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42 Cards in this Set
- Front
- Back
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What does the digestive system include?
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Oral cavity
Pharynx Oesophagus Stomach Small Intestine Anus |
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What does the large intestine consist of>
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Caecum
Colon Rectum |
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What does the small intestine consist of?
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Duodenum
Jejunum Ileum |
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What are the accessory glands of the digestive system?
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Salivary glands
Pancreas Gall Bladder Liver |
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What is the main muscle of mastication?
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Masseter Muscle
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What is the bone that forms the hard palate?
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Palatine Bone
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What is another word for picking up food?
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Prehention
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What is the central vertical cleft that forms the lips known as?
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Philtrum
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What is the tongue attached to?
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Hyoid Aparatus
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What is the tongue responsible for in the dog?
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Thermoregulation
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Parts of tract involved in ingestion
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Taking food into the body
Lips Teeth Tongue |
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Parts of tract involved in Mastication
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Food mixed with saliva
Lips Cheeks Tongue Salavary glands |
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Parts of tract involved in Digestion
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Food broken down by digestive enzymes
Stomach and Small intestine |
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Part of tract involved in Absorbtion
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Small units oass through the intestinal wass into the bloodstream
Small Intestine |
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Part of tract involved in Metabolism
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Small units are ptocessed to produce entery and material necessary for body function
Liver and all cells of body |
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Parts of tract involved in Excretion
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Remaining insoluble material passed
Large intestine Anus |
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What is the Pharynx?
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Cross over point between respiratory and digestive system.
Short muscular tube Pharynx convays food to the oesophagus |
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What is the Oesophogus?
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Simple muscular tube transports food by muscular contractions (peristalsis) throuhg thorax and diaphragm to stomach
Lined with stratified squamous beneath which lies smooth muscle Takes 15-30 secs |
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Where is stomach situated?
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Mainly on the left side cranial abdominal
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What are the stomachs functions?
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To act as resevoir prior to Digestion
To break up and mix food with gastric juices To begin protein digestion |
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What are the three regions of the stomach?
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Cardia-close to cardiac sphincter
Fundus-forms the largest area contains most juices Pylorus-Close to pyloric sphincter |
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What is the messentry called on the inner and outer curviture?
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Lesser omentum
Greater omentum |
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Where is the spleen located?
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Within the Greater omentum
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What is the name and structure of the mucus membrane lining the stomach?
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Gastric mucosa which are arranged in deep folds to allow for expantion (rugae)
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Whithin the mucosa are gastric pits wich consist of three types of cell-what are they?
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Goblet cells-secrete mucus. lubrication and protection
Cheif Cells-Secrete pepsinogen Parietal Cells-secrete hydrochloric acid, this transforms pepsinogen to pepsin>Pepsin digests protein to form peptides |
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Which hormone initiates grastric juices?
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Gastrin>gastrin triggered by distention of stomach
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What is the term used for partially digested food in the stomach?
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Chyme
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What is the time taken for liquids and solids to be passed through the stomach?
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Liquid-30mins
Solids-up to 3 hours |
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What is the messentry called holding the duodenum in place?
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Mesoduodenum
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What organ lies within the loop of the duodenum?
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Pancreas
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What is the name and function of the glands within the duodenum?
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Brunners Glands
Secrete a mixture of enzymes called Succus Entericus |
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What is the structure of the Jejunum and Ileum
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These are held by the mesojejunum and mesoileum. They are long and mobile which enables the intestine to fill any free space
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What are the glands within the Jejunum and ileum called?
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Crypts of Leiberkuhun
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Where does the ileum terminate?
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Ileocaecal Junction
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What is the structure of the inteslinal wall?
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Itis made up of folds called villi, from each cell microvilli protrude to increase the surfaces area froming a brush border.
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What is inside each villus in the intestine?
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Capillary network-carries protein and carbs via hepatic portal vein
Lymphatic capillary (lacteal) which carries chyle (digested fat) to cisterna chyli |
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What kind of gland is the pancreas?
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Mixed gland
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What does the pancreas secrete regarding the digestive system? And where does it enter the duodenum?
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Digestive enzymes
Pancreatic Duct |
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What is the purpose of the gall bladder?
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Storage of bile formed by the liver
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What is the purpose of bile?
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Needed for the breakdown of fats
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Whar does the large intestine consist of?
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Caecem and colon
Rectum and anus |
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What is the Caecum?
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Short clind ended sac-very little use in carnivors
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