Gastric Emptying Digestion And Absorption

Question 0

In the stomach

Answer 0

In the stomach, food is mixed with gastric secretions (hydrochloric acid and digestive enzymes)

Question 1

Gastric emptying is influenced by?

Answer 1

The volume of food energy density, osmolarity, dehydration, psychologicalstress and anxiety, and to a lesser degree by exercise intensity, meal temperature and gender.

Question 2

Chewing food does what?

Answer 2

Chewing food makes the food particles smaller and increases the surface area of the food. This increases the contact area for the digestive enzymes. Chewing also makes is the food particles with saliva and digestive enzymes.

Question 3

The primary function of the gastrointestinal.

Answer 3

It’s a 6 to 8 m long tubular structure that reaches from the mouth to the anus, is to provide the body with nutrients.

Question 4

What are pancreatic juices and bile for?

Answer 4

Pancreatic it juices and bile are added to the chyme in the duodenum to digest the carbohydrates, fat, and protein. Specialized in zymes split these micronutrients into the smallest subunits for absorption. Bile is added to emulsify lipid droplets and facilitate digestion and absorption.

Question 5

Where does 90% to 95% of all absorption take place?

Answer 5

About 90% to 95% of all absorption takes place in the duodenum and jejunum (first parts of the small intestine nine).

Question 6

What is the large intestine for?

Answer 6

The large intestine nine is a storage place for Undigested food residues and the final water and electrolyte absorption occurs there.

Question 7

Gastro Neil problems and incidents are increased by?

Answer 7

Gastrointestinal problems are a common phenomenon, mainly among endurance athletes, and the incidence is increased by physiological factors, mechanical factors, and nutrition.

Question 8

Salivary glands

Answer 8

Release enzymes and protect against oral bacteria

Question 9

Secretin

Answer 9

Stimulates bicarbonate secretion in pancreatica juice

Question 10

Esophageal sphincter

Answer 10

Dysfunction can cause heartburn

Question 11

Large intestine

Answer 11

Store species until they can be expelled

Question 12

Motility

Answer 12

Refers to the movement of food in the G.I. tract

Question 13

Probiotics

Answer 13

Beneficial bacteria that can be found in yogurt

Question 14

Liver

Answer 14

Processes nutrients that are sent from the intestines

Question 15

Active transport

Answer 15

Mode of absorption

Question 16

Gallbladder

Answer 16

Stores bile

Question 17

Villi

Answer 17

Finger-like projections in the small intestine nine

Question 18

The G.I. tract is a ______ long tubular structure that reaches from the mouth to the anus

Answer 18

6-8m

Question 19

List the three primary digestive functions of the stomach

Answer 19

1) Stores large quantities of food and tell it can be accommodated into the intestine.
2) Mixes food with gastric secretions and hydrochloride HCI acid to break down proteins and form a homogenous, acidic, soup like liquid or paste called chyme.
Regulates emptying of chyme into small intestine by action of the pyloric sphincter.

Question 20

True or false?
The folds of Kirkmore, villi and microvilli in the large intestine nine all function to increase surface area for optimal absorption of nutrients.

Answer 20

False

Question 21

Hormone: gastrin
secreted by:
effect:

Answer 21

Hormone: gastrin
secreted by: stomach
effect: stimulates HCI production, stimulates secretion of pepsinogen

Question 22

Hormone: Gastric inhibitory peptide GIP
secreted by:
effect:

Answer 22

Hormone: Gastric inhibitory peptide GIP
secreted by: small intestine
effect: inhibit to gastric motility and secretion

Question 23

Hormone: Glucagonlike per tide I (GLP-I)
secreted by:
effect:

Answer 23

Hormone: Glucagonlike per tide I (GLP-I)
secreted by: ileum and colon
effect: inhibits gastric motility and secretion

Question 24

Hormone: secretin secreted by: effect:

Answer 24

Hormone: secretin secreted by: small intestine effect: stimulate water and bicarbonate secretion in pancreatic juice

Question 25

Hormone: Cholecystokinin (CCK) secreted by: effect:

Answer 25

Hormone: Cholecystokinin (CCK) secreted by: small intestine effect: stimulates secretion of enzymes and inhibits gastric motility

Question 26

Hormone: Guanylin Secreted by: Effect:

Answer 26

Hormone: Guanylin Secreted by: ileum and colon Effect: causes removal of NaCi and water from feces

Question 27

Which of the following components of the G.I. tract secretes sodium bicarbonate to buffer the acidity of digested food released from the stomach? A: liver B: Pancreas C: small intestine D: gallbladder

Answer 27

B: Pancreas

Question 28

Which of the following components of the G.I. tract provides for approximately 95% of all nutrient absorption? A: stomach B: liver C: large intestine D: small intestine

Answer 28

D: small intestine

Question 29

Which of the following hormones is secreted in the stomach to stimulate hydrochloric HCI acid production for the breakdown of nutrients and elimination of bacteria? A: secretin B: Guanylin C: gastrin D: cholecystokinin (CCK)

Answer 29

C: gastrin

Question 30

True or false? Prolonged chewing of a single cracker causes it to taste sweeter because salivary enzymes break down starches and complex carbohydrates into simple sugars

Answer 30

True

Question 31

List 3 effects that HCI acid house on protein in the stomach

Answer 31

A) activates the metabolic enzyme pepsin B) deactivates hormones within the Protein C) kills pathogenic organisms within the protein

Question 32

_____ requires energy in the form of ATP to facilitate absorption of nutrients

Answer 32

Active transport

Question 33

True or false? Fatty acid's can enter circulation through the lymphatic system, the subclavian vein's and the hepatic portal vein to be transported to the liver.

Answer 33

True

Question 34

True or false? The large intestine contains about 1 kg of various bacteria, while the stomach and small intestine's have much lower quantities do to gastric acid.

Answer 34

True