BiologyII_DigestionandHormones.doc - B i o lo g y I I...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Digestion Body Part Function in the Digestive System Enzymes/Chemicals Used to Digest Food Mouth Mechanically break down food for passafe through esophagus Salivary Amylase (startch) - secreted by salivary glands Esophagus Transport food from mouth to stomach via peristalsis. None Separated from stomach by esophageal sphincter (*loss of sphincter tone may lead to gastroesophageal reflux) Stomach Continue mechanical digestion, begin chemical digestion (starches into polysaccharides, proteins into peptides) Hydrochloric acid - maintains acid medium of stomach, activates pepsinogen to pepsin Separated from duodenum by pyloric sphincter Pepsinogen - pepsinogen converted to pepsin by HCl, breaks down protein to peptides Intrinsic factor - binds to B12 in the stomach Small Intestine Divided into duodenum, jejunum, ileum based on microscopic appearance and reabsorptive abilities. Enterokinase: activatese trypsinogen Continue chemical digestion (polysaccharides into single sugars, peptides into amino acids)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/21/2011 for the course BIOLOGY PCAT taught by Professor Mcfadden during the Spring '11 term at Kaplan University.

Page1 / 2

BiologyII_DigestionandHormones.doc - B i o lo g y I I...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online