In humans, fats are absorbed

Question 1In humans, fats are absorbed

 

by the liver.

 

in the large intestine.

 

in the rugae of the stomach.

 

primarily into the blood capillaries.

 

primarily into the ducts of the lacteal of the small intestine.

 

Question 2Muscles that encircle tubes and act as valves are called

 

dilators.

 

constrictors.

 

mucosa.

 

lacteals.

 

sphincters.

 

Question 3Secretin, gastrin, and CCK in humans are

 

all hormones that control digestive secretions.

 

all breakdown products of digestion.

 

all enzymes used to digest food.

 

proteins found in the intestinal submucosa.

 

produced in the gut by an acid pH.

 

Question 4Starting from the inside of the esophagus and going to the outside, the layers of the digestive tract in sequence are

 

mucosa → smooth muscle → submucosa → serosa.

 

mucosa → submucosa → smooth muscle → serosa.

 

mucosa → submucosa → serosa → smooth muscle.

 

serosa → submucosa → smooth muscle → mucosa.

 

serosa → smooth muscle → submucosa → mucosa.

 

Question 5The digestive system does NOT function in the

 

chemical breakdown of food.

 

elimination of waste products.

 

absorption of food molecules.

 

manufacture of food molecules.

 

mechanical breakdown of food.

 

Question 6The release of secretin is stimulated by the action of

 

acid in the chyme within the duodenum.

 

the alkaline material in the duodenum.

 

bile.

 

nerves to the duodenum.

 

muscular contractions in the stomach.

 

Question 7Which of the following features is associated with pica?

 

person has an irrational fear of getting fat

 

person conducts self-induced vomiting and laxative abuse

 

person is a greater risk for various poisoning

 

individual frequently eats large amount of foods while feeling a loss of control

 

individual engages in extreme physical activity to avoid weight gain

 

Question 8Which of the following is not a major class of nutrients required by the human body?

 

proteins

 

fiber

 

lipids

 

vitamins

 

carbohydrates

 

Question 9Which of the following is not true of the tongue?

 

A person’s tongue is moved by external muscles.

 

The tongue consists of skeletal muscle under voluntary control.

 

The tongue is attached to the floor of the mouth.

 

The tongue secretes salivary amylase.

 

The tongue functions to mix food with saliva and assist in swallowing.

 

Question 10Which of the following statements about proteins in the diet is not true?

 

Complete protein sources include meat, milk, and eggs.

 

Two servings of meat a day, each approximately the size of a deck of cards, is considered enough protein.

 

Legumes, seeds, nuts, and grains can be good protein sources, but contain insufficient amounts of at least one essential amino acid.

 

Amino acids are stored in the body, so we do not need a regular supply of protein in the diet.

 

The body is harmed if an excess of protein is consumed.