Hibernation flashcard

Front

What is hibernation?

Back

A state of inactivity and metabolic depression in endotherms, characterized by lower body temperature, slower breathing, and reduced metabolic rate.

Front

What role does adenosine play in hibernation?

Back

Adenosine is a nucleoside that promotes sleep and can influence the entry and exit from torpor in hibernating animals.

Front

What is torpor?

Back

A short-term state of decreased physiological activity in an animal, usually characterized by a reduced metabolic rate and lowered body temperature.

Front

How does hibernation benefit mammals?

Back

Hibernation allows mammals to conserve energy during periods of food scarcity and extreme environmental conditions.

Front

What physiological changes occur during hibernation?

Back

Decreased metabolic rate, lowered heart rate, and reduced body temperature.

Front

What is the significance of urea recycling in hibernating animals?

Back

Recycling urea helps preserve nitrogen and nutrients during periods of low food intake.

Front

What environmental conditions can trigger hibernation?

Back

Cold temperatures and food scarcity are primary triggers for hibernation.

Front

How does hibernation differ from sleep?

Back

Hibernation is a prolonged state of dormancy with significant metabolic changes, while sleep is a temporary state of rest with less drastic physiological changes.

Front

What adaptations do hibernating animals have for energy conservation?

Back

Adaptations include a decreased metabolic rate, fat storage, and physiological changes that allow for lower body temperatures.

Front

What is the relationship between body temperature and metabolic rate during hibernation?

Back

As body temperature decreases, metabolic rate also decreases, allowing for energy conservation.