Physiology · Sensory System · Hard
Phototransduction
Meaning: The process by which retinal cells convert light into electrical signals.
In practice: Phototransduction begins when light changes the shape of the visual pigment in rods and cones.
Quick check
Two questions on related physiology words.
Which word means: A hormone made by the pineal gland in darkness that helps regulate the sleep-wake cycle.
Answer: Melatonin
Which word means: The physiological breakdown of blood clots by enzymes once healing is under way.
Answer: Fibrinolysis
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