Exam 47: Digestive Systems and Animal Nutrition

The ____ has a digestive tract.

The ____secretes bile.

Place the layers of a mammalian gut in order, from the outermost layer to the lumen.

Which two animals are classified as suspension feeders?

Individual species do not differ in the vitamins, essential amino acids, and fatty acids they require.

A bird cracks open the seed coat with its teeth before swallowing.

The liver ____.

The appendix is a vestigial structure that extends off of the ____.

Weight loss dieting in humans has been shown to ____.

A diet that does not contain any dark green vegetables, whole grains, yeast, or legumes may result in a ____ deficiency.

Mechanical digestion in the human digestive system is best illustrated by ____.

A diet of primarily grains would likely be deficient in the____ fatty acids.

Choanocytes are found in ____ and participate in intracellular digestion.

Food is classified as chyme in the ____.

The appendix is a vestigial structure in humans.

When a ruminant "chews his cud," digested food is regurgitated from the ____, rechewed, and swallowed.

The "small" in the small intestine refers to its length .

Ruminants have ____ chamber(s) in their stomachs.

Describe the enzymatic digestion that takes place in each structure of the digestive tract.