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SLS Bio 12 DS WW
| Question | Answer |
|---|---|
| Absorption | The process of absorbing or assimilating substances into cells or across the tissues and organs through diffusion or osmosis, as in absorption of nutrients by the digestive system, or absorption of drugs into the bloodstream. |
| Anaerobic Bacteria | Bacteria that are capable of living in the absence of molecular oxygen. |
| Anus | The opening at the lower end of the alimentary canal through which solid waste is eliminated from the body. |
| Appendix | a worm-shaped process projecting from the blind end of the caecum |
| Bile | a greenish-yellow fluid secreted by the liver and stored in the gallbladder |
| Capillary | the smallest vessels which contain oxygenated blood; are responsible for delivering oxygen to the tissues on a cellular level. |
| Cardiac Sphincter | the valve between the distal end of the esophagus and the stomach |
| Chemical Digestion | The process of decomposing organic matter through microbial activity |
| Digestive Enzyme | enzymes that are utilised in the digestive system |
| Digestive Tract | Passageway of food that begins at the mouth down to the throat, esophagus, stomach, intestines, and finally to the anus |
| Duodenum | The first or proximal portion of the small intestine, extending from the pylorus to the jejunum |
| Emulsification | to convert or to be converted into an emulsion |
| Epiglottis | a cartilaginous appendage which closes the glottis while food or drink is passing while food or drink is passing through the |
| Esophagus | That part of the alimentary canal between the pharynx and the stomach |
| Gall Bladder | a digestive organ which stores bile (produced in the liver), used in the digestion and absorption of fats in the duodenum. A muscular sac attached to the liver that secretes bile and stores it until needed for digestion. |
| Gastric Juices | The acidic digestive fluid secreted by various glands in the stomach lining into the lumen of the stomach |
| HCl | is present as the acid component of gastric juice |
| Insulin | Secreted by the cells of the pancreas in response to high blood sugar levels |
| Intestinal Juices | The acidic digestive fluid secreted by various glands in the stomach lining into the lumen of the stomach |
| Lacteals | One of the lymphatic vessels which convey chyle from the small intestine through the mesenteric glands to the thoracic duct |
| Large Intestine (Colon) | this structure has 6 major divisions: caecum, ascending colon, transverse colon, descending colon, sigmoid colon and rectum |
| Lipase | digestive enzymes in pancreas that changes fats to glycerol and fatty acids |
| Liver | a solid organ located in the right upper quadrant of the abdomen |
| Maltase | digestive enzyme in small intestine that changes disaccharides to monosaccharides |
| Microvilli | Any of the minute hairlike structures projecting from the exposed surface of the cell in order to increase the surface area for absorption |
| Nuclease | An enzyme capable of cleaving the phosphodiester bonds between nucleotide subunits of nucleic acids. |
| Pancreas | A tongue-shaped glandular organ lying below and behind the stomach. |
| Pancreatic Amylase | digestive enzyme in pancreas that changes starch to maltose |
| Pancreatic Juices | A fluid secreted into the duodenum by the pancreas; important for breaking down starches and proteins and fats |
| Pepsin | digestive enzyme in stomach that changes protein to polypeptides |
| Pepsinogen | An inactive enzyme released by the parietal cells in the gastric pits of stomach |
| Peptidase | Alternative name for a protease. Any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids |
| Peristalsis | The process of wave-like muscle contractions of the alimentary tract that moves food along |
| pH | a measure of the hydorgen ion concentration of a solution |
| Pharynx | The cavity at the back of the mouth; opens into the esophagus at the lower end. The passage to the stomach and lungs |
| Physical Digestion | The catabolic process in the digestive tract where ingested food is converted into simpler, soluble and diffusible substances that can be assimilated by the body |
| Protease | A proteinase which is any enzyme that catalyses the splitting of interior peptide bonds in a protein. Any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids |
| Pyloric Sphincter | A thickening of the circular layer of the gastric musculature encircling the gastroduodenal junction |
| Rectum | the last portion of the large intestine (colon) that communicates with the sigmoid colon above and the anus below |
| Salivary Amylase | digestive enzyme in salivary glands that changes starch to maltose |
| Salivary Glands | The salivary glands include the parotid, submandibular and sublingual glands. They produce enzymes that aid in the breakdown of starches. |
| Salivary Juices/Salvia | The watery mixture of secretions from the salivary and oral mucous glands that lubricates chewed food, moistens the oral walls, and contains ptyalin. |
| Small Intestine | The small intestine is composed of three sections: duodenum, jejunum and ileum |
| Sodium Bicarbonate | neutralizes the acidic material from the stomach |
| Stomach | The most dilated portion of the digestive tube, situated between the oesophagus and the beginning of the small intestine (duodenum) |
| Swallowing | To take into the stomach; to receive through the gullet, or oesophagus, into the stomach; as, to swallow food or drink |
| Trypsin | digestive enzyme in pancreas that changes polypeptides to smaller polypeptides |
| Villus | The villi work in partnership with the small intestine to dispatch nutrients to the bloodstream |