03_Bowen

Comparative Anatomy and Physiology of Digestion in Vertebrates**
 * Patterns in nature-Bowen

teeth is used to break down the food into small pieces making it easier for the rest of the body to digest the food
 * 1.** **//describe//** **the role of teeth in increasing the surface area of complex foods for exposure to digestive chemicals**

2.**i//dentify// data sources, gather, process, analyse and present information from secondary sources and use available evidence to compare the digestive systems of mammals, including a grazing herbivore, carnivore and a predominantly nectar feeding animal** pollinators. || jaw) is reduced to a thin flexible rod and is not suitable for the insertion of strong musculature or deeprooted teeth. The incisors and canines are pointed but the cheek teeth are flattened pegs with rounded tips and do not resemble the normal structure of mammalian teeth. || the intestines (remember it is hard to tell the small from the large) indicate that pollen is digested by the time it reaches the rectum. In the experiments, in the first quarter of the intestines most of the pollen grains had content in them; in the second quarter of the intestines between 1-50% of the grains had lost their content; in the third quarter 60-95% were empty and in the last quarter 50-100% were empty. ||
 * || Mammalian Carnivore || Mammalian Grazing Herbivore || Mammalian Nectar Feeder ||
 * Examples of animals in this group || Lion, tiger, wolf, leopard || cow, rabbit, horse || Honey possum ||
 * Chemicals common in foods ingested by animal ||  ||   || Nectar is essentially a sugary solution containing sucrose, glucose, fructose, produced by plants to reward
 * Diagram of digestive system (cut & paste from internet) ||  ||   ||< [[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot.png]][[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot-1.png]][[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot-2.png]][[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot-3.png]][[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot-4.png]] ||
 * Comparison of system parts – teeth || Has larger canines to tear and rip meat carcasses || have no canines but have large double flat teeth the grind plant food || The head is sharply tapered, delicately constructed and has only a few, minute teeth. The mandible (lower
 * Comparison of system parts – stomach(s) ||  ||   ||   ||
 * Comparison of system parts – small intestine || [[image:file:///C:/DOCUME%7E1/ADMINI%7E1/LOCALS%7E1/Temp/moz-screenshot-5.png]] ||  || Pollen is digested progressively in the small intestine. Experiments to show the passage of pollen through
 * Comparison of system parts – Caecum ||  ||   ||   ||
 * Comparison of system parts – Large Intestine ||  ||   ||   ||