During an assessment of the ear structures, the nurse would expect to identify which structure as part of the middle ear?
Tympanic Membrane
Ear lobe
Cochlea
Pinna
The Correct Answer is A
Choice a reason:
The tympanic membrane, also known as the eardrum, is a critical component of the middle ear. It is a thin membrane that separates the external ear from the middle ear and vibrates in response to sound waves. These vibrations are then transmitted to the ossicles within the middle ear, which amplify and carry the sound to the inner ear.
Choice b reason:
The ear lobe is part of the external ear, not the middle ear. It is composed of soft skin and fatty tissue and does not play a role in hearing. The ear lobe serves primarily as a site for body decoration such as earrings.
Choice c reason:
The cochlea is a structure located in the inner ear. It is a spiral-shaped organ that contains the organ of Corti, the sensory organ of hearing. The cochlea converts the mechanical vibrations from the middle ear into nerve impulses that are sent to the brain.
Choice d reason:
The pinna, or auricle, is the visible part of the external ear. It is made of cartilage and skin and functions to capture sound waves and direct them into the ear canal towards the tympanic membrane.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Angular cheilitis is characterized by inflammation of one or both corners of the mouth. It often presents as red, swollen patches in the corners of the mouth and can be associated with fungal or bacterial infection. However, it does not typically cause vesicular eruptions, which are more indicative of viral infections like herpes simplex.
Choice B Reason:
Herpes simplex virus (HSV) is known for causing vesicular eruptions, commonly referred to as cold sores or fever blisters, around the lips and mouth area. These eruptions are fluid-filled blisters that can be painful and are highly indicative of an HSV infection, particularly HSV type 1, which commonly affects the oral region.
Choice C Reason:
Angioedema involves the rapid swelling of the deeper layers of the skin, often seen with hives. While it can affect the lips and surrounding areas, it does not cause vesicular eruptions. Angioedema is more associated with allergic reactions and can be part of anaphylaxis, a severe systemic reaction.
Correct Answer is C
Explanation
Choice a reason:
Assisting the client to a sitting position is not the best action to ensure that bowel sounds can be heard. For abdominal auscultation, the patient should be lying down in a supine position to relax the abdominal muscles, which facilitates the hearing of bowel sounds.
Choice b reason:
Percussion of the abdomen before auscultation is not recommended as the best initial action. Percussion can stimulate bowel motility, which may alter the natural bowel sounds that the nurse is attempting to assess.
Choice c reason:
Reducing all environmental noise is the best action to ensure that bowel sounds can be heard clearly. Environmental noise can mask the subtle sounds of bowel motility, and minimizing distractions allows for a more accurate assessment of bowel activity.
Choice d reason:
Palpating the region before auscultating is not the best action because palpation can also stimulate bowel motility and potentially alter the bowel sounds. Auscultation should be performed before palpation during the abdominal examination to avoid this issue.
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