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Involute cylindrical gear transmission module M = 50 mm, pressure angle a = 20, transmission ratio i = 2.5, the number of pinion teeth is 20, the center distance of pinion indexing circle diameter gear circle
2、 According to the national standard, the number of teeth is selected
What is the optimum temperature for digestive enzymes?
The digestive enzyme of human body adapts to the normal temperature of 37.5 ℃
All kinds of digestive enzymes in human digestive system!
I am a junior one, some do not understand. The book is not clear. Give me a classification, what digestive glands secrete what digestive juice, what digestive enzymes are contained in all kinds of digestive juice. Good answer, I add points!
Salivary glands secrete amylase
The small intestine contains three kinds of digestive juice: bile (liver secretion), pancreatic juice (pancreas secretion) and intestinal juice (intestinal gland secretion)
Bile does not contain digestive enzymes, pancreatic juice contains trypsin, tryptase, pancreatic maltase, pancreatic fat and pancreatic amylase; intestinal juice contains intestinal protease, intestinal peptidase, intestinal amylase, intestinal maltase and intestinal lipase
This should be the first day of the book said!
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