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What will happen if there are lesions in the sensory pathways?
RedGuitar168
Parts of body that are affected by lesions depend on the sites and sides of lesions.
- If it happens after the sensory decussation (for example, at Medial Lemniscus or Internal capsule), it will cause the loss of sensations in the opposite side of the body. For instance, any damages to the left internal capsule will cause the loss of sensations of the right side of your body, including upper and lower limbs.
- If it happens before the sensory decussation (for example, at dorsal column of spinal cord), it will cause the loss of sensations from the level of lesion and below, in the same side of the body. For instance, any damages to left dorsal column in T12 spinal segment will cause the loss of sensations in the left side of your body from the level of lesion and below (which means, in this case, inlcuding the lower limbs only, but not upper limbs)
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∙ 13y ago
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What pathways do sensory signals take from the periphery to the highest levels?
by afferent and efferent path ways
What are the somatic receptors?
Somatic receptors are a specialized type of receptor located near the surface of the body. These cells detect passive types of environmental stimuli, such as temperature, air currents, and barometric pressure. The receptors transmit the information to the sensory pathways via action potentials. The sensory pathways deliver the somatic (and visceral) information to the central nervous system.
Describe the neural pathway beginning with the sensory receptors and ending with the cortex?
There are multiple pathways by which information from sensory receptors reaches the cerebral cortex. These pathways vary based on the type of information carried. For example, information from the body about pain and temperature travels via a pathway called the anterolateral system; information from the body about conscious body position sense and fine touch travels through the dorsal column-medial lemniscus system. Unconscious sensation of body position has its own pathways. The face has a separate set of pathways that mirror those for the rest of the body.
What does a system consist of?
A sensory system includes the sensory receptors, neural pathways, and the parts of the brain which are involved in sensory perception. The senses act as the transducers from the physical world to the mind where the information gathered by the senses is interpreted.
What does the nervous system provide?
Regulation by the nervous system provides resilience to the body. Staying calm and engaged helps with nervous system regulation in order to stay healthy.
Do sensory pathways travel to or from the brain?
Sensory pathways tavel to the brain.
What is an internueron?
A cell that connects sensory and motor pathways for reflexes.
Ascending pathways in the spinal cord convey what?
Sensory information
What are the four Parts of the Sensory Pathway?
Sensory pathways function to provide us with information about our environment. The four parts of the sensory pathway are receptors, sensory neurons, sensory tracts, and sensory areas of the brain.
What are sensory pathways that are located in the spinal cord or brain referred to?
Nerves
Do Second-order neurons of ascending sensory pathways always decussate.?
No! Only neurons of the specific (lemniscal) & non-specific (anterolateral) pathways decussate and sensation is therfore interpreted in the opposite cerebral hemisphere.Spinocerebellar ascending pathways transmit proprioceptive sensory stimuli to the same side of the cerebellum.
When did Pathways into Darkness happen?
Pathways into Darkness happened in 1993.
What is needed for a sensation to take place?
Intact sensory nerve pathways - all the way to the relevant area of the sensory cortex of the cerebrum - are needed.
What does a sensory system include?
A sensory system includes the sensory receptors, neural pathways, and the parts of the brain which are involved in sensory perception. The senses act as the transducers from the physical world to the mind where the information gathered by the senses is interpreted.
What pathways do sensory signals take from the periphery to the highest levels?
by afferent and efferent path ways
Silent area of brain?
An area of the cerebral or cerebellar surface on which lesions cause no sensory or motor symptoms.
What are the two pathways by which messages are transmitted?
1 sensory organ - sensory nerves - spinal cord - brain 2 brain - motor nerves - spinal cord - muscles
