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Lessons from Amphioxus Bauplan About Origin of Cranial Nerves of Vertebrates That Innervates Extrinsic Eye Muscles
Anatomical record (Hoboken, N.J. : 2007), 2019-03, Vol.302 (3), p.452-462
Ferran, José Luis
Puelles, Luis
2019
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Ferran, José Luis
Puelles, Luis
Titel
Lessons from Amphioxus Bauplan About Origin of Cranial Nerves of Vertebrates That Innervates Extrinsic Eye Muscles
Ist Teil von
Anatomical record (Hoboken, N.J. : 2007), 2019-03, Vol.302 (3), p.452-462
Ort / Verlag
United States: Wiley Subscription Services, Inc
Erscheinungsjahr
2019
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
ABSTRACT Amphioxus is the living chordate closest to the ancestral form of vertebrates, and in a key position to reveal essential aspects of the evolution of the brain Bauplan of vertebrates. The dorsal neural cord of this species at the larval stage is characterized by a small cerebral vesicle at its anterior end and a large posterior region. The latter is comparable in some aspects to the hindbrain and spinal cord regions of vertebrates. The rostral end of the cerebral vesicle contains a median pigment spot and associated rows of photoreceptor and other nerve cells; this complex is known as “the frontal eye.” However, this is not a complete eye in the sense that it has neither eye muscles nor lens (only a primitive retina‐like tissue). Cranial nerves III, IV, and VI take part in the motor control of eye muscles in all vertebrates. Using a recent model that postulates distinct molecularly characterized hypothalamo‐prethalamic and mesodiencephalic domains in the early cerebral vesicle of amphioxus, we analyze here possible scenarios for the origin from the common ancestor of cephalochordates and vertebrates of the cranial nerves related with extrinsic eye muscle innervations. Anat Rec, 302:452–462, 2019. © 2018 Wiley Periodicals, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 1932-8486
eISSN: 1932-8494
DOI: 10.1002/ar.23824
Titel-ID: cdi_proquest_miscellaneous_2025799807
Format
–
Schlagworte
abducens nerve
,
Animals
,
Biological Evolution
,
Brain - cytology
,
Brain - physiology
,
Cranial nerves
,
Cranial Nerves - cytology
,
Cranial Nerves - physiology
,
Eye lens
,
frontal eye
,
Gene Expression Regulation, Developmental
,
Hindbrain
,
Lancelets
,
Motor task performance
,
Muscles
,
Nervous System - cytology
,
Oculomotor Muscles - cytology
,
Oculomotor Muscles - innervation
,
Oculomotor Muscles - physiology
,
oculomotor nerve
,
prechordal mesoderm
,
Retina
,
Skull
,
Spinal cord
,
trochlear nerve
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