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Published byMagdalen Dean Modified over 9 years ago
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Digestive System Organs Involved
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Mouth n Oral Cavity n Food enters – Ingested n Roof, Walls, Floor Mucous Membrane n Physical & Chemical Breakdown of food
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Teeth n Physical Breakdown of Food n Mastication n 2 years old – 20 n 17 to 24 – 32 n 4 Types Incisors Canines Premolars Molars
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Tongue n Muscle Moves food around in mouth Bolus n Frenulum Connects tongue to floor n Sensory n Small Elevations Papillae –Salt –Sour –Sweet –Bitter
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Salivary Glands n Produce Saliva n Chemical Breakdown Salivary Amylase Carbohydrates n 3 Pair
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Pharynx n Tube n Smooth muscle n Mucous Membrane n Back of mouth Connects with Respiratory
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Esophagus n Tube n Smooth Muscle n Connects Pharynx to Stomach n About 25 cm long
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Know these Parts n Nasopharynx n Esophagus n Tongue n Molars n Parotid Salivary Gland n Oropharynx n Epiglottis n Laryngopharynx n Submandibular Salivary Gland n Sublingual Salivary Gland n Incisors
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Know these terms n Ingestion n Digestion n Physical Breakdown n Chemical Breakdown n Chyme n Bolus n Mastication n Peristalsis n Salivary Amylase n HCl
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STOMACH n Smooth Muscle Mechanical Breakdown –Peristalsis n Gastric Glands Chemical Breakdown –Hydrochloric Acid & Enzymes n Chyme
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LIVER n Under Diaphragm n Largest Gland n Produces Bile Emulsifies Fat Mechanical
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GALL BLADDER n Under Liver n Stores Bile Fat in Duodenum Triggers hormone Cholecystokinin CCK
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PANCREAS n Behind Stomach n C Shaped n Produces Pancreatic Juice Most Important –Digests ALL 3 foods Insulin –Blood Stream
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SMALL INTESTINE n Twisted 7m long n Smooth Muscle n Intestinal Glands Digests Food n Villi Increase Surface Area Nutrients Diffuse into Blood
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Parts n Duodenum Right after stomach Pancreas & Liver Dump n Jejunum Most Digestion n Ileum Empties into Large Intestine
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LARGE INTESTINE n Chyme to Fecal Matter n Water & Salts Reabsorbed n Bacteria Breakdown Cellulose Produce Vitamin K Some B Vitamins
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n ASCENDING n TRANSVERSE n DESCENDING n SIGMOID n RECTUM
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APPENDIX n Start Distal Ascending Colon n Twisted n Great spot for bacterial growth
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