Digestive System part 1
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| show | 1. The alimentary canal (GI tract)
2. Accessory digestive organs
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| What are the organs of the alimentary canal? | show 🗑
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| show | 1. Teeth and tongue
2. Gallbladder, salivary glands, liver, and pancreas
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| show | lie external
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| show | by ducts
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| What do the accessory digestive organs secrete? | show 🗑
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| Sate the Digestive Process. | show 🗑
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| What group of organs does Peristalsis take place in? | show 🗑
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| show | a means of propulsion by action of smooth muscle in walls of alimentary canal
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| How does Peristalsis work? | show 🗑
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| What does Peristalsis function to do? | show 🗑
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| show | in the intestines
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| show | Rhythmic coordinated constrictions of non adjacent areas of the intestines
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| What does segmentation function to do? | show 🗑
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| show | it increases the efficiency of nutrient absorption by repeatedly moving different parts of food over intestine wall
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| What is the Peritoneum | show 🗑
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| show | lines the internal surface of the body wall (abdominopelvic wall)
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| show | surrounds the digestive organs
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| Visceral and Parietal Peritoneum are what with each other? | show 🗑
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| show | a slit like potential space between Parietal Peritoneum and Visceral Peritoneum
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| There is no what in Peritoneal Cavity? | show 🗑
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| show | cavity contains serous fluid that allows organs to glide easily over one another
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| show | 1. Behind the peritoneum
2. Do NOT have a mesentary
3. only partially covered with peritoneum
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| show | they become part of the posterior abdominal wall
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| show | Liver, stomach, most small intestine, and transverse and sigmoid colon
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| What are the functions of Mesenteries? | show 🗑
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| What are Mesenteries? | show 🗑
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| show | Orangs that are almost completely covered with visceral peritoneum
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| show | mesentery
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| What are four basic layers of the wall of the alimentary canal from the esophagus to the anus? (starting with innermost layer) | show 🗑
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| What is the inner most layer of the wall of the alimentary canal? and what are its sublayers? | show 🗑
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| show | muscularis externa
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| show | 1. Extrinsic parasympathetic and sympathetic innervation
2. Intrinsic innervation by Enteric Nervous System (ENS)
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| What contains all neurons of ENS, parasympathetic, sympathetic and visceral sensory fibers of ANS? | show 🗑
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| What are two types of Nerve Plexuses? | show 🗑
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| show | 1. in the muscularis extrema
2. controls peristalsis and segmentation
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| What controls peristalsis and segmentation? | show 🗑
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| Where is submucosal nerve plexus located and what does it do? | show 🗑
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| What happens in the mouth? | show 🗑
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| What lines the mouth? | show 🗑
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| show | to help keep food inside mouth during chewing
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| What are the lips and cheeks formed from? | show 🗑
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| show | the palate
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| show | a mass of skeletal muscles covered by mucous membrane
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| show | 1. Grips food and repositions it
2. Helps form some consonants
3. Houses taste buds
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| Where are intrinsic tongue muscles and what do they do? | show 🗑
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| show | 1. external to the tongue
2. alter the position of the tongue
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| What are the three types of tongue papillae and which ones contain taste buds? | show 🗑
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| show | Parotid gland, Sublingual gland, and submandibular gland
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| show | stratified squamous epithelium
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| show | 1.voluntary skeletal muscles
2. contract in sequence, from superior to inferior, to squeeze the bolus into the esophagus
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| What innervated the Pharyngeal Constrictors? | show 🗑
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| show | esophageal hiatus
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| show | cardiac orifice
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| What closes off the lumen of the esophagus and what does this do? | show 🗑
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| The Esophagus has all 4 layers of the alimentary canal except what? and what is it replaced with? | show 🗑
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| Why does adventitia replace serosa in esophagus wall? | show 🗑
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vs604
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