Touch and pain

Directions:
Select the BEST response alternative for each of the questions below.


1. SAI mechanoreceptors are slow-adapting receptors using Merkel cells, with small receptive fields, densely packed near the surface of skin.
A) True.
B) False.
2. FAII mechanoreceptors are fast-adapting receptors with Pacinian corpuscle endings and large receptive fields, more widely distributed and deeper in the skin.
A) True.
B) False.
3. Jorge senses that his calf muscle is stretched out. His body detects this from joint receptors in his knee and ankle.
A) True.
B) False.
4. Muscle spindles are receptors in the tendons that measure the force of a muscle's contraction.
A) True.
B) False.
5. There is a class of receptors called thermoreceptors that signal very strongly at both very high temperatures and at very cold temperatures.
A) True.
B) False.
6. A-delta fibers are myelinated nociceptors that conduct signals rapidly and respond to both heat and pressure.
A) True.
B) False.
7. The dorsal column-medial lemniscal pathway is a pathway for the nociceptors (pain) and thermoreceptors (temperature) that travels up the contralateral side of spinal column and does not synapse in the brain until the ventral posterior nucleus of the thalamus.
A) True.
B) False.
8. Gate control theory is a model that allows for top-down control of the pain signal coming up the spinal cord.
A) True.
B) False.
9. Pruriceptors are receptors in our skin that respond to mild irritants by producing itch sensations.
A) True.
B) False.
10. Passive electroreception is the ability to generate electric fields and then detect disturbances or changes to those electric field caused by external events.
A) True.
B) False.


End of Quiz!

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The correct answers are marked by a "C" in the box before each question. The incorrect questions are marked by an "X".