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.
There are three components of the ear subserving hearing function: outer ear, middle ear, inner ear. The outer ear consists of the pinna, which collects sound waves, and the external auditory meatus, ending at the tympanic membrane. Internal to this tympanic membrane is the middle ear containing three bones, the malleus, incus and stapes.