Examlex
What region of the eye has the largest concentration of cones?
Cell Membrane
A biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.
All-or-None Law
A principle stating that certain physiological responses will occur to their fullest extent once a stimulus reaches a threshold, without gradation in response.
Action Potential
A sudden and temporary electrical charge that sweeps through a neuron, allowing it to transmit a signal along the nerve pathway.
Neuron Fires
The process by which a neuron sends an electrical signal down its axon, transmitting information to other neurons, muscles, or glands.
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