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36 Cards in this Set
- Front
- Back
Functions of digestive system |
- Physical and chemical breakdowns of food. - absorption of nutrients. - expulsion of waste materials. |
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Food contains... |
Carbohydrates, proteins, fats, water, minerals, vitamins, "other" |
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Protein made from.. |
Amino acids |
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Carbohydrates made from.. |
Simple sugars (e.g. glucose) |
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Fats made from... |
Triglycerides made from chains of fatty acids and glycerol |
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Enzymes |
Act as biological catalysts. Increase rate of chemical reactions |
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Ingestion |
Taking food in by mouth |
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Digestion |
The breakdown of complex nutrients so they can be absorbed into blood |
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Absorption |
Movement of digested food from digestive system into the blood |
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Metabolism |
Chemical reactions in the body required for life |
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Egestion |
Removal of waste production of digestion via anus |
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Ruminant |
Has 4 chambered ruminant stomach (cow). Oesophagus, reticulum, rumen, omasum, abomasum, small intestine, caecum, colon. Energy from volatile fatty acids. |
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Non ruminant herbivore |
Enlarged caecum and colon for digestion of cellose (horse) |
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Prehension, mastication, deglutition, eructation |
Grasping with lips. Chewing. Swallowing. Burping. |
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Purpose of cardiac sphincter |
Controls movement of food between oesophagus and stomach |
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Describe the mucosa in the reticulum |
Papillae form honeycomb pattern |
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Describe the mucosa in the omasum |
Papillae covered folds project into the limen like "pages of a book" |
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Describe the mucosa in the ruman |
Shag carpet |
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Role of pancreas |
Produce enzymes to break down long macromolecule chains into shorter length. Under the liver. |
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Numerous bean shaped areas of lymphatic tissue? |
Lymph nodes |
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Hepatocytes |
Liver cells |
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Function of HCI |
Hydrochloric acid - denatures (unfolds) proteins. Only secreted when food in stomach. Mucous secreted to protect stomach |
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Enzymes produced by pancreas for starch, protein, and fat |
Starch - amylase Protein - pepsin, trypsin, peptidases Fat - lipase |
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Pyloric sphincter |
Muscle that controls food leaving stomach |
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Mesentery |
Clear membrane that holds intestines in place with blood vessels running though (rat) |
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Where is food regurgitated from in ruminant? |
Rumen |
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Order food passes through ruminant stomach |
Reticulum, rumen, omasum, abomasum |
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Bile |
Is produced by liver and stored in gall bladder. Essential for fat breakdown |
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Which is longer, ileum or jejunum? |
Jejunum |
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"True stomach" |
Abomasum |
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Peristalsis |
Muscles of digestive tract squeeze in waves to push food along |
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Gastrin |
Hormone which stimulates acid production |
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Gastric glands produce.. |
Some enzymes for digestion, HCI, mucous, hormones |
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Anatomy of small intestine |
Stomach (pyloric sphincter), duodenum, jejunum, ileum (ileocaccal valve), large intestine |
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Liver |
Production of bile, process nutrients, storage of fat soluble vitamins, detoxification of drugs and breakdowns of hormones |
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Large intestine |
Caecum, colon, rectum. |