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Chapter 33

Across
The rhythmic contractions of muscles in the wall of the canal.
The major organ of chemical digestion and absorption. (it's long)
The mixture of food and digestive juices
These are required by cells and must be obtained from dietary sources
This helps by protecting the lining of the stomach from gastric juices
This results from the long-term absence from the diet of one or more essential nutrients
This covers your vocal cords and the opening between them (prevents choking)
This serves as a reservoir for symbiotic microorganisms and aids in the immunity
Down
This is the WASTE of the digestive system.
This carries nutrient-rich blood from the capillaries of the villi to the liver, and then to the heart.
This can be determined by monitoring an animal's rate of heat loss, the amount of O2 consumed, or the amount of CO2 produced.
A protease or protein-digesting enzyme that cleaves proteins into smaller peptides
The first stage of digestion (mechanical)
This is an animal's assortment of teeth (reflects on diet)
This is the collection of microorganisms living in and on the body, along with their genetic material