The nurse is conducting a visual examination. Which of these statements regarding visual pathways and visual fields is true?
a. The right side of the brain interprets the vision for the right eye.
b. The image formed on the retina is upside down and reversed from its actual appearance in the outside world.
c. Light rays are refracted through the transparent media of the eye before striking the pupil.
d. Light impulses are conducted through the optic nerve to the temporal lobes of the brain.
ANS: B
The image formed on the retina is upside down and reversed from its actual appearance in the outside world. The light rays are refracted through the transparent media of the eye before striking the retina, and the nerve impulses are conducted through the optic nerve tract to the visual cortex of the occipital lobe of the brain. The left side of the brain interprets vision for the right eye.
You might also like to view...
A nurse plans to teach a client about a newly prescribed medication. Which of these nursing interventions would BEST assist the client in learning?
a. withholding any pain medication so the client can concentrate better b. ensuring that the client is in a comfortable position and does not have to go to the bathroom c. scheduling sessions after activities such as physical therapy so the client will be relaxed d. planning teaching sessions before bed so the client can retain information before sleep
The newly diagnosed client with breast cancer asks the nurse if they diagnosed the cancer too late, since the surgeon recommended surgery and radiation therapy. The appropriate response by the nurse would be:
1. "Chemotherapy is only used in the first stage." 2. "Surgery and radiation are recommended in the later stages of breast cancer." 3. "Surgery and radiation are recommended in cancer that has not metastasized." 4. "You need to discuss that with your doctor."
The nurse is performing a physical exam on a 9-year-old boy who complains of a stiff neck and pain in his arms and legs. He has never been vaccinated for polio. Which of the following assessment findings would suggest the child has polio?
A) Swelling in the neck B) Confusion and anxiety C) Positive Kernig's sign D) Conjunctivitis
Ordered: dexamethasone 500 mcg PO bid, for a patient with a severe inflammatory condition. Available: a. What is the trade name for this medication?How many tablets will the nurse prepare?
b. Estimated dose: c. DA equation: d. Evaluation: