Maintaining Metabolism Flashcards
What are ways of measuring metabolic rate?
O2 consumption per minute
CO2 produced per minute
Heat produced per minute
What is used to measure O2 consumption?
Respirometer
What is used to measure heat produced?
Calorimeter
Why do organisms need efficient transport systems?
To deliver large quantities of oxygen to respiring cells.
What are the different types of heart structures?
Complete
Incomplete
What is a complete system?
2 ventricles (no mixing of oxygenated and deoxygenated blood)
What is an incomplete system?
1 ventricle (mixing of oxygenated and deoxygenated blood)
What are advantages of double systems?
No mixing of oxygenated and deoxygenated blood.
Blood can be pumped out at a high pressure.
Enables more efficient oxygen delivery to cells.
More oxygen for respiration to supply increased metabolic rate.
What is the circulatory system of fish?
Single incomplete circulatory system.
Blood flows in a single circuit.
High pressure gills.
Low pressure tissues.
What is the circulatory system of amphibians and reptiles?
Double (flows through heart twice).
Incomplete (1 ventricle).
Mixing of blood = less efficient.
What is the circulatory system of humans and birds?
Double complete circulatory system.
2 atria and 2 ventricles.
No mixing of oxygenated and deoxygenated blood.
