Human Digestive System

Question 1

What is the system of the body that mechanically and chemically breaks down food?

Answer 1

Digestive System

Question 2

How many hours does it take to completely break down food?

Answer 2

12 to 24 hours

Question 3

How are the digestive organs divided?

Answer 3

gastrointestinal tract
accessory organs

Question 4

What are the other terms for Gastrointestinal tract?

Answer 4

alimentary canal
digestive tract

Question 5

What is the continuous tube running from the mouth to the anus?

Answer 5

gastrointestinal tract

Question 6

How long is the gastrointestinal tract?

Answer 6

9m (30ft) in length

Question 7

digests and absorbs food

Answer 7

Gastrointestinal tract

Question 8

What are the organs included in GI tract?

Answer 8

mouth
pharynx
esophagus
stomach
small intestine
large intestine

Question 9

What are the organs included in Accessory Digestive Organs?

Answer 9

teeth
tongue
gallbladder
salivary glands
liver
pancreas

Question 10

functions in secretion of lubricating fluid containing enzymes that break down carbohydrates

Answer 10

salivary glands

Question 11

functions in mechanical processing, moistening, mixing with salivary secretions

Answer 11

oral cavity, teeth, tongue

Question 12

the pharyngeal muscles propel materials into the esophagus

Answer 12

pharynx

Question 13

transport of materials to the stomach

Answer 13

esophagus

Question 14

secretion of bile (important for lipid digestion), storage of nutrients, and has many other vital functions

Answer 14

liver

Question 15

functions in the chemical breakdown of materials via acid and enzymes

Answer 15

stomach

Question 16

It has mechanical processing through muscular contractions

Answer 16

stomach

Question 17

storage and concentration of bile

Answer 17

gallbladder

Question 18

It functions when exocrine cells secrete buffers and digestive enzymes and endocrine cells secrete hormones

Answer 18

pancreas

Question 19

responsible for enzymatic digestion and absorption of water, organic substrates, vitamins, and ions

Answer 19

small intestine

Question 20

responsible for dehydration and compaction of indigestible materials in preparation for elimination

Answer 20

large intestine

Question 21

What are the organs in the digestive tract that are made up of the same 4 basic tissue layers?

Answer 21

esophagus to large intestine

Question 22

What are the 4 basic tissue layers in esophagus to large intestine?

Answer 22

Mucosa (mucous membrane)
submucosa
muscularis externa
adventitia or serosa

Question 23

it is the innermost layer of the 4 basic tissue layers

Answer 23

mucosa

Question 24

it lines the lumen of the digestive tract

Answer 24

mucosa

Question 25

made up of epithelium, connective tissue, and a very thin layer of smooth muscle

Answer 25

mucosa

Question 26

it has many blood and lymphatic vessels to absorb nutrients

Answer 26

mucosa

Question 27

it has lots of lymphatic nodules to fight pathogens

Answer 27

mucosa

Question 28

it is made up of connective tissue and has lots of blood and lymphatic vessels that receive absorbed food molecules. It also has lymphatic tissue

Answer 28

submucosa

Question 29

it has a nerve plexus that regulate movements and secretions of the digestive tract

Answer 29

submucosa

Question 30

it has mucin-secreting glands in the esophagus and duodenum

Answer 30

submucosa

Question 31

secrete buffers and digestive enzymes in pancreas

Answer 31

exocrine cells

Question 32

secrete hormones in pancreas

Answer 32

endocrine cells

Question 33

regulate movements and secretions of digestive tract

Answer 33

nerve plexus of submucosa

Question 34

where does the submucosa contain mucin-secreting glands?

Answer 34

esophagus and duodenum

Question 35

t is made up of skeletal muscle or smooth muscle

Answer 35

muscularis externa

Question 36

it has a nerve plexus that controls the frequency and strength of contraction of smooth muscle

Answer 36

muscularis externa

Question 37

areolar connective tissue with dispersed collagen and elastic fibers

Answer 37

adventitia

Question 38

same as adventitia but covered by a visceral peritoneum

Answer 38

serosa

Question 39

controls the frequency and strength of contraction of smooth muscle

Answer 39

muscularis externa

Question 40

what part of muscularis externa contain skeletal muscle

Answer 40

mouth
pharynx
superior
middle parts of esophagus
anus

Question 41

what part of the muscularis externa contains smooth muscle

Answer 41

lower part of esophagus and the rest of GI tract contain 2 or 3 layers of smooth muscle