Class Quiz Questions Ch. 24 and 25

Question 1

Which of the following is an accessory organ of the digestive tract?

• Pharynx
• Stomach
• Liver
• Large Intestine

Answer 1

Liver

Question 2

Which of the following is NOT an accessory organ of the digestive tract?

• Esophagus
• Salivary Glands
• Pancreas
• Gallbladder

Answer 2

Esophagus

Question 3

What is the function of the gallbladder?

Answer 3

Store and concentrate bile

Question 4

What connects the gallbladder to the common bile duct?

Answer 4

Cystic duct

Question 5

Bile…

Answer 5

Emulsifies fats in the small intestine

Question 6

Damage to the liver would hamper digestion of…

Answer 6

Lipids

Question 7

What is the purpose of segmental contractions of the small intestines?

Answer 7

Mixing of intestinal contents

Question 8

Where does the majority of nutrient absorption occur?

Answer 8

The jejunum and duodenum

Question 9

What portion of the small intestine is most distal from the pylorus of the stomach?

Answer 9

Ileum

Question 10

Which layer of the small intestine wall contains cells with microvilli?

Answer 10

Mucosa

Question 11

Which of the following would stimulate gastric secretions?

• Acidic Chyme
• Secretin
• Gastrin
• Pepsin

Answer 11

Gastrin

Question 12

The distention of the stomach by food is the primary stimulus to begin the…

Answer 12

Gastric phase of gastric secretion

Question 13

Which of the following events occurs because of the low pH of the stomach?

Answer 13

proper environment for functioning of pepsin

Question 14

Intrinsic factor…

Answer 14

facilitates the absorption of vitamin b12

Question 15

Which layer of the digestive tract is in direct contact with the food that is consumed?

Answer 15

mucosa

Question 16

What is NOT a function of the large intestine?

Answer 16

Absorption of glucose

Question 17

Which cells in the small intestine have digestive enzymes attached or their surfaces?

Answer 17

absorptive cells

Question 18

What hormone stimulates stomach secretions?

Answer 18

gastrin

Question 19

The mitochondrion is the site of…

Answer 19

citric acid cycle and electron transport chain

Question 20

Where does glycolysis take place?

Answer 20

in the cytoplasm of the cell

Question 21

A series of metabolic reactions in the liver that converts lactic acid into glucose is called…

Answer 21

the Cori cycle

Question 22

When glucose is metabolized in the absence of oxygen, one of the end products is…

Answer 22

Lactic acid

Question 23

Glycolysis is best defined as the breakdown of…

Answer 23

Glucose to two molecules of pyruvic acid

Question 24

What type of reactions are involved in ATP production?

Answer 24

Oxidation-reduction reactions

Question 25

High ATP concentrations would be found in...

Answer 25

Resting cells

Question 26

The energy currency of the cell is a molecule called...

Answer 26

ATP

Question 27

The production of protein by cells is an example of...

Answer 27

anabolism

Question 28

A source of monosaturated fat is...

Answer 28

olive oil

Question 29

Minerals..

Answer 29

- are inorganic nutrients - compose about 4-5% body weight - are components of enzymes

Question 30

The molecule that moves electrons from the citric acid cycle to the electron-transport chain is...

Answer 30

NADH

Question 31

The CO2 that you breathe out comes from...

Answer 31

the food you eat

Question 32

The conversion of amino acids and glycerol into glucose is called...

Answer 32

gluconeogenesis

Question 33

A food that contains all nine essential amino acids is called a...

Answer 33

complete protein

Question 34

Parasympathetic nerves extend to the digestive tract through the _________ nerve.

Answer 34

Vagus

Question 35

Starches and sugars are examples of...

Answer 35

carbohydrates

Question 36

Anticipation of eating food causes and increase in secretion of gastric juice. This phase of gastric secretion is called the _______ phase.

Answer 36

cephalic

Question 37

Which are energy nutrients?

Answer 37

carbs, proteins, lipids

Question 38

The enteric nervous system acts independently of the CNS to control local reflexes in the digestive tract. T/F

Answer 38

TRUE!

Question 39

The lips, cheek, and tongue all aid in....

Answer 39

mastication, speech, and swallowing

Question 40

The distension of the stomach by food is the primary stimulus to begin the...

Answer 40

gastric phase of gastric secretion

Question 41

Excess triglycerides are stored in adipose tissue. Adipose tissue functions...

Answer 41

- to assist the body in temperature homeostasis - pads and protects - energy storage - insulates

Question 42

The movement of food through the digestive tract is..

Answer 42

propulsion

Question 43

What moves the bolus during the esophageal phase of deglutition?

Answer 43

peristalsis

Question 44

What is NOT a function of the small intestine?

Answer 44

mastication of food

Question 45

The movement of molecules out of the digestive tract into circulation of the lymphatic system is...

Answer 45

absorption

Question 46

An example of an incomplete protein food is...

Answer 46

leafy green veg

Question 47

The _______ helps hold a tooth in its socket.

Answer 47

periodontal ligament

Question 48

Why doesn't the stomach digest itself?

Answer 48

The stomach wall is protected by large amounts of mucus.

Question 49

Food in the stomach is squeezed and mixed with gastric juices, forming a semi liquid called...

Answer 49

chyme

Question 50

Saliva...

Answer 50

moistens food and begins starch digestion in the mouth

Question 51

The villi, microvilli and plicae circularis function to...

Answer 51

increase surface area for absorption

Question 52

What structure moves food from the pharynx to the stomach?

Answer 52

esophagus

Question 53

Secretions that are added as food moves through the GI tract assist in...

Answer 53

liquefying and digesting the food.

Question 54

What is the measurement of the energy content of food?

Answer 54

calories

Question 55

What keeps the bolus from entering the larynx during deglutition?

Answer 55

the epiglottis.