Normal physiology

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Across
  1. 3. A chemical substance that transmits signals across a synapse between neurons.
  2. 5. A decrease in membrane potential making a neuron more likely to fire an action potential.
  3. 6. The widening of blood vessels due to relaxation of smooth muscle in vessel walls.
  4. 7. A rapid rise and fall in membrane potential that propagates along a neuron.
  5. 8. An iron-containing protein in red blood cells that binds and transports oxygen.
  6. 9. The process of maintaining internal body temperature within optimal limits.
Down
  1. 1. The control of water and solute concentrations in the body.
  2. 2. The metabolic pathway that generates glucose from non-carbohydrate substrates.
  3. 4. An organelle involved in protein and lipid synthesis (smooth and rough types).
  4. 8. The process by which the body maintains a stable internal environment despite external changes.