A&P (one)

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1. After the peak of the action potential, membrane potential is returned towards its resting potential by

  • An increase in potassium permeability.
  • An increase in sodium permeability.
  • All of the above.
  • An increase in sodium permeability.
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2. Nodes of Ranvier are;

  • extensions to cell dendrites
  • gaps in a myelin sheath
  • supporting cells within the peripheral nervous system
  • vesicles released at the cell synapse

3. Which of the following statements about the sympathetic nervous system is untrue?

  • causes adrenalin release from the adrenal glands
  • it is sometimes described as the 'Rest and Digest' division of the autonomic nervous system
  • the pre-ganglionic fibres are relatively short
  • it is sometimes described as the Thoraco-lumbar division of the autonomic nervous system

4. Which of the following is NOT a part of the small intestine?

  • Caecum
  • Duodenum
  • Ileum
  • Jejunum

5. Which of the following STIMULATES gastric acid production?

  • Taking a Proton Pump Inhibitors (PPI) e.g. Omeprazole
  • Drinking a glass of milk
  • Taking a Histamine (H2) receptor blocker e.g. Cimetidine, Ranitidine
  • Cutting the Vagus nerve branch which serves the stomach.
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