PSYC 2200 Lecture Notes - Lecture 5: Dorsal Root Ganglion, List Of Lumbar Nerves, Ovulation
4 Sep 2020
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We have a dorsal root ganglion but not a ventral root ganglia. Sympathetic division is stimulated by fear/stress and promotes emergency functions. Prepares body to use all its oxygen and energy to run/fight (fight or flight) very activational. To accomplish this, homeostatic functions (such as food digestion, energy storage, ovulation) are put on hold thoracic /lumbar nerves. Through spinal nerves coming from thoracic and lumbar regions. Ganglia are located just outside of spinal column. Calms the body and diverts oxygen and energy to promote homeostatic functions cranial/sacral nerves. Ganglia are peripheral to (outside) the spinal column. Through spinal nerves coming from cranial and sacral. Exercise- like yoga- can bootstrap the parasympathetic system with slow, regular breathing. Long term effects include improved circulation, muscle tone, digestion. Some evidence suggests meditation can also enhance brain activity patterns associated with calm (parasympathetic activation) During development the neural tube develops into the forebrain, midbrain, hindbrain and spinal cord by 40 days.
