Digestive System Homework PDF

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DIGESTIVE SYSTEM SUMMARY TABLE NAME OF DIGESTIVE ORGAN

STOMACH (GASTRIC)

LIVER

ALIMENTARY CANAL OR ACCESSORY?

Alimentary canal

Accessory organ

MUCUS PEPSIN SECRETIONS

HYDROCHLORIC ACID

BILE

INTRINSIC FACTOR GASTRIN

DIGESTIVE FUNCTION

PEPSIN BREAKS proteins INTO PEPTIDES HCl DENATURES THE pepsinogen into pepsin

HORMONAL CONTROL OF SECRETIONS?

mucus SECRETED PROMOTES RELEASE OF GASTRIC JUICE, ETC.

EMULSIFICATION OF FATS= bile salts **role in digestion is to secrete bile

Hepatopancreatic sphincter OPENS COMMON BILE DUCT WHEN FATTY CHYME FILLS DUODENUM

DIGESTIVE SYSTEM SUMMARY TABLE NAME OF DIGESTIVE ORGAN

GALL BLADDER

PANCREAS

SMALL INTESTINE

ALIMENTARY CANAL OR ACCESSORY?

Accessory organ

Accessory organ

Alimentary canal

Stores and concentrates bile

**secretes insulin and glucagon to regulate blood glucose

Receives chime from stomach and liver and pancreatic secretions

EMULSIFICATION OF FATS

AMYLASE: salivary and pancreatic amylase break down starch and glycogen into disaccharides

SUCRASE, MALTASE, LACTASE: break down disaccharides into monosaccharides

PROTEASES: pancreatic proteases break down proteins and polypeptides into smaller peptides

LIPASES: break down fats into fatty acids and glycerol

SECRETIONS

DIGESTIVE FUNCTION

Bile ducts

LIPASES: fat digestion and absorption in the small intestine

HORMONAL CONTROL OF SECRETIONS?

CCK CAUSES CONRTACTION OF GALLBALLDER AND OPENS COMMON BILE DUCT WHEN FATTY CHYME FILLS DUODENUM

SECRETIN CAUSES PANCREATIC JUICE TO BE DEPOSITED INTO DUODENUM

N/A

DIGESTIVE SYSTEM SUMMARY TABLE MACROMOLECULE INGESTED

CARBOHYDRATES

PROTEINS

FATS (TRIGLYCERIDES OR TG)

SITE OF DIGESTION

1.salivary glands 2.

1.stomach initiates protein digestion 2. moves food into small intestine

1. pancreas

DIGESTIVE ENZYME(S)

1. salivary amylase digests carbohydrates

1.PEPSIN *HCl 2. PANCREATIC PROTEASES 3. PEPTIDASES

1.LIPASES *BILE

PROTEINS TO PEPTIDES

Pancreatic lipase breaks down triglycerides

2. PANC. AMYLASE 3. END-PRODUCT(S)

1 & 2. STARCH AND GLYCOGEN TO DISACCHARIDES

PEPTIDES TO AMINO ACIDS

3. DISACCHARIDES TO MONOSACCHARIDES SITE AND MODE OF ABSORP-TION

DISTAL SM. INTESTINE FACILITATED DIFFUSION

DISTAL SM. INTESTINE ACTIVE TRANSPORT

REGULATION

Keep ph favorable for enzyme activity and protect teeth from acidic foods

Forms in presence of hydrochloric acid

DISTAL SM. INTESTINE SIMPLE DIFFUSION

Digests proteins —released as inactive trypsinogen...