What is the main respiratory role of the air sacs in birds?
Correct answer: A. They act as bellows for airflow
- A. They act as bellows for airflow
- B. They perform most oxygen diffusion
- C. They filter nitrogen from air
- D. They secrete pulmonary surfactant
Explanation
Avian air sacs function mainly as bellows that move air through the rigid lungs and help ventilate them. Gas exchange occurs primarily in the parabronchi and associated air capillaries, not in the air sacs.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Veterinary Anatomy and Physiology
Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
Practise Veterinary Anatomy and Physiology
59 free Veterinary Anatomy and Physiology MCQs from Veterinary Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Veterinary Science questions like this
Veterinary Science is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Veterinary Anatomy and Physiology questions
In domestic mammals, which structure produces most of the cerebrospinal fluid?
Which structural feature is characteristic of a synovial joint in domestic mammals?
Which hormone is primarily secreted by the thyroid follicular cells of domestic mammals?
Which part of the small intestine is the principal site of nutrient absorption in domestic mammals?
What does the P wave of a normal mammalian electrocardiogram represent?
What is the primary function of the atrioventricular node in the mammalian heart?