Three-Dimensional Reconstruction of Avian Medullary Cone and Lateral Relationships of Loops of Henle

Persistent Link:
http://hdl.handle.net/10150/243881
Title:
Three-Dimensional Reconstruction of Avian Medullary Cone and Lateral Relationships of Loops of Henle
Author:
Choi, Joshua Sunchul
Issue Date:
May-2012
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Although birds and mammals are the only vertebrates that can produce urine hyperosmotic to their plasma, the organization of the renal medulla of birds considerably differs from that of mammals. In this study, a three-dimensional model was generated from one cone in the renal medulla of a desert quail (Callipepla gambelii), and the spatial relationships between its limbs of loops of Henle and its collecting ducts were examined. Data on the spatial segregation of the collecting ducts and limbs of loops of Henle were collected. Collecting ducts formed a ring in the center, loops of Henle reaching deep into the medulla clustered within the ring, and loops ending superficially ended outside the ring. It was found that limbs of the same type did not cluster and that each loop’s pair of limbs remained near each other throughout the medullary cone. However, loops of Henle near the center of the cone, within the cluster of collecting ducts, tended to be longer than those outside. It is thought that this may have ramifications on the ability of the desert quail to concentrate its urine.
Type:
text; Electronic Thesis
Degree Name:
B.S.H.S.
Degree Level:
bachelors
Degree Program:
Honors College; Physiology
Degree Grantor:
University of Arizona

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThree-Dimensional Reconstruction of Avian Medullary Cone and Lateral Relationships of Loops of Henleen_US
dc.creatorChoi, Joshua Sunchulen_US
dc.contributor.authorChoi, Joshua Sunchulen_US
dc.date.issued2012-05-
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractAlthough birds and mammals are the only vertebrates that can produce urine hyperosmotic to their plasma, the organization of the renal medulla of birds considerably differs from that of mammals. In this study, a three-dimensional model was generated from one cone in the renal medulla of a desert quail (Callipepla gambelii), and the spatial relationships between its limbs of loops of Henle and its collecting ducts were examined. Data on the spatial segregation of the collecting ducts and limbs of loops of Henle were collected. Collecting ducts formed a ring in the center, loops of Henle reaching deep into the medulla clustered within the ring, and loops ending superficially ended outside the ring. It was found that limbs of the same type did not cluster and that each loop’s pair of limbs remained near each other throughout the medullary cone. However, loops of Henle near the center of the cone, within the cluster of collecting ducts, tended to be longer than those outside. It is thought that this may have ramifications on the ability of the desert quail to concentrate its urine.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
thesis.degree.nameB.S.H.S.en_US
thesis.degree.levelbachelorsen_US
thesis.degree.disciplineHonors Collegeen_US
thesis.degree.disciplinePhysiologyen_US
thesis.degree.grantorUniversity of Arizonaen_US
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