Sodium channels in membrane can open in response to what?

In some circumstances, as during a nerve impulse, sodium ions must enter the cell. How are they able to do so?

why do sodium ions need channels in order to move into and out of cells?

Gap junctions between cardiac muscle cells and gap junctions between uterine smooth muscle cells form connections that provide for rapid communication. What is this phenomenon called?

what kind of channels are involved in establishinh rmp

Which of the following happens if the concentration of potassium in the extracellular fluid increases too much?A) Potassium would be taken up by the oligodendrocytes, so no net change in signaaaling would result. B) No signaling could occur. C) The Neuron would become hyperexcitable D) The sodium pumps would immediately fix the situation, so no net change in signaling would result.

Fill in the blanks: ___________ gated ion channels can open in response to mechanical stimulation, ___________-gated ion channels open in response to certain chemical bindings, and ___________-gated ion channels open in response to a change in membrane potential

Explain Extracellular signals can be delivered by diffusion or by cell-to-cell contact.