<prompt> Depth of anaesthesia by inhalation anaesthetics depends uponRespiratory minute volumeSolubility of anaesthetic agent in bloodBlood concentration of anaesthetic agentAll of the above  <response>: D All of the above Depth of anaesthesia depends on the potency of the agent MAC is an index of potency and its partial pressure PP in the brain, while induction and recovery depend on the rate of change of PP in the brain. Factors affecting PP of anaesthetic attained in brain are: PP of anaesthetic in the inspired gas Pulmonary ventilation Alveolar exchange Solubility of anaesthetic in blood Solubility of anaesthetic in tissue Cerebral blood flow 