membrane. These structures collect and channel sound waves into the middle ear.
Step-by-step explanation:
The three components of the outer ear are the pinna, the auditory canal, and the tympanic membrane (also known as the eardrum). The pinna is the part of the outer ear that is visible on the side of the head and functions to collect sound waves. The auditory canal is the passage through which sound waves travel until they reach the tympanic membrane, which vibrates upon impact with sound waves. These structures work together to conduct sound waves into the middle ear.