cell neuro si

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Across
  1. 3. table, negative membrane voltage of a neuron at rest, maintained by ion gradients and selective permeability
  2. 6. addition of multiple graded potentials that arrive at the same synapse in rapid succession, increasing their combined effect on membrane voltage
  3. 8. positive shift in membrane potential caused by ions (often Na⁺ or Ca²⁺) entering the cell, making the inside less negative.
Down
  1. 1. negative shift in membrane potential caused by positive charge leaving the cell (K⁺) or negative charge entering (Cl⁻).
  2. 2. ion channel that opens or closes in response to changes in membrane voltage, allowing rapid electrical signaling
  3. 4. voltage difference across a cell’s membrane created by unequal ion distributions and selective permeability.
  4. 5. rapid, all‑or‑none electrical signal produced by coordinated opening of voltage‑gated Na⁺ and K⁺ channels, allowing long‑distance neural communication.
  5. 7. addition of graded potentials generated at different synapses simultaneously, combining their effects at the axon hillock.