Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients...
-
Upload
jonathan-melton -
Category
Documents
-
view
212 -
download
0
Transcript of Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients...
![Page 1: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/1.jpg)
Liz Lauben1
Digestion
![Page 2: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/2.jpg)
Liz Lauben2
Introduction
Digestion is defined as the breakdown of nutrients
We consume: Proteins Carbohydrates Fats These are broken down into their simplest
forms
![Page 3: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/3.jpg)
Liz Lauben3
From Beginning to End
Mouth Esophagus Stomach Small intestine Large intestine Anus
![Page 4: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/4.jpg)
Liz Lauben4
Mouth
Mechanical digestion: the act of chewing Carbohydrate digestion begins here Saliva moistens food and contains the enzyme
Salivary Amylase – breaks down complex carbs into simple sugars
Chemical Digestion: enzymes breaking down carbohydrates
Ball of moistened, partially digested food, known as the “BOLUS”, moves into the esophagus
![Page 5: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/5.jpg)
Liz Lauben5
Esophagus
Long tube through which “bolus” moves down into the stomach
The contraction of muscles pushes the food down – known as PERISTALSIS
![Page 6: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/6.jpg)
Liz Lauben6
Stomach
Protein digestion begins here Gastric Glands: Parietal Cells Chief Cells Chief Cells release HCl, the acidity kills foreign
material and bacteria Parietal Cells release the inactive enzyme
Pepsinogen. This combines with HCl to create active form: Pepsin
Pepsin breaks down proteins into smaller polypeptide chains or amino acids
![Page 7: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/7.jpg)
Liz Lauben7
Just a Reminder… Both types of digestion are occurring in
the stomach: Mechanical and Chemical The churning of the stomach is considered
mechanical digestion The enzyme activity is considered
chemical digestion
![Page 8: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/8.jpg)
Liz Lauben8
Small Intestine
Continuation of Carbohydrate and Protein Digestion; beginning of Fat digestion
LIVER: releases bile that breaks down fats into fatty acids
PANCREAS: releases pancreatic juices, one of which completes protein digestion (proteins to amino acids) and carbohydrate digestion (complex sugars into simple monosaccharides)
Absorption of simple nutrients through villi occurs here
![Page 9: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/9.jpg)
Liz Lauben9
Large Intestine
Unabsorbed material moves through large intestine, where water and salt are absorbed
This removal of liquid forms solid-like feces
Feces is stored in the colon Feces is removed from the body, via the
anus
![Page 10: Liz Lauben 1 Digestion Liz Lauben 2 Introduction Digestion is defined as the breakdown of nutrients We consume: Proteins Carbohydrates Fats These are.](https://reader035.fdocuments.us/reader035/viewer/2022072013/56649e545503460f94b4a965/html5/thumbnails/10.jpg)
Liz Lauben10