Question 1

Which of the following statements is true?

Accepted Answer

The answer of Which of the following statements is true?
...

Question 2

Which of the following substances is secreted by the human stomach?

Accepted Answer

Hydrochloric acid is secreted by the human stomach to aid in the digestion of food. Bile is produced by the liver and stored in the gallbladder, chyme is a mixture of partially digested food and stomach secretions that leaves the stomach, and lymphatic fluid is produced by the lymphatic system, not the stomach.

Question 3

After being absorbed,most lipids become incorporated into chylomicrons and enter

Accepted Answer

Lipids are absorbed into the lacteals within the villi of the small intestine and are transported as chylomicrons through the lymphatic system before entering the bloodstream. Option A is incorrect because special cells lining the hepatic portal vein are responsible for processing nutrients absorbed in the digestive tract and delivering them to the liver. Options C and D are not related to the absorption and transport of lipids.

Question 4

Which of the following statements is true?

Accepted Answer

The pyloric sphincter is located at the bottom of the stomach and controls the rate at which chyme (partially digested food) enters the small intestine. B is incorrect because the esophagus connects the mouth to the stomach, not the small intestine. C is incorrect because while the colon does absorb some nutrients, the majority of nutrient absorption occurs in the small intestine. D is incorrect because obesity is actually a risk factor for gallstones, not leanness.

Question 5

Which of the following organs produces and secretes enzymes that are essential for proper digestion?

Accepted Answer

The pancreas produces and secretes digestive enzymes such as amylase, lipase, and proteases that are essential for the proper digestion and absorption of nutrients in the small intestine. The liver produces bile, which is stored in the gallbladder and released into the small intestine to aid in the digestion of fats. The colon is mainly responsible for the absorption of water and electrolytes from undigested food.

Question 6

Leonard has a disease that causes his lacteals to become blocked.Based on this information,his

Accepted Answer

Lacteals are part of the lymphatic system and are responsible for absorbing fats and fat-soluble vitamins from the small intestine. If they become blocked, the intestinal tract would not be able to absorb much fat, leading to malabsorption of nutrients such as vitamin A, D, E, and K.

Question 7

After being absorbed,most lipids become incorporated into

Accepted Answer

Lipids are absorbed into the intestinal cells and then combine with proteins to form chylomicrons. Chylomicrons then enter the lymphatic system via lacteals, which eventually drain into the bloodstream. Therefore, choice C (chylomicrons) is the best answer.

Question 8

Salivary glands secrete an enzyme that enables a minor amount of _____ to be digested in the mouth.

Accepted Answer

Salivary glands secrete an enzyme called amylase, which breaks down starch into simpler sugars like glucose and maltose.

Question 9

Which of the following structures normally prevents swallowed food from entering the larynx and trachea?

Accepted Answer

The epiglottis is a flap of cartilage located at the base of the tongue that normally covers the opening of the larynx during swallowing, preventing food and liquid from entering the trachea and lungs. The tongue, teeth, and lower gastroesophageal sphincter are not directly involved in this function.

Question 10

The lining of the small intestine is covered with _____,tiny,finger-like structures that absorb nutrients from food.

Accepted Answer

Villi are the tiny, finger-like structures that increase the surface area of the small intestine, allowing for efficient absorption of nutrients from food. Arteries are blood vessels that transport oxygenated blood away from the heart, neurons are cells that transmit electrical signals in the nervous system, and lacteals are lymphatic vessels in the small intestine that absorb fatty acids and glycerol.

Question 11

Marcus has an infection that causes a temporary loss of villi.Based on this information,you would expect Marcus to _____ while he has this illness.

Accepted Answer

Villi are finger-like projections in the small intestine that increase the surface area available for nutrient absorption. A loss of villi would result in decreased nutrient absorption and may lead to weight loss as a result. Therefore, C is the best choice. Option A (absorbing vitamins more rapidly) is incorrect since losing the villi would hinder absorption not accelerate it. Option B (digestion of proteins more efficiently) and Option D (gain body fat) do not relate to the loss of villi in the small intestine.

Question 12

Chyme moves from the stomach into the

Accepted Answer

Chyme moves from the stomach into the duodenum, the first section of the small intestine where further digestion and absorption of nutrients takes place. The ileum and jejunum are also parts of the small intestine, but chyme enters them after passing through the duodenum. The colon is part of the large intestine and is not directly connected to the stomach.

Question 13

The _____ is the second segment of the small intestine.

