The Digestive System
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| 7ut8rne47t894un89yb45nm9 | show 🗑
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| show | mouth, pharynx, esophagus, stomach, small intestine, & lg. intestine
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| name the accessory digestive organs | show 🗑
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| ingestion | show 🗑
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| propulsion | show 🗑
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| peristalsis | show 🗑
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| show | physically prepares food for chemical digestion by enzymes; chewing, mixing of food w/ saliva by the tounge, churning food in the stomach & segmentation
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| segmentation | show 🗑
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| show | 789789789678978960#@$&*()_
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| absorption | show 🗑
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| show | small intestine
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| show | eliminates indigestible substances from the body via the anus in the form of feces
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| list the six essential activities for processing food by the digestive system | show 🗑
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| two things that apply tot eh regulatory mechanisms | show 🗑
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| sensors (location & response) | show 🗑
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| show | (1) activate or inhibit glands that secrete digestive juices into the lumen or hormones into the blood or (2) mix lumen contents & move them along th elength of the tract by stimulating the smooth muscle of the GI tract walls
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| show | nerve plexuse; they extend & influence each other; aquires two kindes of reflexes (short & long)
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| show | mediated entirely by the local (enteric) plexuses (so-called gut brain ) in response to GI tract stimuli
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| show | initiated by stimuli arising within or outside the GI tract & involve CNS centers & extrinsic autonomic nerves
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| the stomach & sm. intestin contain hormone-producing cells that are distributed via the | show 🗑
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| peritoneum | show 🗑
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| visceral peritoneum | show 🗑
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| parietal peritoneum | show 🗑
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| peritoneal cavity | show 🗑
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| show | lubricates the mobile digestive organs & allows them to glide easily across one anothe & alon the body wall as they cary outh their digestive activites
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| mesentery | show 🗑
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| retroperitoneal organs | show 🗑
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| show | digestive organs (like the stomach) that keep their mesentery & remain in the peritoneal cavity
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| show | inflammation of the peritoneum, can arise from a piercing wound of the abdomen or from a perforating ulcer that leaks stomach juices intot he peritoneal cavity, most commonly from a burst appendix
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| splanchnic circulation | show 🗑
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| show | mucosa, submucosa, muscularis externa & serosa
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| mucosa | show 🗑
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| explain what secretion does during the mucosa | show 🗑
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| show | absorption of the end products of digestion into the blood
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| explain protection in the mucosa | show 🗑
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| name the typical digestive mucosas sublayers | show 🗑
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| the epithelium of the mucosa is a | show 🗑
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| the slippery mucus it produces protects certain digestive organs from | show 🗑
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| show | underlies the epithelium, is loose areolar (or reticular) connective tissue; its capillaries nourish the epithelium & absorb digested nutrients
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| show | the mucosa-associated lymphatic tissue are importanct in the defense against bacteria & other pathogens, which have rather free access to our digestive tract
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| peristalsis mucosae | show 🗑
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| show | external tot he mucosa; moderately dense connective tissue containing blood & lymphatic vessels, lymph nodules & nerve fibers; enables the stomach to regain its normal shape after temporarily storing a large meal
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| show | deep to the submucosa; responsible for segmentation & peristalsis (mixes & propels foodstuffs along the digestive tract)
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| the musclaris externa layers are | show 🗑
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| show | act as valves to prevent backflow & control food passage from one organ to the next; occurs from the circular lyer thickens
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| the serosa | show 🗑
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| adventitia | show 🗑
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| show | the alimentary canals own in-house nerve supply which communicate widely w. each other to regulate digestive system activity;constitute the bulk of the two mj intrinsic nerve plexuses found within the walls of the alimentary cnal; submucosal & myenteric n
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| show | occupies the submucosa & chiefly regulates the activity of glands & smooth muscle in the mucosa tunic
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| myenteric nerve plexus | show 🗑
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| show | filiform, fungiform, & circumvallate
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| show | give the toung surface a roughness that aids in licking semisolid foods & provide friction for manipulating foods inthe mouth (their the smallest and most numoruse); contain keratin which stiffens them & gives tounge whitish apperance
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| fungiform papillae | show 🗑
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| show | 1)cleanses the mouth 2)dissolves food chemicals so they can be tasted 3) moistens food & aids in compacting it intoa bolus 4) contains enzymes that begin the chemical breakdown of starchy foods
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