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30. Transport and Exchange 2: Digestion, Nutrition, and Elimination

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Chapter Pre-Test

Chapter Pre-Test

This activity contains 18 questions.

	The liver has all of the functions below EXCEPT ______.   producing and secreting proteases removing blood toxins breaking down ruptured blood cells producing bile

	Which process pushes food through the digestive system?   digestion skeletal muscle contractions metabolism peristalsis

	Which of the following alimentary canal structures does NOT play a role in the digestion of food material?   cecum duodenum jejunum oral cavity

	What is the significance of the direct connection between the capillaries of the small intestine and those infiltrating the liver?   Blood that lost water during digestion travels directly to the liver, where the water is replaced. The connection allows bile produced by the liver to have direct access to the digestive tract. The liver is the most important organ in the body and as such receives nutrition directly from the small intestine. This connection allows ingested toxic materials to travel directly to the liver, where they are detoxified.

	Nutrients can have any of the functions listed below EXCEPT _________.   helping to regulate the body's physical processes providing us with energy helping to keep food moving through the digestive system providing a structural building block for the body

	Where in the body is most of the calcium found?   blood bones brain muscles

	Calories are units of ________.   weight nutritional value volume energy

	What are the building blocks of a protein?   amino acids monosaccharides nucleic acids glycerol

	Table sugar, or sucrose, is an example of _______.   a disaccharide a monosaccharide a polysaccharide an amino acid

	Which organic molecule is used to make the hormones estrogen and testosterone?   nucleic acids lipids carbohydrates proteins

	Which of the following foods is an important part of a healthy diet?   potatoes plant oils red meat butter

	Apart from removing waste products from the blood, the other important function of the urinary system is _______.   regulating blood volume gas exchange regulating the concentration of hormones in the blood producing bile

	Where is urine formed?   ureters urethra kidneys bladder

	In which part of the nephron is urine made?   loop of Henle collecting ducts glomerulus proximal tubule

	Which part of the nephron initially filters the blood?   glomerulus ureters collecting ducts loop of Henle

	What is the effect of the antidiuretic hormone (ADH)?   It lowers blood volume. It stimulates the bladder to empty. It restricts the movement of water out of the collecting duct. It conserves water by returning more of it to the blood.

	Which two tubes connect the kidneys to the bladder?   urethras ureters loops of Henle collecting ducts

	Which part of the body is under voluntary control and controls urination?   smooth muscles around the bladder both internal and external sphincters internal sphincter external sphincter

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