Final answer:
The outer ear comprises the pinna, ear canal, and tympanic membrane, which collect and conduct sound waves into the middle ear.
Step-by-step explanation:
The outer ear, also known as the external ear, consists of the pinna, ear canal, and tympanic membrane. Its main function is to collect and conduct sound waves into the middle ear. The pinna helps to direct the sound waves into the auditory canal, which leads to the tympanic membrane, or eardrum. When sound waves hit the eardrum, it vibrates and transfers these vibrations to the middle ear.