1.) explain how three different types of ion gated channels are involved in neur
ID: 57118 • Letter: 1
Question
1.) explain how three different types of ion gated channels are involved in neurotransmitter signaling2.) what are four ways in which phospholipids are motile
3.) in what way can the lateral movement of a membrane protein be restricted
4.) which ion has the highest intracelluar concentration
5.) what are the difference between transporters, pumps and channels
1.) explain how three different types of ion gated channels are involved in neurotransmitter signaling
2.) what are four ways in which phospholipids are motile
3.) in what way can the lateral movement of a membrane protein be restricted
4.) which ion has the highest intracelluar concentration
5.) what are the difference between transporters, pumps and channels
1.) explain how three different types of ion gated channels are involved in neurotransmitter signaling
2.) what are four ways in which phospholipids are motile
3.) in what way can the lateral movement of a membrane protein be restricted
4.) which ion has the highest intracelluar concentration
5.) what are the difference between transporters, pumps and channels
Explanation / Answer
1.
The three different types of ion gated channels that are involved in neurotransmitter signaling are as follows:
Sodium-gated channel: The binding of acetylcholine causes pore size to widen. This causes sodium ions to flow down their electrochemical gradient into the cell. The inward movement of positive ions into cell depolarizes the post-synaptic membrane and causes action potential.
Potassium-gated channel: These channels are activated at depolarized state. In depolarized state, the potassium ions move out of the cell. Potassium ions play an important role in returning the depolarized cell back to the resting state.
Calcium-gated channel: These channels are activated at depolarized state and remain closed during resting state. At this stage the calcium ions rush into the cell. Thus, results in excitation of neurons and release of neurotransmitters.
4.
The highest intracellular concentrated ion is calcium. It is involved in several functions like bone development, contraction and relaxation of muscles, transmission of nerve impulses, activation of enzyme reactions, stimulation of hormone secretion, and integrity of intracellular cement substances.
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