GI Organs
This organ is responsible for the digestion of food that then passes into the gizzard
Proventriculus
thin walled, lightly vascularized membrane. reservoirs for air
air sacs
what three things is the cloaca responsible for?
function of the syrinx
vocalizations
the main function for Air Sacs
reservoirs for air
This flexible pouch is only found in birds and is a storehouse for food
Crop
only unpaired air sac
interclavicular air sac
in some species of birds, the crop does this extra job
produces crop milk to feed young
the main job of the trachea
where the air passes through when a bird inhales
true or false- the lungs of birds do not inflate or deflate, but rather retain a constant volume
true
you can often find small pebbles and rocks in this organ responsible for the mechanical breakdown of food
gizzard
sight of gas exchange in avians
parabronchi
the cecum in birds is responsible for what?
absorption of water and proteins
turbinates are complex structures located in the nasal cavity that do this
warm and humidify inhaled air
the cycle of the avian respiratory system
two breathing cycle
Smaller than in mammals, this organ still have three sections
Small Intestines
opening on trachea at back of tongue
glottis
what is the beak responsible for?
prehension, tearing, and crushing of food
the Choanae allows for what
breathe air through the nares
true or false- the air that comes through the windpipe causes a thin membrane to vibrate to produce sound in the larynx
false- sound is produced in the syrinx in avians
this is larger to accommodate unchewed food
Esophagus
function of producing sound in mammals but not avians
larynx
the liver works as both a ______ and a _____ gland.
endocrine and exocrine
what does the larynx NOT do in birds that it does in mammals
produce sounds
what is the job of the sternum and ribs in birds that is usually done by the diaphragm
move to allow for the bird to breathe