What cranial nerve is responsible for the taste sensation of the posterior third of the tongue?

Choice A reason:
Peripheral vision is the ability to see objects and movement outside of the direct line of vision. This type of vision is assessed using different methods, such as confrontation visual field testing, where the examiner moves objects into the patient's side vision from different angles. Standing 20 feet away from a chart would not be the appropriate method to assess peripheral vision.
Choice B reason:
The assessment of external eye structures involves examining the physical appearance and condition of the eyelids, sclera, conjunctiva, and surrounding areas. This is typically done at a close range and does not require the patient to stand at a distance from a chart. The nurse would inspect these structures directly, often with the aid of a penlight for better visibility.

Choice C reason:
Distant vision is the ability to see objects far away, and it is what the nurse is preparing to assess when the client is asked to stand 20 feet from a chart. This distance is standard for the Snellen eye chart, which is used to measure visual acuity. The chart has rows of letters that decrease in size, and the patient is asked to read the smallest line of letters they can see clearly. The Snellen chart is the most common method used by eye doctors to measure visual acuity.
Choice D reason:
Near vision is the ability to see objects that are close to the eyes clearly. It is assessed using different charts, such as the Jaeger eye chart, which contains blocks of text in various type sizes. The patient is asked to read the text at a close range, typically around 14 inches, not 20 feet. Therefore, standing 20 feet away from a chart would not be the method to assess near vision.

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.