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 function of the outer ear is to collect sound waves and guide them to the tympanic membrane. The middle ear is a narrow, air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bonesâthe malleus (hammer), incus (anvil), and stapes (stirrup), collectively called the auditory ossicles.