BIOD 151 Module 3 exam Questions and Correct Answers, 100% Correct.
Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers.
Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion o...
biod 151 module 3 exam questions and correct answe
Written for
BIOD 151
BIOD 151
Seller
Follow
Topscorer1
Reviews received
Content preview
BIOD 151 Module 3 exam Questions and Correct Answers, 100% Correct.
Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers.
Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.
Explain in detail how the stomach contents enter the small intestine
The pyloric sphincter (valve), located at the base of the stomach, relaxes causing
a small quantity of chyme to pass through the opening into the first part of the
small intestine.
This initiates a reflex that causes the muscles of the sphincter to contract and
close the opening temporarily. Then the sphincter relaxes again and allows more
chyme to enter.
Be able to label the following:
Stomach
Gallbladder
Jejunum (not small intestine)
Appendix (not large intestine)
Rectum (not large intestine
A patient is experiencing vitamin toxicity. What type of vitamin would be causing this
toxicity? Explain your answer.
A. Water soluble vitamin
B. Fat soluble vitamin
C. All of the above
Fat soluble vitamins are stored within the body's fat stores making it harder for
the body to rid itself of them.
Explain which digestive system functions are carried out by the large intestine.
Absorption: In the large intestine water and electrolytes are reabsorbed and
vitamins are absorbed.
Defecation: Feces travel to the rectum where it is excreted via the anus.
Describe parietal cells and chief cells: name their location, secretions and purposes.
The parietal cells (located in the wall of the stomach body) secrete hydrochloric
acid, generating a pH of 1.3-3.5. This very acidic pH kills many of the bacteria
ingested along with food. In addition, the low pH stops the activity of salivary
amylase. The secretion of hydrochloric acid is essential in the activation of
pepsin.
Chief cells: secrete pepsinogen. Pepsinogen (a pre-enzyme) is secreted by the
chief cells in the stomach. Hydrochloric acid converts the inactive pepsinogen
(secreted by the chief cells) into the active enzyme pepsin which begins the
breakdown of proteins
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Topscorer1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.50. You're not tied to anything after your purchase.
