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5 Written questions

5 Matching questions

  1. EPSP (Exitatory post-synaptic potential)
  2. Synapse
  3. Sympathetic Division
  4. Nodes of Ranvier
  5. Refractory Period
  1. a An electrical change (depolarization) in the membrane of a post-synaptic cell caused by the binding of an excitatory neurotransmitter from a presynaptic cell to a post-synaptic cell; makes it more likely for a post-synaptic cell to generate an action potential.
  2. b Gap in the myelin sheath of certain axons where an action potential may be generated. In saltatory conduction, an action potential is regenerated at each node, appearing to "jump" along the axon from node to node
  3. c The junction where a neuron communicates with another neuron or other cell across a narrow gap via a neurotransmitter(chemical) or an electrical coupling.
  4. d The short time immediately after an action potential in which the neuron cannot respond to another stimulus, owing to the inactivation of voltage-gated sodium channels
  5. e One of the tree divisions of the autonomic nervous system; generally increases energy expenditure and prepares the body for action (Fight or Flight) - causes increase in heart rate, breathing, slows digestion, liver releases glucose, inhibits emptying of bladder, releases adrenaline from adrenal medulla situations:(emergency, embarrassment, exercise, excitement)

5 Multiple choice questions

  1. ...
  2. An electrical change (usually hyperpolarization) in the membrane of a post-synaptic neuron caused by the binding of an inhibitory neurotransmitter from a presynaptic cell to a post synaptic receptor; makes it more difficult for a post-synaptic neuron to generate an action potential
  3. A type of motor protein that associates into filaments that interact with actin filaments to cause cell contraction
  4. A substance that an organism cannot synthesize from any other material and therefore must absorb in preassembled.
  5. The potential that an excitable cell membrane must reach for an action potential to be initiated

5 True/False questions

  1. Sarcoplasmic ReticulumThe fundamental, repeating unit of striated muscle, delimited by the Z lines

          

  2. OrgansThe junction where a neuron communicates with another neuron or other cell across a narrow gap via a neurotransmitter(chemical) or an electrical coupling.

          

  3. TropomyosinThe regulatory protein that blocks the myosin-binding sites on actin molecules

          

  4. Central Nervous System (CNS)The sensory and motor neurons that connect to the central nervous system

          

  5. Nontropic HormonesA hormone that has an endocrine gland or cells as a target.