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Assessment of Students’ Knowledge of Anatomical Structures Involved in Breathing Mechanics

Abstract

The study assesses students’ knowledge of the anatomical structures involved in breathing mechanics, with emphasis on the structures responsible for the movement of air into and out of the respiratory system. Breathing mechanics depend on the coordinated actions of the thoracic cage, diaphragm, intercostal muscles, accessory respiratory muscles, lungs, pleura, and associated airways. Knowledge of these structures is important for understanding the anatomical basis of inspiration and expiration and the relationship between respiratory structures and normal ventilation. The study will assess students’ knowledge of the location, structure, and functions of the major anatomical components involved in breathing mechanics. Specific objectives will include identifying the diaphragm and intercostal muscles, assessing knowledge of the thoracic cage and its role in respiratory movements, identifying accessory muscles involved in breathing, and determining students’ understanding of the anatomical changes that occur during inspiration and expiration. The study will also assess students’ ability to relate the structural arrangement of the respiratory system to its mechanical function. A cross-sectional descriptive research design will be adopted for the study. Undergraduate students will be selected using an appropriate sampling technique, and data will be collected through a structured questionnaire and, where applicable, image-based or practical identification of relevant anatomical structures. The assessment will cover the respiratory muscles, thoracic structures, pleura, lungs, and associated anatomical relationships involved in breathing movements. Data obtained will be analyzed using descriptive statistics such as frequency, percentage, mean, and standard deviation, with appropriate inferential tests applied where necessary. The study is expected to reveal varying levels of knowledge among the students regarding the anatomical structures involved in breathing mechanics. Students may demonstrate better knowledge of major structures such as the diaphragm, ribs, lungs, and intercostal muscles, while detailed knowledge of accessory respiratory muscles, pleural structures, and the coordinated anatomical changes occurring during inspiration and expiration may present greater difficulties. Differences in knowledge may also be observed according to students’ level of study and exposure to practical anatomy learning. The findings will be useful to anatomists, anatomy educators, physiotherapists, respiratory therapists, pulmonologists, physicians, and other healthcare professionals involved in the assessment and management of respiratory function. The study may identify areas of respiratory anatomy that require greater emphasis during theoretical and practical teaching and may support the use of anatomical models, diagrams, demonstrations, and functional learning activities to improve students’ understanding of breathing mechanics. The study will conclude by documenting students’ knowledge of the anatomical structures involved in breathing mechanics and identifying areas of strength and difficulty in their understanding of respiratory anatomy. It is recommended that practical demonstrations, anatomical models, labelled illustrations, and functional anatomy activities be incorporated into anatomy teaching to strengthen students’ identification and understanding of the structures responsible for respiratory movements. Further studies involving larger and more diverse student populations should also be conducted to provide broader information on knowledge of the anatomical basis of breathing mechanics.

Keywords: Breathing mechanics, respiratory anatomy, anatomical structures, anatomical knowledge, undergraduate students, diaphragm, intercostal muscles, thoracic cage, accessory respiratory muscles, lungs, pleura, inspiration, expiration, anatomy education, functional anatomy.