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The epiglottis is a
Flap of cartilage that flips down to cover the entry to the trachea during swallowing
During which of the following stages of food processing is undigested material removed from the digestive tract?
The digestion of carbohydrates begins in the mouth. What is the name given to the starch digesting enzyme secreted by salivary glands?
What happens to nutrient macromolecules in an animal's digestive tract?
Nutrient macromolecules are digested into monomers for absorption
Which of the following correctly lists the order of the parts of the human digestive system, from first to last contact, with food matter?
Oral cavity, pharynx, esophagus, small intestine, large intestine
Which of the following statements regarding animal digestive systems is false?
Meat is more difficult to digest than vegetable matter because of its protein content
Nutrients absorbed by the intestines move directly to the liver, which
Converts excess glucose to glycogen
The function of the pyloric sphincter is to
Periodically release chyme into the duodenum in periodic squirts
Altogether, the body secretes about 7 liters of water into the alimentary canal each day. About what percent of this water gets reabsorbed?
Which of the following mechanisms helps prevent the gastric juice from destroying the stomach lining
Generation through mitosis of new cells to replace the stomach lining
The overall process that refines the filtrate and ultimately returns water and valuable solutes to the blood is known as
Which of the following options correctly lists the structures in the kidney in order in which fluid flows through them?
Glomerulus, bowman's capsule, proximal tubule, loop of henle, distal tubule
The first step in the formation of urine is the
Formation of filtrate that accumulates in Bowman's capsule
Which of the following statements regarding the urinary system is true?
Bowman's capsule envelopes the glomerulus
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