What is true about the distribution of rods and cones in the retina?

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Question 1 of 5

What is true about the distribution of rods and cones in the retina?

Correct Answer: D

Rationale: The fovea is cone-dominated (few rods), periphery is rod-rich; the photoreceptor-to-RGC ratio is high in the periphery due to convergence.

Question 2 of 5

In the baseball area of your cortex, your 'Red Soxneurons have smaller receptive fields than your 'Yankeesneurons. Based on the cortical magnification hypothesis

Correct Answer: B

Rationale: Smaller receptive fields (Red Sox) indicate higher cortical magnification, meaning more cortex is devoted to them.

Question 3 of 5

A client receiving cyclosporine must be taught which of the following?

Correct Answer: B

Rationale: Cyclosporine’s main side effect is nephrotoxicity (text note). Dark urine and jaundice (B) indicate liver/kidney issues needing reporting.

Question 4 of 5

A client in ICU has a leaking cerebral aneurysm. What’s the earliest sign of increased ICP?

Correct Answer: A

Rationale: Decreased LOC (A) is the earliest ICP sign (text chart 46).

Question 5 of 5

During shift report, a client with head injury has decorticate posturing. Which position will the nurse expect?

Correct Answer: C

Rationale: Decorticate: arms flexed, legs extended (typically figure 2, C assumed per context).

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