16 Questions
What is the primary function of the swim bladder in most bony fishes?
Buoyancy
Which type of swim bladder is found in freshwater fishes and functions as a primitive lung?
Physostomous
What is the primary evolutionary trend in the development of lungs?
Adaptation to increasing body size and metabolic rate
Which characteristic best distinguishes tetrapod lungs from fish lungs?
Connection to the gut via a trachea
Which type of fish is most dependent on atmospheric air for respiration?
Labyrinth fishes
Which group of animals relies entirely on cutaneous or gill respiration?
Urodela
What is the primary function of the buccopharyngeal space in pulse (expiration) pump ventilation?
Allowing for the storage of fresh air
In which respiratory group does inspiration occur via negative pressure?
Mammals
Which animal group has a unique respiratory morphology involved in thermoregulation?
Birds
What is the main function of the accessory air sacs in birds?
Ventilation but not gas exchange
Which of the following is NOT a modifiable vertebrate feature that affects external respiration?
Amount of oxygen respired
What is the primary function of the internal gills in aquatic respiration?
Exchange of gases
What distinguishes the respiratory system of Agnathans from that of Cartilaginous Fishes?
Number of gill chambers
Which feature is unique to the gills of Cartilaginous Fishes?
Gill rakers to protect demibranch lamellae
What is the function of the operculum in Bony Fishes?
Covering and protecting the gills
What is the purpose of the dual pump system in fish respiration?
Facilitate water flow for gas exchange
Test your knowledge on the functions and requirements of the respiratory system, including the use of oxygen, expulsion of carbon dioxide, external and internal respiration, and factors affecting the rate of diffusion. Explore concepts like Fick's Law of Diffusion in this quiz.
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