Blinking of the eyes when dust touches the cornea is an example of a
Correct answer: B. cranial reflex
- A. spinal reflex
- B. cranial reflex
- C. conditioned reflex
- D. hormonal reflex
Explanation
The reflex arc passes through the brain stem rather than the spinal cord, so it is classed as a cranial reflex. Spinal reflexes, such as knee jerk, are integrated in the spinal cord itself.
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About Receptors
Receptors are specialized cells or proteins that detect stimuli such as light, sound, pressure, temperature and chemicals, then initiate responses through sensory or hormonal pathways. Questions distinguish sensory receptors from effectors, compare receptor types, and examine stimulus conversion into nerve impulses, including the roles of rods, cones, chemoreceptors and mechanoreceptors.
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