The Fact That the Ability to Control One's Head Develops

question 30

Short Answer

The fact that the ability to control one's head develops before the ability to control one's legs illustrates the _____ principle.

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Definitions:

Semipermeable Membrane

A barrier that allows certain molecules or ions to pass through it by diffusion while blocking others, often used in osmosis.

Sodium-Potassium Pump

A type of active transport mechanism that moves sodium ions out of and potassium ions into cells, essential for maintaining cell potential and volume.

Resting Potential

The voltage difference across the neuron's plasma membrane when it is not transmitting a signal, providing the neuron with the potential energy needed for activation.

Voltage Gradient

Difference in charge between two regions that allows a flow of current if the two regions are connected.