AEMCA Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 975

Where are nociceptors most concentrated in the human body?

In the chest and abdomen

In the fingers and toes

Nociceptors, which are sensory receptors responsible for detecting painful stimuli, are indeed most densely concentrated in areas of the body where quick reflexive responses to potential injury are critical. This is particularly true for the fingers and toes. These areas are highly sensitive because they often come into contact with potential hazards and require an immediate response to prevent tissue damage.

While nociceptors exist throughout the body, the concentration in the fingers and toes is heightened due to their role in detecting harmful stimuli and alerting the nervous system to initiate protective reflexes. Other body parts, such as the chest and abdomen, the brain and spine, and the liver and kidneys, do contain nociceptors but typically in fewer numbers relative to extremities, which are more exposed to environmental injuries and require a faster reaction from the body.

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In the brain and spine

In the liver and kidneys

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