Podcast
Questions and Answers
What is the primary difference between the double circulation in birds and mammals compared to other vertebrates?
What is the primary difference between the double circulation in birds and mammals compared to other vertebrates?
- The heart has two atria and two completely divided ventricles (correct)
- The heart has one atrium and one ventricle
- The heart has three atria and two ventricles
- The heart has four atria and four ventricles
What is the main reason why birds and mammals need a more efficient circulatory system?
What is the main reason why birds and mammals need a more efficient circulatory system?
- They are endotherms and use more energy than ectotherms (correct)
- They need to pump more blood to their lungs
- They need to pump more oxygen-rich blood to their brains
- They need to remove more CO2 and other wastes from their tissues
What is the term for the independent evolution of similar traits in different ancestors?
What is the term for the independent evolution of similar traits in different ancestors?
- Parallel evolution
- Co-evolution
- Divergent evolution
- Convergent evolution (correct)
How much more energy do birds and mammals use compared to equal-sized ectotherms?
How much more energy do birds and mammals use compared to equal-sized ectotherms?
What is the advantage of having separate and independently powered systemic and pulmonary circuits?
What is the advantage of having separate and independently powered systemic and pulmonary circuits?
Why can't birds and mammals vary blood flow to the lungs without varying blood flow throughout the body?
Why can't birds and mammals vary blood flow to the lungs without varying blood flow throughout the body?
What is the function of the left side of the heart in birds and mammals?
What is the function of the left side of the heart in birds and mammals?
How do the circulatory systems of birds and mammals adapt to their high energy needs?
How do the circulatory systems of birds and mammals adapt to their high energy needs?
What is a key feature of the heart in birds and mammals?
What is a key feature of the heart in birds and mammals?
Why is a powerful four-chambered heart beneficial for birds and mammals?
Why is a powerful four-chambered heart beneficial for birds and mammals?
What is similar between the circulatory systems of birds and mammals?
What is similar between the circulatory systems of birds and mammals?
What is the result of convergent evolution in birds and mammals?
What is the result of convergent evolution in birds and mammals?
