Transcript disgestion2

Announcements for 5 December
• Exam Information
– GI questions to be posted
– Monday exam sign-up by
email by 5 pm today
– Old Tests Review
• Tuesday 7-9
• Milliken Pit
• No note-taking allowed…
just look over Tests 1-3.
– Exam Study Guide
• Check website
• Abstracts
– Due Friday Dec 12 at 9 am
• Turn in early if possible
• Turn in revision stapled to 1st
draft, SPSS printout, and first
grading rubric sheet.
– Consult with Davis
• Anytime during exam week
• Faculty Candidates
– Feedback to professors
– Last talk 5 pm today
Table 15.4
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Figure 15.3
Figure 15.3
Figure 15.4
Table 15.2
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Table 15.2
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Figure 15.5
Figure 15.6
These 4 layers are specialized along the gut tube.
Figure 15.7
Small intestine has
huge surface area (villi
and microvilli) for
absorption.
Epithelial cells have
transporter proteins in
apical and balateral
membranes for
absorption of simple
sugars and amino acids.
Fats digestion and
absorption is my a
different mechanism
and involve lymphatic
capillaries called
lacteals within the villi.
Figure 15.9
Amphipathic
molecules,
derivatives of
cholesterol
Figure 15.10
Figure 15.11
Monoglycerides are
absorbed directly
througt intestinal
epithelial cell apical
membranes (no
channels involved.)
Micelles are
combinations of
monoglycerides, fatty
acids, and bile salts.
Figure 15.12
Chylomicra are
synthesized in
intestinal epithelial
cells and secreted .
Then enter lacteals.
Figure 15.13
Figure 15.16
Figure 15.17
Figure 15.18
Proton pump of Parietal cells can be
blocked with drugs which suppress acid
secretion.
Figure 15.21
Chief cells secrete pepsinogen
which is activated to pepsin by HCl
in the lumen of the stomach.
Figure 15.24
Table 15.6
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Figure 15.26
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Figure 15.27
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Figure 15.28
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Figure 15.31
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