ANPS 1200 (E4, L1)

What is the alimentary canal?

Tube food travels through (mouth to anas)

What are accessory digestive organs?

organs that help digestion but food doesn’t pass through

Name 3 accessory organs

Salivary glands, liver, pancreas

What is the peritoneum?

Serous (thin) membrane lining abdominal cavity

Difference between parietal and visceral peritoneum

-parietal=lines wall

-visceral=covers organs

What is the mesentary?

Fold that holds organs and carries blood/nerves

Function of peritoneal fluid?

Reduces friction

List GI tract layers (inner to outer)

1) Mucosa

2) Submucosa

3) Muscularis Externa

4) Serosa

Mucosa function?

1) Absorption

2) Secretion

3) Protection

All Secrets Protected

Submucosa function?

1) Support

2) Blood Supply

3) Nerves

Stark Banner Natasha

Muscularis Externa function?

movement (peristalsis)

Serosa function?

Protection

Reduces Friction

tissue in muscularis externa?

SM

what is injestion?

taking in food

what is propulsion?

moving food

what is mechanical breakdown?

physical breakdown of food

what is chemical digestion?

enzymes break food

what is absorption?

nutrients enter blood

what is defecation?

waste elimination

what are the 6 essential digestive functions in order?

1) Injestion → eating food

2) Propulsion → moving food

3) Mechanical Breakdown → physically break food

4) Chemical Digestion→ enzymes break food

5) Absorption nutrients enter blood

6) Defecation → waste leaves body

I Packed My Coffee And Donuts

what is the ENS?

nerves in the GI tract wall

what does the ENS control?

motility + secretion

ENS + ANS relationship?

ANS regulates ENS

Parasympathetic effect?

increases digestion

Sympathetic effect?

decreases digestion

main functions of oral cavity?

Swallowing

Digestion

Chewing

San Diego College

What is a bolus?

ball of food

tongue function?

Move food + swallowing

main enzyme in saliva?

amylase

saliva function?

Begins Digestion

Cleans

Moistens

Boston College Mass

What type of digestion begins in the mouth?

Carbohydrate digestion

Pharynx function?

moves food to esophagus

Esophagus function?

moves food to stomach

what is peristalsis?

wave like movement of food

upper esophageal sphincter function?

prevents air entry

lower esophageal spincter function?

prevents acid reflux

first phase of swallowing?

voluntary (oral phase)

later phases of swallowing controlled by?

involuntary reflexes

what prevents food from entering airway?

epiglottis