Mechanics and Types of Respiration

Internal Respiration: Gas Exchange at the Tissue Level

Internal respiration is a crucial physiological process wherein oxygen is delivered to the tissues and carbon dioxide is expelled from cellular metabolism. This exchange occurs at the capillary level and is facilitated by diffusion gradients.

Mechanism of Internal Respiration

Oxygen transport and delivery rely on hemoglobin saturation and partial pressure gradients. Oxygen diffuses into cells where it is utilized in the mitochondria to generate ATP.

Factors Influencing Internal Respiration

• Partial pressure differences
• Hemoglobin affinity
• Capillary perfusion rates
• Cellular metabolic demands