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What happens when binding acetylcholine to the chemically gated ion channels on the plasma membrane of the muscle fiber?
When acetylcholine binds to the chemically gated ion channels on the plasma membrane of the muscle fiber, it causes these channels to open, allowing sodium ions to flow into the cell. This influx of sodium ions depolarizes the muscle fiber membrane, generating an action potential. The action potential then triggers the release of calcium ions from the sarcoplasmic reticulum, ultimately leading to muscle contraction.
What is the difference between a plasma membrane and a Cell?
A plasma membrane is a structure that surrounds the cell and separates it from its environment, controlling the movement of substances in and out of the cell. A cell is the basic structural and functional unit of life, consisting of various organelles surrounded by the plasma membrane. Thus, a cell encompasses the plasma membrane within its boundaries.
How does the plasma membrane at the trigger zone differ from that on the soma?
The plasma membrane at the trigger zone of a neuron typically contains a higher density of voltage-gated ion channels, which are responsible for initiating action potentials. This allows for rapid signal transmission along the axon. In contrast, the plasma membrane on the soma (cell body) is involved in integrating signals from various sources before they are transmitted down the axon.
What is the organelle that regulates what enters or exits the cell is called?
its the cell membrane - not to be confused with the cell wall
What part of the plasma membrane regulates what enters and leaves the cell?
The phospholipid bilayer of the plasma membrane, specifically the integral membrane proteins like transport proteins and ion channels, regulate what enters and leaves the cell by controlling the movement of molecules across the membrane.
What happens when binding acetylcholine to the chemically gated ion channels on the plasma membrane of the muscle fiber?
When acetylcholine binds to the chemically gated ion channels on the plasma membrane of the muscle fiber, it causes these channels to open, allowing sodium ions to flow into the cell. This influx of sodium ions depolarizes the muscle fiber membrane, generating an action potential. The action potential then triggers the release of calcium ions from the sarcoplasmic reticulum, ultimately leading to muscle contraction.
How plasma membrane diffuse across plasma membrane?
Ions can't diffuse across membranes, they must used channels to transport across
What is the difference between a plasma membrane and a Cell?
A plasma membrane is a structure that surrounds the cell and separates it from its environment, controlling the movement of substances in and out of the cell. A cell is the basic structural and functional unit of life, consisting of various organelles surrounded by the plasma membrane. Thus, a cell encompasses the plasma membrane within its boundaries.
How does the plasma membrane at the trigger zone differ from that on the soma?
The plasma membrane at the trigger zone of a neuron typically contains a higher density of voltage-gated ion channels, which are responsible for initiating action potentials. This allows for rapid signal transmission along the axon. In contrast, the plasma membrane on the soma (cell body) is involved in integrating signals from various sources before they are transmitted down the axon.
What is the organelle that regulates what enters or exits the cell is called?
its the cell membrane - not to be confused with the cell wall
What part of the plasma membrane regulates what enters and leaves the cell?
The phospholipid bilayer of the plasma membrane, specifically the integral membrane proteins like transport proteins and ion channels, regulate what enters and leaves the cell by controlling the movement of molecules across the membrane.
What type of channel does sodium and potassium use to diffuse across the plasma membrane of all cells?
Sodium and potassium diffuse across the plasma membrane of cells through ion channels called voltage-gated channels. These channels open and close in response to changes in membrane potential, allowing sodium and potassium ions to flow down their electrochemical gradients.
Which cell part is a thin membrane that lets materials in and out of a cell?
Referred to as either a cell membrane or a plasma membrane. Is composed of a phospholipid bilayer with embedded protein channels.
The plasma exhibits what permeability?
It exhibits semipermeability.
Which technique would be helpful if you wanted to study details of channels through the plasma membrane of a cell?
Freeze fracture
How does nutrients enter a cell?
The plasma membrane.
Another name for plasma membrane?
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
