Study Chapter Details
UP Board Class 11 Biology – Breathing and Exchange of Gases
The chapter “Breathing and Exchange of Gases” in UP Board Class 11 Biology explains the mechanism by which animals, including humans, inhale oxygen and exhale carbon dioxide to sustain life. It highlights the structure and function of the respiratory system, including the nasal cavity, trachea, bronchi, lungs, and alveoli.
Students learn about mechanics of breathing, involving inspiration and expiration, and the role of the diaphragm and intercostal muscles. The chapter also covers transport of gases in blood, including oxygen binding to hemoglobin and carbon dioxide transport as bicarbonates, and factors affecting gas exchange.
Understanding breathing and gas exchange is fundamental for studying human physiology, metabolism, and respiratory health. This chapter provides a foundation for advanced studies in biology and medicine and is essential for competitive exams like NEET and CUET.
