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An animal with a gastrointestinal tract is the __.

• Planarian

• Hydra

• Earthworm

• Sponge

• Jellyfish

After consuming an antacid like Rolaids, __.

• HCl production would decrease

• the stomach would absorb water

• the pH of the stomach fluid would decrease

• the pH of the stomach fluid would increase

Out of the estimated total of 9 liters of material passing through the small intestine, how much of it is absorbed in the small intestine?

• About 50 mL

• About 350 mL

• About 4.5 L

• About 8.5 L

A person has his/her gall bladder removed and as a result __.

• can only eat very small meals

• can only eat small amounts of fat

• can only eat liquid meals

• will die without a gallbladder

• can now eat as much fat as desired and not absorb it

Utilizing more motor units for stronger muscle contractions is called (a)   .