What Registered Nurses Do. Registered nurses (RNs) provide and coordinate patient care, educate patients and the public about various health conditions, and provide advice and emotional support to patients and their family members. Registered nurses work in hospitals, physiciansâ offices, home healthcare services, and nursing care facilities.
The basic function of the outer ear or pinna is to protect the eardrum (tympanic membrane). The outer ear also functions to collect sound waves to the eardrum through the ear canal. The second component of the external ear is the auditory ear canal or meatus.
The outer ear also contains the ear canal and the ear drum (tympanic membrane). The middle ear: is the area behind the ear drum. This part of the ear is made of three movable bones called ossicles. The function of these three bones is to convert the sound wave (by striking the eardrum) into mechanical vibrations.