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Home Q & A Board Biology-Related Homework Help General Biology
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Arroyo21 Arroyo21
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6 years ago
In the 1920s, Otto Loewi discovered that
  a. a frog heart would beat outside the animal.
  b. the nerve to a frogs heart released a chemical
  that affected only that heart.
  c. neuron endings release a neurotransmitter when
  stimulated.
  d. a saline solution caused an isolated frog heart
  deprived of its own nerve supply to beat more
  slowly.
  e. ACh acts on skeletal muscle, smooth muscle, the
  heart, some glands, and the brain.

Question 2

An excitatory postsynaptic potential
  a. is only one of several types of graded potential.
  b. has a hyperpolarizing effect.
  c. will drive the membrane away from its potential.
  d. is summed with an inhibitory postsynaptic
  potential at the input zone of a neuron in a
  process known as synaptic integration.
  e. is none of these.
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ilovephysicsilovephysics
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6 years ago
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Arroyo21 Author
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#2
6 years ago
Upwards Arrow Correct again
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