Official NEET-UG 2026 unit 'Human Physiology'. Weightage shown is the NEET pattern average (90 Biology questions spread across 32 chapters), not a paper-by-paper count. 453 original practice questions with explanations in the bank.
• Breathing and Respiration: Respiratory organs in animals (recall only)
Respiratory system in humans
Mechanism of breathing and its regulation in humans-Exchange of gases, transport of gases and regulation of respiration Respiratory volumes
Disorders related to respiration-Asthma, Emphysema, Occupational respiratory disorders. • Body fluids and circulation: Composition of blood, blood groups, coagulation of blood
Composition of lymph and its function
Human circulatory system-Structure of human heart and blood vessels
Cardiac cycle, cardiac output, ECG, Double circulation
Regulation of cardiac activity
• Breathing and Respiration: Respiratory organs in animals (recall only)
10 minutes. Bloom-level questions. Know exactly where you stand.
On average about 3 questions per NEET paper come from Breathing and Exchange of Gases, out of 90 in Biology — roughly 3% of the Biology section.
Breathing and Exchange of Gases is rated Medium difficulty for NEET. Official NEET-UG 2026 unit 'Human Physiology'. Weightage shown is the NEET pattern average (90 Biology questions spread across 32 chapters), not a paper-by-paper count. 453 original practice questions with explanations in the bank.
Breathing and Exchange of Gases maps to NCERT Biology XI Ch 14 in the NCERT Biology textbook.
• Breathing and Respiration: Respiratory organs in animals (recall only)