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The sodium-potassium pump maintains the resting membrane potential by actively transporting Na⁺ out and K⁺ into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Sensory Organs - Ear - Structure and Physiology of Hearing and Balance
High CO₂ levels stimulate the respiratory centers in the brain to regulate breathing rate.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
A decrease in temperature increases the oxygen-binding affinity of hemoglobin, promoting oxygen uptake in the lungs.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Organs and Human Respiratory System
During expiration, the diaphragm relaxes and moves upward, decreasing thoracic volume and increasing pressure.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Organs and Human Respiratory System
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