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The brain and spinal cord communicates with what is occurring in the internal organs and limbs by nerve fibers where are like electrical wires with insulation (myelin) and the "copper" (axon). Within brain and spinal cord these nerves connect to other nerves via synapses on both axons and dendrites. A nerve can carry information regarding sensations, and ...Read more
Neural tube vs DNC: Same thing. Read about Neural Tube. You'll learn more ! Read about the sonic hedgehog and how it influences the development of the ventral portions of the neural tube. This is amazing stuff. We've learned a lot about the nitty gritty of embryology in the past 5 years ! ...Read more
Notochord: notochord is formed on day 17 gestation this then secretes signalling molecules like SHH protien that induces overlying ectoderm to neuroectoderm this produces precurser cells for neural structures in the embrayo the notochord then forms the axis of developing vertebral body in the developing embrayo during primary nurulation the neuroectoderm forms a neural tube and spinal tube ...Read more
Ft dr said L leg/ft pain is dorsal nerve. nerve root sleeve cyst s1 or 2. Gabapentin no help. also severe rectal pain when asleep and pelvic pain.
Lets you feel things: The nerve root has 2 "ganglions". The dorsal root is on the posterior side of the nerve (closer to your back) and carries the fibers that allow you to feel things in your extremities (for example: pain, temperature, vibration). The information is transmitted to your brain so you understand what type of sensation is being encountered by the extremity. ...Read moreSee 1 more doctor answer
What will happen if an injury cuts the dorsal root of a spinal nerve that carries feelings of pain?
Numbness: The dorsal (posterior, toward the back) root carries sensation nerve fibers: feeling of light touch, vibration, sense of position (movement or where the arm or leg or joint is), pain. However, there is much overlap between the area serves by a single nerve, so there may not be total loss of sensation, depending on how the person is "wired.". ...Read moreSee 1 more doctor answer
A homework question?: You're 34 so I'm guessing it's not a homework question. I just did a web search using your question & got a great profusion of hits. Don't take offense, but HealthTap docs do this to apply medical reasoning to posters' questions, not so they can regurgitate facts that anyone, physician or nonphysician, can look up for themselves. ...Read more