Islets of Langerhans & Glucagon

Descrição

Year 2 (Insulin & Glucagon) Quiz sobre Islets of Langerhans & Glucagon, criado por gina_evans0312 em 04-03-2014.
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Quiz por gina_evans0312, atualizado more than 1 year ago
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Criado por gina_evans0312 mais de 10 anos atrás
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Resumo de Recurso

Questão 1

Questão
Each islet contains 3000-5000 cells
Responda
  • True
  • False

Questão 2

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

Questão 3

Questão
What is the role of the delta cells?
Responda
  • Somatostatin production
  • Glycase production
  • Insulin production

Questão 4

Questão
The Islets of Langerhans are only stimulated by the SNS
Responda
  • True
  • False

Questão 5

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

Questão 6

Questão
First Pre-proglucagon is converted into Proglucagon
Responda
  • True
  • False

Questão 7

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

Questão 8

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

Questão 9

Questão
What controls glucagon secretion?
Responda
  • Nutrients
  • Gut peptides
  • Hormones
  • The nervous system

Questão 10

Questão
Glucose is a potent inhibitor of glucagon secretion
Responda
  • True
  • False

Questão 11

Questão
Amino acids and free fatty acids in the blood _ secretion
Responda
  • Stimulate
  • Inhibit

Questão 12

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

Questão 13

Questão
Glucagon stimulates insulin release
Responda
  • True
  • False

Questão 14

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

Questão 15

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

Questão 16

Questão
Stimulating pyruvate carboxylase stimulates glycolysis
Responda
  • True
  • False

Questão 17

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

Questão 18

Questão
Phosphofructokinase 2 activates gluconeogenesis & inhibits glycolysis
Responda
  • True
  • False

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