Digestion can be broken into 3 stages 1. Break down of solid food 2. Nutrient absorption 3. Water absorption But where do these stages occur?

The Digestive SystemHow our bodies break down

and use food

Components

Digestion can be broken into 3 stages

1. Break down of solid food

2. Nutrient absorption

3. Water absorptionBut where do these stages occur?

Stage 1: The Blender

The Players: Mouth – Mechanical

breakdown Salivary Glands –

chemical breakdown Esophagus - transport Stomach – complete

breakdown

- Mouth: The Pulverizer, big pieces into little pieces

- Salivary Glands: secrete enzymes in saliva

- Esophagus: lined with smooth muscle and mucus.

- Stomach: secretes HCl and digestive enzymes. Contracts and churns to aid in digestion

Esophageal sphincter

Stage 1: The BlenderThe Players: Mouth – The Juggernaut Salivary Glands – The Assassin Esophagus – Getaway Driver/Vehicle Stomach – Demolitions Expert

Stage 2: The Filter

The Player: Small Intestine

Duodenum : Adds bile from bile duct, more digestion (10 inches)

Jejunum: Nutrient absorption (3 feet)

Ilium: Nutrient absorption (6 feet)Why the difference in length?

Stage 2: The Filter

Stage 2: The FilterThe Player: The Mosh Pit Duodenum : “DJ Bile” plays your jam!

OMG! Jejunum: Wall of mosh pit churns and

jostles the “moshers.” The Drop = high Intensity

Ilium: Outro of song = low intensity

Stage 3: The Sponge

The Player: Large Intestine

Colon– Water absorption. Bacterial digestion = vitamins and methane.

Rectum– Storage Anus- . . . EXIT

Stage 3: The Sponge

Colon – “The Hugger,” Dab, Dab, Don’t Rub.

Rectum & Anus – Keeps “old things”. Highly sensitive. So sensitive and hip, you probably wouldn’t understand.

The Player: Large Intestine - The Transcendental Hipster Lovely Aroma

Stage 3: The Sponge

“Get the heck outta here!!” “Come here and give me a hug”