Procedures

YELLOW words are vocabulary terms and should be recorded

STOP signs photos mean there is some type of activity or review

GREEN items are review

or additional activities we will do

Suck on (do not chew) a saltine

Note what is changing and hypothesize why…..

WRITE OUT what just occurred/will occur to DIGEST the cracker..

(on scrap paper) - we will do this again in your final project.

Digestive Systems Functions of the digestive system include:

eating (ingestion) chewing (mastication) swallowing (deglutition) absorption of nutrients elimination of solid wastes (defecation)

Revise your description using these terms

Digestive System

FUNCTION (simplified) Convert, use and transport nutrients

AKA GI Tract Gastrointestinal tract

Herbivores, carnivores and omnivores vary what they eat and how they digest List examples of each

What are the THREE

types of GI tracts?

1. Ruminant Digestive Systems Ruminants are those animals that contain a

multi-chambered digestive system (polygastric) that allows the animal to gain the majority of their nutritional needs from forages and other roughages. Forage refer to grasses Roughages refer to high-fiber food.

Regurgitate food and chew it – CUD No upper front teeth – dental pad

2. Monogastic Digestive Systems Simple are those animals that contain a

one-chambered digestive system (stomach) (monogastric)

3. Avian Digestive Systems Avian (birds) have a modified simple

digestive system

(we will discuss more later)

List example species of each

What was different about the digestive

system of the horse?

The horse and rabbit have an enlargement know as a cecum that enables the animal to utilize high fiber feeds by means of microbial fermentation.

Called Pseduo-ruminents