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44 Cards in this Set

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Digestive system Functions name the 4. DADE
1.Digestion 2. Absorption 3. Detoxification (liver) 4.Excretion
Digestion definition
The mechanical and chemical breakdown of foods into forms that cells can absorb
Ingestion-define
taking food into the mouth.
Absorption-define
the passage of digested food from GI tract into bloodstream (and lymph) for distribution to cells.
Digestive Organs has Two categories the _________ canal which extends from _____ to _____. And the __________ organs.
Alimentary, from mouth to anus. Accessory organs.
Name the 6 alimentary organs.
Mouth, pharynx, esophagus, stomach, small intestine, large intestine
The Accessory organs release _________ into the alimentary canal that help _____ food. Name the 4 organs. Sal has some Gall putting that liver in the pan
Secretions, digest. 1.salivary glands 2.liver 3.gallbladder 4.pancreas
Think about this: What does the structure do to contribute to The FUNCTIONS of the DIG System and The GOAL of DIGESTION Mouth and teeth _____-up food. Add saliva. Salivary Glands secrete enzyme _________ which breaks down ________ into __________. The function is to _______ food and make it easier to _______. The food is now a wet mucus ball (called a ________)and is ready to transport to the __________.
grind-up, amylase, starches into disaccharides, moisten, swallow. Bolus esophagus.
Movement in the digestive system 2 types. Name them and describe them.
Peristalsis-movement and propulsion and segmentation-mixing
Salivary Glands produce and secrete enzymes 1-__________ and 2- lingual _______. Name 2 Functions
1. amylase 2. lipase 1-Dissolve and mix with food to form BOLUS for easy swallowing and transport through esophagus. 2-Start the digestion of food by providing enzymes to break it down.
Nasopharynx and Swallowing Breathing and Swallowing share some equipment! During swallowing bolus passes into ________. The ______ moves a flap (epiglottis) over the breathing passage (Trachea) to close it off.
Pharynx and larynx.
Aspiration define
getting food into the trachea.
4 layers of the alimentary canal (tube) Name and give its function. MSMS
1. Mucosa (innermost lining) secretion and absorption. 2. Submucosa- support: blood vessels, nerves. Lymph 3. Muscular- mixing and propulsion, 4. Serosa-cover and protection.
Esophagus is a _________ tube. Function is _________ only, __ __________ takes place here.
Muscular tube, transport only, no digestion/or absorption takes place here.
If esophagus is broken contents from ________back up to the ________ that's acid reflux.
Stomach, esophagus.
Stomach is a very vascular organ. It can be difficult to control __________ in the stomach.
bleeding
Rugae are ____ in the stomach so the stomach can compress or expand.
Folds.
Functions of the stomach changes bolus into ______ (which is a paste) via ________. Secretes enzymes to digest ______. Moves food along to the ___ intestine. Does limited _______.
chyme, churning, proteins, small, absorption.
The lining of the stomach has gastric ___ that are cells that secrete acid, _______, and _______.
pits, enzymes, mucus.
Gastric secretions: An Indian Chief is drinking Pepsi-n-Gin, goes to a Party House In Clio which In Fact produces Much Gas.
Chief cells make pepsinogen (the inactive form of pepsin); Parietal cells make HCl And Intrinsic Factor; Mucus from mucous (goblet) cells; Enterendocrine cells make Gastrin.
Function of Pepsin? HCl? Intrinsic Factor? Mucus? Gastrin?
Pepsin-breakdown proteins, Intrinsic Factor-help w/ absorption of Vitamin B12; Mucus-protect against acid; Gastrin-promotes secretion of gastric juice. HCl kills bacteria, breaks down cell walls of plant cells, denatures proteins, converts pepsinogen to pepsin.
Digestive System has lots of enervation. Secretions need to be ________ and movement needs to be ________.PNS _________ digestion and the SNS _______digestion.
Timely, appropriate. Increases, decreases.
Regulation of gastric secretions is both: Neural the _________ system increasing gastric secretions and the ____________ decreasing gastric secretions; and Hormonal.
Parasympathetic, sympathetic.
Hormones of the GI system:(made by? And function?) Gas, intense Gas! I need a Tomato Stat! A big Tomato with a goalie inside it. The goalie is my sis. She is kind but secretive.
Gastrin(made by gastric cells in response to food-function: increase gastric juice), Intestinal Gastrin (made by cells in small intestine in response to chyme, function: increase gastric juice), Somatostatin (made by Gastric cells, function: inhibit acid production), Cholcyto-kinin(CCK) (made by intestinal wall cells in response to Protein or Fat-function: decrease Gastric Juice, stim pancreatic secretion, stim bile release), Secretin (made by cells in Small intestine in response to acid chyme, function: stim panc release of HCO3).
