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L33 Pancreatic islets, insulin, glucagon, and diabetes

Mer Scott 19 questions 5.0 (1 rating) Updated 6 Apr 2018

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Questions in this quiz (19)

  1. 1Which statement best describes the location of the pancreas?
    1. AThe pancreas sits under the larynx on the anterior of the trachea.
    2. BThe pancreas sits in the abdominal cavity.
    3. CThe pancreas sits in the C-shaped curve of the duodenum, with it's body extending behind the stomach.
  2. 2The pancreas is:
    1. Aan exocrine gland
    2. Ban endocrine gland
    3. Cboth an exocrine and endocrine gland.
  3. 3The majority of the pancreas secretes digestive enzymes.
    1. ATrue
    2. BFalse
  4. 4(Choose all correct options.)
    Pancreatic islets:
    1. Amake up 2% of the pancreas' mass
    2. Bhave 4 types of cells
    3. Chave alpha cells which secrete insulin
    4. Dhave beta cells which secrete glucagon
    5. Eare up to 1 million in number within the pancreas
  5. 5The reference range for blood glucose is between:
    1. A3.5 - 8 mmol/L
    2. B3.5 - 6 mmol/L
    3. C4 - 6 mmol/L
    4. D5 - 10 mmol/L
  6. 6Glucose is the only fuel the brain can use.
    1. ATrue
    2. BFalse
  7. 7During the day, fuel use ([blank_start]metabolism[blank_end]) is [blank_start]continuous[blank_end], but we only eat periodically. Hence, our blood glucose level [blank_start]changes[blank_end] throughout the day. We describe the two metabolic [blank_start]states[blank_end] the body moves between as the fed state and the fasting state.
    In the fed state there is [blank_start]uptake[blank_end] of nutrients and [blank_start]anabolic[blank_end] metabolism taking place([blank_start]synthesis[blank_end] of glycogen, protein and fat).
    Vice versa, in the fasting state there is [blank_start]mobilisation[blank_end] of nutrients and [blank_start]catabolic[blank_end] metabolism taking place([blank_start]breakdown[blank_end] of glycogen, protein and fat.)
    1. Ametabolism
    2. Bcontinuous
    3. Cchanges
    4. Dstates
    5. Euptake
    6. Fanabolic
    7. Gsynthesis
    8. Hmobilisation
    9. Icatabolic
    10. Jbreakdown
  8. 8Choose the correct statements about insulin secretion.
    1. AInsulin is secreted by beta cells when blood glucose concentration increases above the reference range.
    2. BInsulin release can be a negative-feedback pathway or a feed-forward pathway.
    3. CCarbohydrates being broken down into glucose during digestion triggers insulin release.
    4. DTarget cells include everything but muscle and adipose tissue.
    5. EThe beta cells are the sensor and integrator of the system.
    6. FInsulin is a lipid-soluble hormone with an intracellular receptor.
  9. 9Which of these is not a symptom of Type I Diabetes?
    1. AHypoglycemia
    2. BPolyuria
    3. CPolydipsia
    4. DPolyphagia
  10. 10Insulin is the only hormone that can decrease blood glucose levels.
    1. ATrue
    2. BFalse

Information

Description
• Describe the structure and location of the pancreatic islets. • Outline the sequence of events that occurs when blood glucose concentration increases above or decreases below the reference range • Describe the effects of insulin on each type of target cell. • Compare the role of insulin and glucagon in the control of blood glucose concentration in the fed state and the fasting state. • Explain what diabetes mellitus is and distinguish between type 1 diabetes and type 2 diabetes.
Author
Mer Scott
Language
English
Views
58
History
Created on 15 May 2017 · updated on 6 Apr 2018
Rating
5.0 out of 5 · 1 rating
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