Detailed Notes on Neural Cell Structure and Function

Structure and Cells

• Key cells involved:
  • Schwann cells
  • Oligodendrocytes

Charge and Potential

• Typically, entities have either a negative or positive charge.
• Potential change leads to potential energy.

Excitable Cells

• Highly excitable cells are designed for information transmission.
• Their role includes perceiving signals and converting them. They manage the potassium and sodium exchange.

Impact of Release

• Release causes an impact inside the cell, leading to change.
• Resting membrane potential: -70 (negative seventy).
• In a neuron's resting state, movement of particles from outside to inside or inside to outside the cell dictates the changes.

Gated Channels

• Movement through channels is gated, not a free-for-all.
• Requires energy and binding to a receptor.
• Gated channels open under specific conditions; it has to be binding to the receptor and reach threshold.

Factors for Change

• Three factors are responsible for any type of change.
• Local changes induce more potential locally.

Local Change

• The cell initiates change.
• Gates open, sodium enters, resulting in a local change.