When your finger accidentally gets caught in a door, the pain message is sent to your brain through:
Correct answer: B. Sensory receptors
- A. Homeostasis
- B. Sensory receptors
- C. Caffeine
- D. The medulla
Explanation
Sensory receptors, specifically nociceptors, are responsible for sending the pain message to the brain when a finger (or any other part of the body) is accidentally caught in a door or experiences a painful stimulus.Homeostasis refers to the body's ability to maintain internal stability and balance. It is not directly involved in sending pain messages to the brain.Caffeine is a stimulant that can affect the central nervous system, but it is not directly involved in the transmission of pain messages to the brain.The medulla is a part of the brainstem that is involved in regulating various autonomic functions, such as breathing and heart rate, and it is not directly involved in the transmission of pain messages.
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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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