Anatomy
What is the name of the bird’s voice box?
Syrinx
What type of airflow do birds have?
Unidirectional
Do birds have a diaphragm?
No
Name two of the nine air sacs found in poultry.
Cervical, clavicular, cranial thoracic, caudal thoracic, abdominal
During inhalation, where does the air first go?
Posterior air sacs
True or False: The lungs of birds expand and contract like mammals.
False
What rigid structure keeps the trachea open?
Cartilaginous rings
How many complete respiratory cycles does it take for a single breath to pass through a bird?
2 cycles
Name 3 functions of the respiratory system
O2/Co2 exchange, temp. regulation, vocalization, acid-base buffering
What is the primary site of gas exchange in poultry lungs?
Parabronchi
What is the main advantage of unidirectional airflow?
Continuous oxygen supply during both inhalation and exhalation
Name two things that can irritate the respiratory system.
Dust, Ammonia
What is the function of the glottis?
Stops feed from going into the respiratory tract
What helps protect the lining of the trachea?
What heat-related behavior in hens can cause eggshells to become thinner?
Panting