Chapter 22 Exam 3

Question 1

The digestive sac of jellyfish has ___ opening(s)

Answer 1

1

Question 2

A tube shaped digestive compartment that has two openings and through which food moves in one direction

Answer 2

Digestive tube

Question 3

Spiders are

Answer 3

Carnivores

Question 4

Breakdown of food into smaller nutrient molecules that the body can absorb

Answer 4

Digestion

Question 5

Example of mechanical digestion

Answer 5

Chewing

Question 6

List of the organs in the alimentary canal in the correct order

Answer 6

Oral cavity

Pharynx

Esophagus

Stomach

Small intestine

Large intestine

Question 7

Muscular contraction moves food through the alimentary canal by process called

Answer 7

Peristalsis

Question 8

A food ball moves through the esophagus

Answer 8

Peristalsis

Question 9

Stomach gastric juice consist of

Answer 9

Mucus

Digestive enzymes

Hydrochloric avid

Question 10

When contacted ___ prevents movement of chyme from stomach to the small intestine

Answer 10

Sphincter

Question 11

This mechanism helps prevent gastric juices from digesting the stomach lining

Answer 11

Mucus coating the inside surface of the stomach

Question 12

When the wall of the stomach fails to protect itself from erosion by gastric juice the result is

Answer 12

A gastric ulcer

Question 13

Bile from the liver is stored in the ____ before entering the intestine

Answer 13

Gallbladder

Question 14

This nutrient begins to undergo chemical digestion in the mouth

Answer 14

Starch

Question 15

The epithelial cells lining the intestine have surface projections that are the major sites of nutrient absorption

Answer 15

Microvilli

Question 16

Together with the small intestine the ____ absorbs water

Answer 16

Colon

Question 17

Make fats more easily digested by enzymes

Answer 17

Bile

Question 18

Difficulty swallowing could mean

Answer 18

Sjogren’s Syndrome

Question 19

A protein deficiency in the blood could mean

Answer 19

Achlorhydria

Question 20

Regurgitation of food indicates

Answer 20

Megaesophagus

Question 21

The main function of salivary amylase is to

Answer 21

Break down starch

Question 22

Digestion begins at

Answer 22

Oral cavity

Question 23

Tongue does all the following EXCEPT

Shape food into a ball

Push food into the pharynx

Taste food

Secrete saliva

Answer 23

Secrets saliva

Question 24

A flap that folds down to cover the entry to the trachea during swallowing

Answer 24

Epiglottis

Question 25

Esophagus and trachea are both open to

Answer 25

Pharynx

Question 26

Backflow of chyme from the stomach into the esophagus

Answer 26

Heartburn

Question 27

The stomach mixes food with the secretions of the stomach wall to form

Answer 27

Chyme

Question 28

How does helicobacter pylori cause gastric ulcers in humans

Answer 28

Damages the stomach’s mucus coat

Question 29

Most nutrient absorption occurs in which part of the digestive system?

Answer 29

The several meters of the small intestine that come after the duodenum

Question 30

It produces digestive enzymes and neutralizes the stomach acid

Answer 30

Pancreas

Question 31

Someone with liver failure will, in particular have problems with digestion and absorption of

Answer 31

Fats

Question 32

Altogether the body secretes about 7 liters of water into the alimentary canal each day. About what percentage of this water gets reabsorbed?

Answer 32

90%

Question 33

Which structure stores feces until they can be eliminated

Answer 33

Rectum

Question 34

Most humans need about ____ kcal per day

Answer 34

1,300-1,800

Question 35

Which mineral is needed for the proper functioning of nerves, muscles, and bones?

Answer 35

Calcium

Question 36

What do vitamins biotin and vitamin k have in common?

Answer 36

They are both produced by intestinal bacteria

Question 37

The direct source of energy for cells

Answer 37

ATP

Question 38

Organic molecules that are required in the diet in very small amounts

Answer 38

Vitamins

Question 39

Certain amino acids are essential because they

Answer 39

Cannot be made by the body from other compounds

Question 40

On a global scale, the most significant type of malnutrition is

Answer 40

Protein deficiency

Question 41

Most humans posses the same craving for ___ and ____ as our ancestors despite the obesity these cravings can cause today

Answer 41

Fat ; sugar