Module 8: Comparative Anatomy Of The Digestive System

Question 1

The digestive system

Answer 1

Includes structures responsible for swallowing food, chewing, digestion, absorption and expelling waste
Via the alimentary canal aka the digestive tract

Question 2

Alimentary canal aka the digestive tract

Answer 2

Includes the: mouth (tongue, teeth, and salivary glands), pharynx, esophagus, stomach, small intestine, large intestine, and anus

Question 3

Mouth

Answer 3

The organ(s) of pretension → used for taking in food ?
cattle → use their tongue
horses → use their lips
Once in the mouth → the teeth (in the mandibles and the maxilla) grind it into finer particles

Question 4

Teeth

Answer 4

Located in the mandibles and maxilla
Have 2 distinct parts (generally) = the crown and the root
Some have a “neck” at the gum line
Tooth = has several layers = enamel, dentin, and the pulp (pulp cavity)

Question 5

Crown of the tooth

Answer 5

The part above the gum line

Question 6

Root of the tooth

Answer 6

The part below the gum line

Question 7

Enamel

Answer 7

Outermost layer of the tooth → covers the crown
Protects the tooth from damage by whatever the animal ‘ ingests, includingacidsproduced in the mouth