Which of the following areas of the brain regulates the detection of pain impulses?
Which of the following areas of the brain regulates the detection of pain impulses?
Most notably, the insula and anterior cingulate cortex are consistently activated when nociceptors are stimulated by noxious stimuli, and activation in these brain regions is associated with the subjective experience of pain.
Which neural pathway is the primary projection pathway for pain signals arising from below the neck?
The dorsal column system is primarily responsible for touch sensations and proprioception, whereas the spinothalamic tract pathway is primarily responsible for pain and temperature sensations.
What category of receptors do Pacinian corpuscles belong to?
Pacinian corpuscle or lamellar corpuscle or Vater-Pacini corpuscle; is one of the four major types of mechanoreceptors (specialized nerve ending with adventitious tissue for mechanical sensation) found in mammalian skin.
What are the only receptors in visceral organs that produce sensations?
Pain receptors are the only receptors in viscera that produce sensations.
How does the brain detect pain?
A pain message is transmitted to the brain by specialized nerve cells known as nociceptors, or pain receptors (pictured in the circle to the right). When pain receptors are stimulated by temperature, pressure or chemicals, they release neurotransmitters within the cells.
How does the brain feel pain?
These specialized fibers — which are located in skin, muscles, joints, and some organs — transmit pain signals from the periphery to the brain, where the message of pain is ultimately perceived. The brain itself does not feel pain because there are no nociceptors located in brain tissue itself.
Which type of receptor is involved in the sensation of pain?
The pain receptors are nociceptors. They are known to exist in muscle, joints, and skin. Each nociceptor has selective sensitivity to mechanical (muscle-fiber stretching), chemical (including lactic acid), and thermal stimuli.
What is visceral pain?
Visceral pain is pain related to the internal organs in the midline of the body. Unlike somatic pain — pain that occurs in tissues such as the muscles, skin, or joints — visceral pain is often vague, happens every so often, and feels like a deep ache or pressure.
What are visceral receptors?
Visceral receptors are generally free nerve endings (although Pacinian corpuscles are present in viscera). A network of Autonomic Control Centers process & relay visceral input and regulates visceral activity via descending projection neurons (premotor neurons) to preganglionic nuclei.