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