The retina contains _____. (Select all that apply)

Question

BlackTom AI · Accepted Answer

To tackle the question, I’ll evaluate what each term implies in the context of the retina and its cells.
Option A: Chemoreceptor cells. These are receptors that detect chemical stimuli (like taste or smell). They are not the primary cell type found in the retina, which focuses on light detection rather than chemical sensing, so this is not correct for the retina.
Option B: Exteroceptor cells. Exteroceptors detect external stimuli such as light, sound, or touch. The retina detects external light, so retinal cells can be considered exteroceptors in a broad sense. This option is correct.
Option C: Mechanoreceptors. Mechanoreceptors respond to mechanical forces (pressure, vibration). While the retina experiences mechanical forces, its primary specialized detector cells are photoreceptors, not mechanoreceptors. So this option is not correct.
Option D: Photoreceptor cells. These are the rods and cones in the retina that transduce light into neural signals. This is a direct, correct description of retinal cells. This option is correct.
Option E: Interceptor cells. Interceptors sense internal conditions within the body (like internal organs, blood pressure). The retina does not house these kinds of receptors for detecting internal milieu; thus this is incorrect.
In summary, the retina contains cells specialized for light detection (photoreceptors), and, in the broader sense of external stimulus detection, can be associated with exteroception. The remaining options describe receptor types not characteristic of retinal tissue.

BIOL 251 Module 8 Problem Set

The retina contains _____. (Select all that apply)

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Photoreceptors

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