Clinical Neurophysiology

NEUROEMBRYOLOGY | El Paso, TX.

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Neuroembryology: As an embryo all of the cells in the body are identical. But as time passes, some cells develop into neurons and others develop into skin, hair, or muscle cells.

Why do some cells become neurons? How do neurons become organized in the spinal cord and brain in order to allow us to walk, talk, see, recall life events, feel pain, keep balance, and think?

The answers will help us understand how we develop from an embryo into a full-grown person and how our body and brain constantly adapts, throughout our lives to the environments changes.

El Paso, TX. Chiropractor, Dr. Alexander Jimenez discusses neuroembryology, with the intent of educating patients, past and present, and the general public about the how the spine is connected to everything and where everything begins.

INTRODUCTION

  • Focusing attention on the development of the nervous system can increase a clinician’s insight into brain functionality and treatment possibilities.
  • Dysfunctions that may be associated with developmental abnormalities of the brain may range from a mild reduction in cortical function to conditions such as autism and schizophrenia.
  • The development of the nervous system is influenced by both endogenous and exogenous mechanisms.
  • Endogenous referring to genetics, exogenous referring to the embryo’s environment.
  • Development is an ongoing process….NEUROPLASTICITY

Neuroembryology: DEVELOPMENT

  • Development of the nervous system can first be identified at about 3 weeks after conception.
  • At 3 weeks, in response to underlying chemical signaling from the mesoderm, the neural plate forms, which quickly transitions into the neural groove.
  • At the beginning of the 4th week, the two folds forming the neural groove begin to fuse starting the formation of the neural tube
  • Fusion proceeds cranially and caudally and the entire neural tube is closed by the end of the 4th week.
  • This process is known as primary neurulation.
  • As the neural tube closes, it progressively separates from the ectodermal surfaceΒ and leaves behind neural crest cells.
  • Neural crest cells develop into the PNS.
  • The neural tube develops into virtually the entire CNS.

  • A longitudinal groove forms on the lateral wall of the neural tubeΒ during the fourth week of development
  • This is known as the sulcus limitans, which separates the tube into dorsal and ventral halves.
  • The gray matter of the dorsal half forms an alar plate and the ventral half forms a basal plate.
  • This distinction is of great functional importance because the alar plate plays a role in sensory processing and the basal plate plays a role in motor output.
  • This similarity is seen in the adult spinal cord with the posterior gray matter receiving sensory input and the anterior gray matter producing motor output.

THREE PRIMARY VESICLES

  1. Prosencephalon
  2. Mesencephalon
  3. Rhombencephalon

FIVE SECONDARY VESICLES

  1. Telencephalon
  2. Diencephalon
  3. Mesencephalon (remains unchanged)
  4. Metencephalon
  5. Myelencephalon

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ESTABLISHMENT OF NEURONAL CONNECTIONS

  • Neurons may have innate predetermined programs that lay out the basic patterns of connections to be formed initially in their development.
  • Theoretically, neurons gravitate to areas of attraction and move away from areas of repulsion – Chemoaffinity hypothesis
  • Several mechanisms allow axons to accurately find their way to their target destinations:
  • Selective axonal fasciculation
  • Axon substrate interactions
  • Axonal tropisms
  • Gradient effects

SYNAPTOGENESIS

  • Synaptogenesis
  • The formation of synapsis between neurons.
  • This is VERY important during the embryological development for good neuronal growth
  • Based on the laws of plasticity, if you don’t use it, you will lose it (or never really get it).

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NEUROPLASTICITY

  • There is both good and bad plasticity.
  • Good plasticity is adaptation to positive environmental stimulation.
  • Bad plasticity can be related to insult or injury to the nervous system or chronic pain pathways.

WHEN THINGS DON’T GO AS PLANNED!

CLINICAL SIGNIFICANCE OF NEURODEVELOPMENT

By RYAN CEDERMARK, DC DACNB RN BSN MSN

Neuroembryology: Prenatal Brain Development

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Neuroembryology: Development OfΒ  Nervous System

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The information herein on "NEUROEMBRYOLOGY | El Paso, TX." is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.

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Our information scope is limited to Chiropractic, musculoskeletal, acupuncture, physical medicines, wellness, contributing etiological viscerosomatic disturbances within clinical presentations, associated somatovisceral reflex clinical dynamics, subluxation complexes, sensitive health issues, and/or functional medicine articles, topics, and discussions.

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We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez, DC, or contact us at 915-850-0900.

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Blessings

Dr. Alex Jimenez DC, MSACP, RN*, CCST, IFMCP*, CIFM*, ATN*

email: coach@elpasofunctionalmedicine.com

Licensed as a Doctor of Chiropractic (DC) in Texas & New Mexico*
Texas DC License # TX5807, New Mexico DC License # NM-DC2182

Licensed as a Registered Nurse (RN*) in Florida
Florida License RN License # RN9617241 (Control No. 3558029)
Compact Status: Multi-State License: Authorized to Practice in 40 States*

Presently Matriculated: ICHS: MSN* FNP (Family Nurse Practitioner Program)

Dr. Alex Jimenez DC, MSACP, RN* CIFM*, IFMCP*, ATN*, CCST
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