Nociceptors are sensory receptors that are activated by:
A) Cortisol
B) Noxious stimuli
C) Pressure and touch
D) Sudden movements
Ans: B
Feedback:
Nociceptors, or pain receptors, are sensory receptors that are activated by noxious insults to peripheral tissues and respond to several forms of painful stimulation, including mechanical, thermal, and chemical. Nociceptive stimuli are objectively defined as stimuli of such intensity that they cause or are close to causing tissue damage. Hormones do not activate nociceptors. Pressure, touch, and startle are not considered painful stimuli unless sufficiently extreme to elicit the reflexive withdrawal response.
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