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 is called the pinna, or the auricle. The human outer ear is not designed as efficiently as the ears of most other animals, so humans do not hear as well. In humans, the auricle is rather rudimentary, attached flat against the side of the head and connected by small ligaments and muscles.