Related Experiment Video
Updated: Aug 29, 2026

Dissection of Drosophila melanogaster Indirect Flight Muscles for Microscopy Approaches
Published on: November 7, 2025
[Morphology and functional anatomy of the growing thorax]
W J Weninger1, S Meng, S H Geyer
1Integrative Morphology Group-Institut für Anatomie, Unversität Vienna, Austria. Wolfgang.Weninger@univie.ac.at
Insights
Thoracic organ development continues after birth, involving significant structural and functional changes throughout childhood and adolescence. This study details these postnatal growth transformations in key chest structures.
Area of Science:
- Anatomy
- Developmental Biology
- Pediatrics
Context:
- Postnatal development of thoracic organs extends beyond birth.
- Significant structural, morphological, and functional changes occur during infancy, childhood, and adolescence.
- Understanding these changes is crucial for pediatric medicine and anatomical studies.
Purpose:
- To provide an overview of the morphological, topological, and functional characteristics of thoracic anatomy during postnatal development.
- To highlight the developmental trajectories of the mammary gland, chest wall osseous structures, thymus, heart, and lungs.
- To illustrate growth-associated changes using measurements and numerical data.
Summary:
- This study examines the ongoing morphogenesis of thoracic organs and structures after birth.
- It details the anatomical, topological, and functional development of the mammary gland, chest wall, thymus, heart, and lungs through infancy, childhood, and adolescence.
- Data primarily derives from post-mortem studies, with measurements illustrating growth patterns.
Impact:
- Provides a comprehensive reference for the postnatal development of thoracic anatomy.
- Informs clinical understanding and diagnosis of pediatric thoracic conditions.
- Contributes to foundational knowledge in developmental anatomy and morphology.
Abstract:
Morphogenesis of most thoracic organs and structures is not finished with birth but perpetuates in postnatal life. The postnatal growth is partly associated with enormous changes in structure, morphology, and function. Our study presents an overview of morphological, topological and functional peculiarities of thoracic anatomy during infancy, childhood and adolescence. It focuses on the development of the mammary gland, osseous structures of the chest wall, thymus, heart, and lungs. Most of the presented data are based on post-mortem studies. Measurements and numerical data are mainly included for illustration of growth-associated changes.
Related Concept Videos
Muscles of the Thorax
The diaphragm is at the core of thoracic musculature, the primary muscle involved in breathing. This expansive, dome-shaped muscle marks the division between the thoracic and abdominal cavities. It originates...
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
The Thoracic Cage: Sternum
The sternum is the elongated bony structure on the anterior side of the thoracic cage. It consists of three parts: the manubrium, the body, and the xiphoid process.
Gross Anatomy of the Lungs
Introduction to the Skeletal System
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
Overview of the Axial Skeleton
The axial skeleton of the adult...

