Ligand-gated Ion Channel

Channel where they open when a ligand binds to the allosteric site.

Voltage-gated Ion Channel

Channel that opens or closes in response to changes in the cell membrane's electrical potential.

Stretch-activated Ion Channel

Also known as mechanosensitive channels. They open in response to the deformation of the cell membrane using mechanical stress.

Negative feedback loop

Regulatory mechanism that counteracts a change to maintain a stable internal environment.

Positive feedback loop

Process where an initial change is then amplified, leading to more change in the same direction.

Cell-surface receptors

Proteins found on the cell membrane that allow a cell to receive signals from its external environment.

Intracellular receptors

Proteins located inside the cell that bind to signaling molecules, like steroid hormones, that are able to cross the cell membrane.

Rapid temporary electrical impulse that travels along a neuron's axon to transmit signals.

The critical level of membrane depolarization that must be reached for an action potential to be triggered in a neuron.

"All-or-nothing" Principle

A nerve or muscle fiber either responds completely to a stimulus or not at all depending if the threshold potential has been exceeded.

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Jairo Jimenez

SCI221-08 Study Stack 1

Term	Definition
Ligand-gated Ion Channel	Channel where they open when a ligand binds to the allosteric site.
Voltage-gated Ion Channel	Channel that opens or closes in response to changes in the cell membrane's electrical potential.
Stretch-activated Ion Channel	Also known as mechanosensitive channels. They open in response to the deformation of the cell membrane using mechanical stress.
Negative feedback loop	Regulatory mechanism that counteracts a change to maintain a stable internal environment.
Positive feedback loop	Process where an initial change is then amplified, leading to more change in the same direction.
Cell-surface receptors	Proteins found on the cell membrane that allow a cell to receive signals from its external environment.
Intracellular receptors	Proteins located inside the cell that bind to signaling molecules, like steroid hormones, that are able to cross the cell membrane.
Action Potential	Rapid temporary electrical impulse that travels along a neuron's axon to transmit signals.
Threshold Potential	The critical level of membrane depolarization that must be reached for an action potential to be triggered in a neuron.
"All-or-nothing" Principle	A nerve or muscle fiber either responds completely to a stimulus or not at all depending if the threshold potential has been exceeded.

Created by: user-1991670

"Know" box contains:
Time elapsed:
Retries: