human digestive system l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Human Digestive System PowerPoint Presentation
Download Presentation
Human Digestive System

Loading in 2 Seconds...

play fullscreen
1 / 9

Human Digestive System - PowerPoint PPT Presentation


  • 231 Views
  • Uploaded on

Human Digestive System. Functions. Ingest food Break down food Move through digestive tract Absorb digested food and water Eliminates waste materials. Mouth. Breaks down food into small pieces Begins starch digestion (amylase) Saliva produces amylase and lubricates food

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Human Digestive System' - johana


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
functions
Functions
  • Ingest food
  • Break down food
  • Move through digestive tract
  • Absorb digested food and water
  • Eliminates waste materials
mouth
Mouth
  • Breaks down food into small pieces
  • Begins starch digestion (amylase)
  • Saliva produces amylase and lubricates food
  • Moves food into esophagus
  • Epiglottis covers trachea
  • Peristalsis moves food to stomach
stomach
Stomach
  • First opening – cardiac sphincter
  • Muscles churn food – more mechanical digestion.
  • Glands produce gastric juice = pepsin + HCl
  • Pepsin breaks down proteins (only at pH 2)
  • Food leaves after 2-4 hrs
  • Second opening – pyloric sphincter
small intestine
Small Intestine
  • Digestion is finished here
    • Peristalsis finishes mechanical digestion
    • Pancreatic juice produces enzymes to finish chemical digestion of fats, proteins and carbohydrates

Question: What are the monomers for fats, proteins, and carbohydrates?

liver
Liver
  • Produces bile

Question: What is the function of bile?

Bile is stored in the gallbladder.

large intestine
Large Intestine
  • Absorbs water
  • Bacteria live here (produce methane)
  • Bacteria produce B vitamins and Vitamin K
  • Stores solid waste in rectum until elimination.
endocrine glands
Endocrine Glands

Define endocrine gland here.

  • Pancreas – insulin = blood sugar
  • Thyroid – thyroxine = metabolic rates
  • Thyroid – calcitonin = blood calcium levels
  • Parathyroid – PTH = calcium, phosphorus absroption rates and helps make Vitamin D