Neironu ceļš

Neironu ceļš neiroanatomijā ir savienojums, ko veido aksoni, kas projicē no neironiem, lai izveidotu sinapses uz neironiem citā vietā, lai nodrošinātu neirotransmisiju (signāla nosūtīšanu no viena nervu sistēmas reģiona uz citu). Neironi ir savienoti ar vienu aksonu vai aksonu saišķi, kas zināms kā nervu trakts vai fasciculus.^[1] Īsāki nervu ceļi ir atrodami smadzeņu pelēkajā vielā, savukārt garākas projekcijas, kas sastāv no mielinizētiem aksoniem, veido balto vielu.

Hipokampā ir iesaistīti neironu ceļi, tostarp perforācijas ceļš, kas nodrošina savienojuma ceļu no entorinālās garozas^[2] uz visiem hipokampu veidošanās laukiem, tostarp gyrus dentatus, visiem CA laukiem (ieskaitot CA1),^[3] un subiculum.

Piramīdas trakta lejupejošie motoriskie ceļi virzās no smadzeņu garozas uz smadzeņu stumbra vai muguras smadzeņu lejasdaļu.^[4]^[5] Augšupejošie sensorie trakti muguras kolonnas – mediālā lemniska ceļā (DCML) pārnēsā informāciju no perifērijas uz smadzeņu garozu.

Atsauces

↑ Keith Moore, Arthur Dalley. Clinically Oriented Anatomy (5th izd.). LWW, 2005. 47. lpp. ISBN 0-7817-3639-0. A bundle of nerve fibers (axons) connecting neighboring or distant nuclei of the CNS is a tract.
↑ Witter, Menno P.; Naber, Pieterke A.; Van Haeften, Theo; Machielsen, Willem C.M.; Rombouts, Serge A.R.B.; Barkhof, Frederik; Scheltens, Philip; Lopes Da Silva, Fernando H. (2000). "Cortico-hippocampal communication by way of parallel parahippocampal-subicular pathways". Hippocampus 10 (4): 398–410. doi:10.1002/1098-1063(2000)10:4<398::AID-HIPO6>3.0.CO;2-K. PMID 10985279.
↑ Vago, David R.; Kesner, Raymond P. (2008). "Disruption of the direct perforant path input to the CA1 subregion of the dorsal hippocampus interferes with spatial working memory and novelty detection". Behavioural Brain Research 189 (2): 273–83. doi:10.1016/j.bbr.2008.01.002. PMC 2421012. PMID 18313770.
↑ Dale Purves. Neuroscience (5. izd.). Sunderland, Mass. : Sinauer, 2011. 375–378. lpp. ISBN 9780878936953.
↑ Purves, Dale; Augustine, George J.; Fitzpatrick, David; Katz, Lawrence C.; LaMantia, Anthony-Samuel; McNamara, James O.; Williams, S. Mark (1 January 2001) (en). Damage to Descending Motor Pathways: The Upper Motor Neuron Syndrome.

Ārējās saites

[1] Keith Moore, Arthur Dalley. Clinically Oriented Anatomy (5th izd.). LWW, 2005. 47. lpp. ISBN 0-7817-3639-0. A bundle of nerve fibers (axons) connecting neighboring or distant nuclei of the CNS is a tract.

[pmid10985279-2] Witter, Menno P.; Naber, Pieterke A.; Van Haeften, Theo; Machielsen, Willem C.M.; Rombouts, Serge A.R.B.; Barkhof, Frederik; Scheltens, Philip; Lopes Da Silva, Fernando H. (2000). "Cortico-hippocampal communication by way of parallel parahippocampal-subicular pathways". Hippocampus 10 (4): 398–410. doi:10.1002/1098-1063(2000)10:4<398::AID-HIPO6>3.0.CO;2-K. PMID 10985279.

[pmid18313770-3] Vago, David R.; Kesner, Raymond P. (2008). "Disruption of the direct perforant path input to the CA1 subregion of the dorsal hippocampus interferes with spatial working memory and novelty detection". Behavioural Brain Research 189 (2): 273–83. doi:10.1016/j.bbr.2008.01.002. PMC 2421012. PMID 18313770.

[Sinauer-4] Dale Purves. Neuroscience (5. izd.). Sunderland, Mass. : Sinauer, 2011. 375–378. lpp. ISBN 9780878936953.

[Purves-5] Purves, Dale; Augustine, George J.; Fitzpatrick, David; Katz, Lawrence C.; LaMantia, Anthony-Samuel; McNamara, James O.; Williams, S. Mark (1 January 2001) (en). Damage to Descending Motor Pathways: The Upper Motor Neuron Syndrome.

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