Phase of Gastric Secretion 1)Cephalic phase triggered by? Parasympathetic impulses trigger? 2)Gastric phase triggered by? What is released? What is secreted? 3)Intestinal phase triggered by ? Intestinal cells release ? Secretion of ?
1. a)triggered by smell, taste, sight, or thought of food, b) parasympathetic impulses trigger gastric juice secretion 2.a)triggered by presence of food in stomach b) gastrin released c)gastric juice secreted 3. a)triggered by movement of food into small intestine b)intestinal cells release intestinal gastrin c)secretion of gastric juice
cephalic phase-triggered by _____-_____ food, _______food, or _________food. _____________ -nervous system increases stomach ______, ____ production, Mucus production, and ______ production. Both ____and _______ further stimulate release of gastric juice.
Thinking-about, smelling or seeing food. Parasympathetic, churning, HCl, Gastrin, HCl and Gastrin.
Gastric phase stomach is ________ by food. Stretch ________ carry info to the brain, stimulate the _________-nervous system. _____receptors sense a drop in ______ as food dilutes stomach ____ resulting in ______ secretion.
Stretched, receptors, parasympathetic. Chemoreceptors, acidity, acid, Gastrin
Intestinal phase food enters the ___________. When food 1st enters the small bowel cells in the ____- secrete __________ gastrin which causes more _____-_____ to be secreted.
Duodenum, duodenum, intestinal, gastric juice.
CCK (cholecytsokinin) is release due to _____ foods. CCK delays _______ ________. enterogastric reflex a signal is sent from _____ receptors in the ________ which ______ the Vagus nerve signal to the stomach.
Fatty foods. Gastric emptying, stretch, duodenum, lowers.
Pancreas secretes pancreatic juice which de-______ gastric contents. Enzymes break down: _____, carbs, fats and _____-acids.
Acidifies, proteins, nucleic acids.
Pancreatic Enzymes Pan kissed made Amy's lips so big they tryp car-boxes in chy-town.
Amylase, lipase, trypsin, carboxypeptidase, chymotrypsin. Nucleases.
Lipase breaks apart what? Maltase breaks apart what? Nuclease breaks down what?
Fatty acid, from glycerol. Maltose. DNA/RNA into nucleotides.
Pancreas and it's endocrine function. Insulin and glucagon. Glucagon is released when glucose is ____ and causes an ___ in glucose. Insulin is released when glucose is ___ and causes a ___ in glucose. [Gl-amorous GIG]
low/increase. high/decrease.
Veinous drainage from the digestive system goes to the _____ 1st then to the inferior vena cava.
Liver.
Bile is releases in response to ____. It breaks big ____ globules into smaller globules. It does not change the chemical structure of nor does it digest ____. It enters the duodenum and is absorbed by the ____-_______.
CCK, fats, fats, small intestine.
Small intestine 3parts: D______, J_______, I_______. Cecum is pouch.
Duodenum, Jejunum, ilium.
Function of small intestine is both ______ and ________. ________ is completed in the sm. Intestine.
digestion and absorption. Digestion.
Because the greater the surface area the more it absorbs, the sm. Intestine has circular ____ or Plicae circulares which have ____ which have micro____.
Folds, villi, microvilli.
Appendiix does what?
Resets the bacteria to norm.
Large Intestine there is No digestion. It is _______ of ____ and electrolytes. ____ and lots of bacteria live here. Unlike the small intestine movement is not constant it is a ____ movement.
Absorption, water. Mucus, mass.
Omentum is an apron a double layer of ___ (and some dense _____ tissue) that covers the gut. It acts as a barrier...if perforation it helps seal it off.
Fat, connective.
Hemorrhoids are prolapsed _____ veins, can be internal or external. Symptoms: bleeding, ____ and pain. Causes: increased pressure in veins, stress, chronic constipation, diet. Tx: symptomatic, surgery (can be fatal)
rectal, itching
Flatus is ___ expelled from ____. comes from swallowed air, ______ byproducts and bacterial metabolism (which causes ____).
Gas, digestive, odor.
Liver is the major ______ factory of the body. Important in the _____ of sugars, fats and proteins. Other functions include: storage, removing damaged ____, phagocytosis, ____. It also makes _____
Metabolic.Synthesis. RBC's, detox, Bile