Accepted Answer

The jejunum is the second segment of the small intestine, following the duodenum. It is responsible for the majority of nutrient absorption in the small intestine. The ileum is the final segment of the small intestine, and the colon is part of the large intestine.

Question 14

Which of the following substances is secreted by the human stomach?

Accepted Answer

Gastric juice is a digestive fluid secreted by the mucous membrane of the stomach, containing hydrochloric acid and the enzyme pepsin, which helps in breaking down proteins. Bile is produced by the liver and stored in the gallbladder, not directly secreted by the stomach. Chyme is the partially digested mixture of food and gastric juice that leaves the stomach and enters the small intestine. Sulfuric acid is not secreted by the human stomach.

Question 15

Which of the following statements is true?

Accepted Answer

Acid reflux, also known as gastroesophageal reflux, is caused when the gastroesophageal sphincter - a valve that separates the stomach from the esophagus - does not close properly, allowing stomach acid to flow back up into the esophagus.

Question 16

Mitchell has an infection that caused his epiglottis to function improperly.Based on this information,you would expect Mitchell to _____,while he has this illness.

Accepted Answer

The epiglottis is a flap of tissue that prevents food and liquid from entering the trachea during swallowing. If it is not functioning properly, it can increase the likelihood of choking or coughing while eating or drinking. There is no indication that an infected epiglottis would affect vitamin absorption, protein digestion, or weight gain.

Question 17

Chyme is the

Accepted Answer

Chyme is the semisolid liquid formed by the partial digestion of food in the stomach. It is a mixture of partially digested food, stomach acid, and digestive enzymes.

Question 18

Last night,Sara ate French fries,fried fish,and creamy cole slaw.For dessert,she had a chocolate milk shake.About an hour after eating this food,she suddenly complained of severe abdominal pain.Based on this information,Sara probably has

Accepted Answer

Sara's symptoms may suggest gallstones, which occur when a stone blocks a bile duct, causing severe abdominal pain. The high-fat content of the food she ate may have triggered the attack. Colitis is an inflammation of the colon and would not produce such sudden pain. Aneurysms are bulges in blood vessels and would not be related to Sara's symptoms. Constipation may cause discomfort, but not the severe pain that Sara is experiencing.

Question 19

Which of the following statements is true?

Accepted Answer

Older adults generally have fewer taste buds than children due to natural aging and wear and tear on the taste buds. The number of taste buds decreases with age, reducing their sensitivity to taste. However, the remaining taste buds become better at identifying different tastes. A, C, and D are all incorrect statements. There are not seven different kinds of tastes, but five primary tastes. The tip of the tongue is more sensitive to sweet and salty tastes, while the back of the tongue is more sensitive to bitter tastes. Your sense of taste functions better when you are able to smell a food because the sense of smell complements the sense of taste.

Question 20

Small amounts of food move from the back of the mouth and through the esophagus by involuntary muscular movements called

Accepted Answer

Peristalsis is the involuntary contraction and relaxation of muscles that moves food through the digestive tract, including from the back of the mouth through the esophagus. Segmentation is a type of contraction in the small intestine that helps mix food with digestive juices, umami is a taste sensation, and reflux refers to the backward flow of stomach acid into the esophagus.

Quiz 4: How Food Becomes You

Which of the following statements is true?

Which of the following substances is secreted by the human stomach?

After being absorbed,most lipids become incorporated into chylomicrons and enter

Which of the following statements is true?

Which of the following organs produces and secretes enzymes that are essential for proper digestion?

Leonard has a disease that causes his lacteals to become blocked.Based on this information,his

After being absorbed,most lipids become incorporated into

Salivary glands secrete an enzyme that enables a minor amount of _____ to be digested in the mouth.

Which of the following structures normally prevents swallowed food from entering the larynx and trachea?

The lining of the small intestine is covered with _____,tiny,finger-like structures that absorb nutrients from food.

Marcus has an infection that causes a temporary loss of villi.Based on this information,you would expect Marcus to _____ while he has this illness.

Chyme moves from the stomach into the

The _____ is the second segment of the small intestine.

Which of the following substances is secreted by the human stomach?

Which of the following statements is true?

Mitchell has an infection that caused his epiglottis to function improperly.Based on this information,you would expect Mitchell to _____,while he has this illness.

Chyme is the

Last night,Sara ate French fries,fried fish,and creamy cole slaw.For dessert,she had a chocolate milk shake.About an hour after eating this food,she suddenly complained of severe abdominal pain.Based on this information,Sara probably has

Which of the following statements is true?

Small amounts of food move from the back of the mouth and through the esophagus by involuntary muscular movements called