PHSI191

1.All neural and nerve controlled processes

• 2.Movement of blood around the body.
• 3.
• 4.
• 5.

sodium has a positive electrice pathway but will not move because the membrane is not permeable which means we have a high resistance

agents that block electrical or chemical signaling by nerves (generally by increasing resistance to flow of specific ions) will interfere with transmission of information in the nervous system.

-A drug prevents the flow of ions through a specific channel

naturally-occuring substance that interfere with electrical signaling in nerves and muscles.

• -incease resistance to flow of ions across the cell membrane
• e.g. tetrodotoxin-puffer fish poison