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Most of the water and K+ passed from the insect’s Malphigian tubules into the
A. Rectum
B. Midgut
C. Intestine
D. Foregut
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- Which of the following statements is true about the digestive system of simple invertebrates like sponges and sea anemone? * No answer One opening only used as anus One opening only used as a mouth One opening for mouth and another opening for the anus One opening which is used as a mouth and anusIn the stomach:a. muscles churn and mix the food with acids and enzymesb. glands make 3 quarts of digestive juices each dayc. food leaves as a thick liquid called chymed. all of the aboveSelect ALL statements about digestive systems that are true: A. carnivores have longer digestive tracts than herbivores B. gizzards grind food with little rocks C. the front part of our mouths where we chew food is called the pharynx D. An alimentary canal is the same thing as a gastrointestinal tract E. The gastro-intestinal lumen is anaerobic.
- Which of the following stimuli activates sensors in thewalls of digestive organs?a. breakdown products of digestionb. distensionc. pH of chymed. all of the aboveWhich of the following is FALSE? A. Bile is a fat molecule-busting enzyme B. Vitamins are organic compounds. C. Most plants have a different composition of amino acids compared to animals. D. Water reabsorption is one of the main functions of the large intestines.DRAW IT Create a flowchart to summarize the events thatoccur after partially digested food leaves the stomach. Use thefollowing terms: bicarbonate secretion, circulation, decrease inacidity, increase in acidity, secretin secretion, signal detection.Next to each term, indicate the compartment(s) involved. Youmay use terms more than once.
- Explain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.In which of the following animals, single opening is used for both ingestion and egestion while removal of metabolic waste products is through body wall? a.Hydra and Obelia b.Taenia and Fasciola c.Nereis and Hirudinaria d.Limulus and LocustaCompare the following animals in terms of their digestive tracts (centerpoint only needed in the graph (similarities))
- All of the following are layers of the vertebrate gastrointestinal tract excepta. the peristalsis.b. the submucosa.c. the mucosa.d. the muscularisExcessive vomiting can to lead to alkalosis, as the gastric glands get more active to replace the gastric juice lost from the stomach lumen. Select ALL of the following that will occur to compensate for this alkalosis (ie, to keep pH stable): a). breathing rate goes down b). kidneys make less HCO3- for blood c). kidneys secrete less H+ d). hyperventilationWhere does the majority of chemical digestion in thestomach occur?a. fundus and bodyb. cardia and fundusc. body and pylorusd. body
