Avian Digestive System Hypothesize Why are tukeys found

Avian Digestive System

Hypothesize: Why are tukeys found so commonly on the side of the road?

The avian digestive system is the type found in poultry. This system differs greatly! n Since a bird has no teeth, no chewing n The esophagus empties directly into the crop. n Crop = where the food is stored and soaked. n Proventriculus = glandular stomach (HCI and gastric juices); enzymatic (like a human stomach) n Gizzard = very muscular organ, which normally contains stones or grit that grinds the food. n Cloaca = posterior opening (similar to anus) – one opening for urinary, intestinal and reproductive tract

Hypothesize: Will digestion be fastest in a monogastric, polygastric or avian GI? Why?

Questions?

Just for Fun… Which mammal has the longest digestive system? Guesses? ? ?

Koala Largest Herbivore

Just for Fun… How long does digestion take… Guesses? ? ?

IT DEPENDS… • What was eating • What animal is digesting • If digestive tract/bacteria are working correctly (Average 3 -6 hours) Ferrets = FASTEST (30 min)

Sloths Everything about a sloth is slowmoving, including his digestive system. It can take up to a month

Just for Fun… How many stomachs does a whale have? Guesses? ? ?

Whales have a threesectioned stomach. The first section of a whale's stomach breaks down its food by crushing. The second section mixes the food with digestive juices and the third further mixes the food and digestive juices.

Rate your knowledge … Digestive Expert – Green Digestive Novice – Yellow I’ve Digested Something Before - Red

Additional Resources Video Link to Fistula Cow Video Link to 3 D Horse Digestion Guide Crash. Course Video – Digestion Cat Dissection Video – Digestive Tract

Questions?