Biology 38.2
Upcoming SlideShare
Loading in...5
×
 

Biology 38.2

on

  • 1,923 views

 

Statistics

Views

Total Views
1,923
Views on SlideShare
1,923
Embed Views
0

Actions

Likes
5
Downloads
90
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Biology 38.2 Biology 38.2 Presentation Transcript

  • 38.2 The process of Digestion
  • Amylase
    Enzyme in saliva that breaks the chemical bonds in starches.
  • Esophagus
    Food tube connecting the mouth to the stomach.
  • Peristalsis
    Rhythmic muscular contractions that squeeze food through the esophagus into the stomach.
  • Stomach
    Large muscular sac that continues the mechanical and chemical digestion of food.
  • Chyme
    Mixture of stomach fluids and food produced in the stomach by contracting stomach muscles.
  • Small Intestine
    Digestive organ in which most chemical digestion takes place.
  • Pancreas
    Gland that produces hormones that regulate blood sugar; produces enzymes that break down carbohydrates, proteins, lipids, and nucleic acids; and produces sodium bicarbonate, a base that neutralizes stomach acid.
  • Liver
    Large organ just above the stomach that produces bile.
  • Villus
    Folded projection that increases the surface area of the walls of the small intestine.
  • Large Intestine
    Colon; organ that removes water from the undigested materials that pass through it.
  • Key Concept
    The digestive system includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. Several major accessory structures, including the salivary glands, the pancreas, and liver, add secretions to the digestive system.
  • Key Concept
    The function of the digestive system is to help convert foods into simpler molecules that can be absorbed and used by the cells of the body.