PMID- 2324316
OWN - NLM
STAT- MEDLINE
DCOM- 19900521
LR  - 20071114
IS  - 0021-9967 (Print)
IS  - 0021-9967 (Linking)
VI  - 292
IP  - 4
DP  - 1990 Feb 22
TI  - Vomeronasal and olfactory nerves of adult and larval bullfrogs: I. Axons and the 
      distribution of their glomeruli.
PG  - 614-23
AB  - The distribution of primary olfactory and vomeronasal (VMN) glomeruli is 
      demonstrated in the forebrain of the larval (stage III tadpole) and adult 
      bullfrog. Olfactory glomeruli are massed at the anterior end of the olfactory 
      bulb; farther posterior, they are located at the periphery and then become 
      distributed in a superficial layer all along the ventral surface of the bulb. 
      Glomeruli of the accessory olfactory bulb (AOB) of the tadpole are less compact 
      and show larger dendritic profiles and fewer synaptic junctions per unit area 
      than those of the adult AOB. Axons of both tadpole and adult VMN nerve are 
      ultrastructurally indistinguishable from those of the primary olfactory nerve; in 
      comparing VMN axons of tadpole and adult, however, differences were observed in 
      the number of neurofilament profiles in axons at the proximal and distal ends of 
      the VMN nerve. Counts of neurofilament profiles in the two ends of the nerve 
      suggest that neurofilament segments accumulate near terminations of their axons. 
      The VMN nerve of tadpole and adult frog are roughly the same size, and 
      calculations indicate that they contain comparable numbers of axons. The primary 
      olfactory nerve of the tadpole is estimated to contain about 660,000 axons; the 
      adherent VMN nerve of the tadpole contains about 270,000 axons (a ratio of about 
      2.5:1). In the adult, the ratio of primary to VMN axons is about 64:1, reflecting 
      the quantitative growth of the primary olfactory nerve with development from an 
      aquatic tadpole to an air-breathing adult.
FAU - Burton, P R
AU  - Burton PR
AD  - Department of Physiology and Cell Biology, University of Kansas, Lawrence 66045.
FAU - Coogan, M M
AU  - Coogan MM
FAU - Borror, C A
AU  - Borror CA
LA  - eng
GR  - NS 25518/NS/NINDS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - J Comp Neurol
JT  - The Journal of comparative neurology
JID - 0406041
SB  - IM
MH  - Animals
MH  - Axons/physiology/ultrastructure
MH  - Larva
MH  - Microscopy, Electron
MH  - Nasal Septum/*cytology/growth & development
MH  - Olfactory Bulb/*cytology/growth & development
MH  - Rana catesbeiana/*anatomy & histology/growth & development
EDAT- 1990/02/22 00:00
MHDA- 1990/02/22 00:01
CRDT- 1990/02/22 00:00
PHST- 1990/02/22 00:00 [pubmed]
PHST- 1990/02/22 00:01 [medline]
PHST- 1990/02/22 00:00 [entrez]
AID - 10.1002/cne.902920410 [doi]
PST - ppublish
SO  - J Comp Neurol. 1990 Feb 22;292(4):614-23. doi: 10.1002/cne.902920410.