Flashcards in Digestive Systems (8.12) Deck (33):
It is the source of chemical energy used to create ATP (molecule of cellular work) in the process of cellular respiration.It can also serve as the raw building materials for “making” the organism.
This condition is caused by a lack of food.
This condition is caused by too much food in the diet. Condition can cause Obesity and heart problems.
This condition is caused by eating poor quality food.
These are plant eaters.
These are meat eaters.
These are plant and meat eaters. (“omni” means “all”)
whales, sponges, bivalves
maggots (Substrate refers to “surfaces”. They live in or on their food source.)
(earthworms) (They eat substances deposited in the soil.)
(mosquitoes, hummingbirds) (Feed on fluids such as blood or plant nectar.)
(Humans and most other animals) (Bulk refers to “large quantities at one time”.)
This is the putting of food in the mouth.
This is the breakdown of food.;
This refers to trouble breaking down food.
Accomplished through enzymatic hydrolysis primarily.
Aided by mechanical (grinding/chewing) digestion as well.
Food molecules then undergo __________ into the circulatory system or diffusion into the surrounding tissues.
Elimination of waste (about ___% of what is eaten) occurs at the end of the tract (anus) or out the mouth/anus for primitive animals.
Where Digestion occurs: It starts as a single opening _______ (sponges) evolves over time into a single opening mouth/anus of a ________ cavity (Cnidarians and Platyhelminthes)
Gastrovascular cavities evolved into a two opening digestive tracts (A.K.A. ________ Canal) over millions of years.
Starts digestion by breaking food up into smaller pieces.
This muscular tube sucks food up into the tract.
This structure lubricates food for passage through the tract.
the crop and gizzard combined to form the _____
This organ finishes food breakdown and also food absorption.
This organ is for waste collection and water reabsorption.
Where waste material exits the body.
related to diets (Just like beaks for birds.)
Increased _______ size for carnivores.
Carnivores have short digestive tracts; herbivores have long digestive tracts.
length of digestive tract