Bio 33: FINAL EXAM - The Digestive System Actual Question With Correct Detailed Answers Guaranteed Pass.
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Course
DIGESTION
Institution
DIGESTION
Homeostatic function of the digestive system? - correct answer - Maintains natural balances within the body
- Acquire materials and energy
Organs of the digestive system
-What histology characterizes them
-What are their anatomical features (especially ...
Homeostatic function of the digestive system? - correct answer - Maintains natural
balances within the body
- Acquire materials and energy
Organs of the digestive system
-What histology characterizes them
-What are their anatomical features (especially unique ones)
-What is the function of each one in digestion
*Know them in order along the GI tract and know what structures separate them. In the case of the
small intestine, know why (function and anatomy) it is separated into three sections. - correct answer
1. Mouth (oral cavity, teeth, tongue): mechanical processing, moistening, mixing w/ salivary secretions
2. Pharynx: muscular propulsion of materials into the esophagus
3. Esophagus: transport of materials to the stomach
4. Stomach: chemical breakdown of materials via acid and enzymes; mechanical processing through
muscular contractions
5. Small intestine: enzymatic digestion and absorption of water, organic substrates, vitamins, and ions
6. Large intestine: dehydration and compaction of indigestible materials in preparation for elimination
-Nutrient molecules are absorbed into blood or lymph
6. Elimination
-Undigested, unabsorbed waste
What is peristalsis and what tissues/layers are responsible for it? - correct answer
Moves bolus through the GI tract
Smooth muscle in front of bolus relaxes, behind contracts (longitudinal)
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