U2 KA3 Metabolic Rate Flashcards
What is measured to compare metabolic rates in organisms?
Oxygen consumption, carbon dioxide production, and heat production.
Why do organisms with high metabolic rates require more efficient delivery of oxygen?
To meet the higher energy demands of cells and maintain proper physiological function.
Which animals have a heart and circulatory system that are adapted for efficient oxygen delivery?
Amphibians, reptiles, mammals, birds, and fish.
What types of animals have the most efficient circulatory system?
Birds and mammals. As they have a complete double circulatory system which has high blood pressure and no mixing of deoxygenated and oxygenated blood.
What types of animals have a circulatory system that precedes the efficiency of birds and mammals and why.
Reptiles and amphibians. As they have a incomplete double circulatory system which has high blood pressure but some mixing of deoxygenated blood.
How many heart chambers to Birds and mammals have?
2 Atria 2 Ventricles (4)
How many heart chambers to Reptiles and amphibians have?
2 Atria 1 Ventricle (3)
How many heart chambers do fish have?
1 Atria 1 Ventricle (2)
Why do Different sized animals have different circulatory chambers?
The varying of efficiency across different circulatory systems is important to the creature metabolic rate. The larger the creature the higher the metabolic rate.
