Focus 11

Question 1

Propulsive and mixing movements

Answer 1

Motility

Question 2

Exocrine glands and endocrine cells

Answer 2

Secretion

Question 3

Breakdown of food stuff

Answer 3

Digestion

Question 4

Absorbable units, water, vitamins, and electrolytes

Answer 4

Absorption

Question 5

4 layers of GI tract wall

Answer 5

1. Mucosa
2. Submucosa
3. Muscularis externa
4. Serosa

Question 6

Contains blood/lymph vessels.

Answer 6

Submucosa

Question 7

Secretion and absorption

Answer 7

Mucosa

Question 8

Sucrose broken down into

Answer 8

Glucose and fructose

Question 9

Maltose broke down into

Answer 9

Two glucose

Question 10

Lactose broken down into

Answer 10

Glucose and galactose

Question 11

Digestion to absorbable units is accomplished by

Answer 11

Hydrolysis

Question 12

Begins Chemical digestion in the mouth

Answer 12

Salivary amylase

Question 13

Pepsinogen is activated by _______ and becomes pepsin

Answer 13

Hydrochloric acid HCl

Question 14

Secretes mucus, intrinsic factor, and histamine

Answer 14

Stomach cells

Question 15

Speeds up HCl secretion

Answer 15

Histamine

Question 16

Polysaccharides - maltose

Answer 16

Pancreatic amylase

Question 17

Dietary triglycerides - monoglycerides and free fatty acids

Answer 17

Pancreatic lipase

Question 18

Protein - small peptide chains and amino acids

Answer 18

Trypsinogen - trypsin

Question 19

Brush boarder enzymes

Answer 19

• sucrase
• maltase
• lactase
• aminopeptidase

Question 20

Emulsification of lipids. Increases surface area for pancreatic lipase.

Answer 20

Bile salts

Question 21

Major contractile activity of SI. Rhythmic local contractions that increase exposure to enzymes and absorption

Answer 21

Segmentation

Question 22

Weak/gradual peristalsis

Answer 22

MMC migrating motility complex

Question 23

Increases surface area, chemical digestion, and absorption in the SI

Answer 23

Villi and microvilli

Question 24

Is absorbed passively to lymph

Answer 24

Lipids (fatty acids)

Question 25

Co-transports with Na into blood. Secondary active transport

Answer 25

Glucose Galactose Fructose Proteins (Amino acids)

Question 26

Removes wastes, pathogens, hormones, ect from proteins

Answer 26

Hepatic sinusoids

Question 27

SI to liver pathway

Answer 27

Portal vein and hepatic artery Sinusoids Hepatic vein Vena cava

Question 28

Water and salt absorption occurs in the...

Answer 28

Large intestine

Question 29

Slowly shuffles contents back and forth in LI and increases absorption

Answer 29

Haustral contractions

Question 30

Ascending and transverse colon contract simultaneously

Answer 30

Mass movements

Question 31

Intrinsic control of the GI tract

Answer 31

Enteric NS

Question 32

Hormone produced in stomach. Increases churning, HCl, histamine release, mass movements

Answer 32

Gastrin

Question 33

Hormone produced in SI. Decreases peristalsis and gastric juice release in stomach. Increase HCO3 secretion and bile production.

Answer 33

Secretin

Question 34

Hormone produced in SI. Increases pancreatic enzymes and bile from gall bladder

Answer 34

CCK cholecystokinin

Question 35

What are the four basic digestive processes

Answer 35

- mobility - secretion - digestion - absorption