The cardiovascular system of humans vs birds. please give me 6 differences and 3 alikes
Differences:
1. Birds have a four-chambered heart, while humans have a three-chambered heart.
2. Birds have a higher heart rate than humans, usually between 400-1000 beats per minute.
3. Birds have a higher metabolic rate than humans, which requires a more efficient cardiovascular system.
4. Birds have a respiratory system that is more closely connected to their cardiovascular system, allowing for greater oxygen uptake during flight.
5. Birds have a smaller ratio of heart size to body size compared to humans.
6. Birds have specialized adaptations in their cardiovascular system to handle the increased physical demands of flight.
Similarities:
1. Both birds and humans have a closed circulatory system.
2. Both birds and humans have blood vessels that carry oxygenated and deoxygenated blood throughout the body.
3. Both birds and humans have a network of veins and arteries that help regulate blood flow and maintain proper circulation.