The dog's digestive system has developed to take food in, process it, and excrete it, all in a period of about ___

Approximately how long do cows take to digest their food?

Cows have microorganisms in their guts that help break down which molecule?

What is the technical term for an animal that eats food of both plant and animal origin?

A human adult's small intestine, where most nutrient absorption happens, has an average length of about ___

The small intestine has a surface area of 250 square meters, which is about the size of ___

Bread is mostly composed of starch, which breaks down into ___

Which enzyme, secreted by glands in the mouth, is designed to break down starch into glucose?

Which muscular tube connects the throat (pharynx) with the stomach?

What is the name of the little flap of tissue that blocks the trachea when you swallow?

What is the scientific name for a ball of food and saliva that forms in the mouth during the process of chewing?

The wave-like contraction of the smooth muscles around the tube of the esophagus is called ___

The big, accordion-like folds of muscle in your stomach, which turn your food like a cement mixer, are called ___

Which acid, in your gastric juice, breaks down food and kills most of the bacteria?

The pepsin in your gastric juice starts breaking down proteins into ___

When you don't have enough mucus to protect your stomach you get ___

The liquidy slop which passes from the stomach to the small intestine is technically called ___

The circular muscles that act as valves to control the flow of materials, such as chyme, are called ___

The beginning of the small intestine, where cellular exchange of nutrients begins, is called ___

On the ridges and folds of the lining of the small intestine are little hair-like fibers of flesh called ___

Apparently, due to the tiny little microvilli, the small intestine has a texture kind of like ___

Bile helps two liquids mix, like dish detergent on a dirty frying pan; it's ___

The beginning of the large intestine, where water and bile salts are removed, is called ___

The appendix, once thought to be a worthless, vestigial structure, probably acts as a safe house for ___