Which outcome impairs arousal from torpor despite sufficient hypothalamic triggers?

💡 Explanation

When temperatures reach minimum during hibernation, cardiac calcium ion mobilization declines due to prolonged metabolic slow-down. Therefore calcium channel dysfunction impairs efficient heart reactivation, rather than uncoupling, vasodilation or cortisol influence which are more relevant to gradual rewarming during euthermia.

• Which risk increases during avian flight when contaminated vane feathers disrupt laminar airflow?
• Which reduction affects a bird’s flight when feather barbules unlock?
• Which result during prolonged elevated ambient heat when carotid rete experiences failure?
• Which outcome results when overexertion raises a seal's core temperature?
• Which risk increases when a honeybee lacks appropriate leg proprioceptors affecting its dance?
• Which mechanism causes reduced nutrient uptake in waterlogged eucalyptus trees?