Chapter 34 Animal Nutrition and Digestive System Flashcards
What are herbivores?
animals whose primary food is plant-based
What are carnivores?
animals who eat other animals
What are omnivores?
Animals that eat both plant and animals
What is a incomplete tract?
- single opening which is a gastrovascular cavity mouth and anus is the same thing
What is a complete tract?
- two openings which is a alimentary canal
- food enters mouth and leaves through anus
What happens in monogastric digestive systems?
food passes through the digestive system, collects in the cecum and then passes as soft feces
What happens in bird digestive systems?
the food is stored in a crop and then goes through 2 stomachs
- proventriculus (enzymes)
- gizzard (grinds food)
and then opens to excrete urine and feces
What happens in ruminants digestive systems?
they have 4 stomachs:
- the rumen and the reticulum contain prokaryotes and protist to digest cellulose fiber
- the omasum removes water
- the abomasum passes the waste
Dentition
differs with mode of nutrition
Do humans have a complete digestive tract?
yes
Digestion is entirely what?
extracellular
What is the salavatory glads jobs?
- moisten the food
- lubricate the food
- digestion
- antimicrobial
What do the teeth do in digestion?
they cut the food up
what does the tongue do in digestion?
helps breakdown the food
Where does the esophagus end?
with our cardiac sphincter
What is peristalsis?
Rhythmic contractions
What does the esophagus do?
takes food to stomach by peristalsis
What does the stomach do?
- muscles squeezes
- has acid HCl
- has pepsin
What is pepsin?
a protein
What is chyme?
food mixing with gastric juices
What does the duodenum do in the small intestine?
- pancreas
- gallbladder ( bile, salts, and fats)
- liver
What does the jejunum do in the small intestine?
absorption
What does the Ileum-Ileo do in the small intestine?
cecal valve
What does the liver do?
detoxification center
