OPTION H2.4-2.6FURTHER
PHYSIOLOGY
Devon Scholz
H2.4- Outline the control of digestive juice secretion by nerves and hormones, using the example of secretion of gastric juice.
Pre- Ingestion:
Post- Ingestion
Pre-Ingestion1. __________ _____ are produced to
hydrolyze the molecules in need of digestion.
2. _______ and ________ of ______cause gastric juice to be secreted in the ________.
Post Ingestion1. _________ is the stretching of the stomach
wall and causes ______ to send a signal to the brain.
2. This causes _______ to be produced and ______ sustains the amount of gastric juices in the Stomach.
H2.5- Outline the role of membrane-bound enzymes on the surface of epithelial cells in the small intestine in digestion.
Photo 50.44 Human ileum: mucosa composed of villi, crypts lined by simple columnar epithelium.
Example:
Membrane bound enzymes:1. What is one benefit of having a membrane
bound enzyme?
2. What is an example of a membrane-bound enzyme and where is it located?
Photo 50.47 Absorptive cells and microvilli in monkey small intestine. SEM.
H.2.6-Outline the reasons for cellulose not being digested in the alimentary canal.
http://www.as.miami.edu/chemistry/2086/chap%2024/chapter%2024-newpart2.htm
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