Islets of Langerhans & Glucagon

Beschreibung

Year 2 (Insulin & Glucagon) Quiz am Islets of Langerhans & Glucagon, erstellt von gina_evans0312 am 04/03/2014.
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Zusammenfassung der Ressource

Frage 1

Frage
Each islet contains 3000-5000 cells
Antworten
  • True
  • False

Frage 2

Frage
How are glucose levels monitored?
Antworten
  • High blood flow around cells
  • Insulin receptors on Beta cell surface
  • Flow of glucose in interstitial fluid

Frage 3

Frage
What is the role of the delta cells?
Antworten
  • Somatostatin production
  • Glycase production
  • Insulin production

Frage 4

Frage
The Islets of Langerhans are only stimulated by the SNS
Antworten
  • True
  • False

Frage 5

Frage
What is the role of glucagon?
Antworten
  • To signal 'hunger'
  • To signal 'satiation'
  • To signal high blood flow

Frage 6

Frage
First Pre-proglucagon is converted into Proglucagon
Antworten
  • True
  • False

Frage 7

Frage
In the small intestine, what is made from Proglucagon?
Antworten
  • Glp1 & 2
  • Major Preglucagon Fragment
  • Glucogen
  • Glycocentin

Frage 8

Frage
In the Alpha cells, what is made from Proglucagon?
Antworten
  • GRPP
  • Glucagon
  • Major Proglucagon Fragment
  • Glycocentin

Frage 9

Frage
What controls glucagon secretion?
Antworten
  • Nutrients
  • Gut peptides
  • Hormones
  • The nervous system

Frage 10

Frage
Glucose is a potent inhibitor of glucagon secretion
Antworten
  • True
  • False

Frage 11

Frage
Amino acids and free fatty acids in the blood _ secretion
Antworten
  • Stimulate
  • Inhibit

Frage 12

Frage
Why does glucagon have no effect on skeletal muscle?
Antworten
  • So the muscles don't get depleted of glucose
  • So the muscles cannot take glucose from the blood

Frage 13

Frage
Glucagon stimulates insulin release
Antworten
  • True
  • False

Frage 14

Frage
Which of the following is not a role of glucagon?
Antworten
  • Mobilisation of liver glucose
  • Breakdown of TAGs to F.As
  • Inc protein synthesis
  • Inc cardiac contractility

Frage 15

Frage
Why does glucagon leads to the P of pyruvate kinase?
Antworten
  • Reduce glycolysis & inc gluconeogenesis
  • Increase glycolysis & red gluconeogenesis

Frage 16

Frage
Stimulating pyruvate carboxylase stimulates glycolysis
Antworten
  • True
  • False

Frage 17

Frage
Which of the following is deactivated in order to prevent lipogenesis
Antworten
  • TAG lipase
  • Acetyl CoA carboxylase
  • Pyruvate Kinase
  • Phosphofructokinase

Frage 18

Frage
Phosphofructokinase 2 activates gluconeogenesis & inhibits glycolysis
Antworten
  • True
  • False
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