3D analysis of sexual dimorphism in size, shape and breathing kinematics of human lungs

Sexual dimorphism in the human respiratory system has been previously reported at the skeletal (cranial and thoracic) level, but also at the pulmonary level. Regarding lungs, foregoing studies have yielded sex‐related differences in pulmonary size as well as lung shape details, but different methodo...

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Bibliographic Details
Published in:Journal of anatomy 2018-02, Vol.232 (2), p.227-237
Main Authors: Torres‐Tamayo, Nicole, García‐Martínez, Daniel, Lois Zlolniski, Stephanie, Torres‐Sánchez, Isabel, García‐Río, Francisco, Bastir, Markus
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
Breathing
Computed tomography
Dimorphism
expiration
Female
Females
Humans
Imaging, Three-Dimensional
inspiration
Kinematics
landmark
Lung - anatomy & histology
Lung - physiology
Lungs
Male
Males
Middle Aged
Morphometry
Muscles
Original
Respiration
Respiratory system
semilandmark
Sex
Sex Characteristics
Sex differences
Sexual dimorphism
shape
size
Statistical analysis
Thorax
Tomography, X-Ray Computed
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Summary:Sexual dimorphism in the human respiratory system has been previously reported at the skeletal (cranial and thoracic) level, but also at the pulmonary level. Regarding lungs, foregoing studies have yielded sex‐related differences in pulmonary size as well as lung shape details, but different methodological approaches have led to discrepant results on differences in respiratory patterns between males and females. The purpose of this study is to analyse sexual dimorphism in human lungs during forced respiration using 3D geometric morphometrics. Eighty computed tomographies (19 males and 21 females) were taken in maximal forced inspiration (FI) and expiration (FE), and 415 (semi)landmarks were digitized on 80 virtual lung models for the 3D quantification of pulmonary size, shape and kinematic differences. We found that males showed larger lungs than females (P 
ISSN:0021-8782
1469-7580
DOI:10.1111/joa.12743