The Circadian Rhythm Is Reset by Input from Special Ganglion

question 117

Multiple Choice

 The circadian rhythm is reset by input from special ganglion cells in the retina. These ganglion cells are unusual in that they ____.

• A) receive input from only cones, not rods
• B) are located only in a doughnut-shaped band surrounding the fovea
• C) respond directly to light, but respond very slowly
• D) become active only at night or in very dim light

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Definitions:

Asexual Reproduction

The generation of offspring without the fusion of gametes, resulting in genetically identical copies of the parent.

Prostate Gland

A gland in male animals that produces an alkaline secretion that is part of the semen.

Parthenogenesis

A mode of reproduction in which offspring are produced by a female without male contribution, often involving the development of embryos from unfertilized eggs.

Seminal Fluid

A viscous fluid produced by male reproductive organs, containing spermatozoa and various compounds that support fertility and sperm viability.