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Excitatory

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Excitatory neurotransmitter.

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Q: If a neurotransmitter depolarizes the postsynaptic membrane it is referred to as?
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What is the difference between an excitatory synapse and an inhibitory synapse?

Synapses are junctions that allow a neuron to electrically or chemically transmit a signal to another cell. Synapses can either be excitatory or inhibitory. Inhibitory synapses decrease the likelihood of the firing action potential of a cell while excitatory synapses increase its likelihood. Excitatory synapses cause a positive action potential in neurons and cells. For example, in the neurotransmitter Acetylcholine (Ach), its binding to receptors opens up sodium channels and allows an influx of Na+ ions and reduces membrane potential which is referred to as Excitatory Postsynaptic potential(EPSP). An action potential is generated when the polarization of the postsynaptic membrane reaches threshold. ACh acts on nicotinic receptors which can be found at the neuromuscular junction of skeletal muscles, the parasympathetic nervous system, and the brain. It also acts on muscarinic receptors found at neuromuscular junctions of the smooth muscles, glands, and the sympathetic nervous system. Inhibitory synapses, on the other hand, cause the neurotransmitters in the postsynaptic membrane to depolarize. An example is the neurotransmitter Gamma Aminobutyric Acid (GABA). The binding of GABA to receptors increases the flow of chloride (CI-) ions in the postsynaptic cells raising its membrane potential and inhibiting it. The binding of GABA to receptors activates a second messenger opening potassium channels.


What is a synapse?

There are several types of synapses in the body. The most commonly discussed type is the chemical synapse, but other types of synapses include electrical synapses and immunological synapses. Because chemical synapses are the most commonly discussed synapses in general, that's probably what this question is referring to.A chemical synapse is a small gap, or commonly referred to as a connection, between two cells that allows for the first cell (the presynaptic cell) to communicate with the second cell (the postsynaptic cell) through a chemical signal. These chemical signals are called neurotransmitters, and once they are released by the presynaptic cell, they act on the postsynaptic cell through specialized protein molecules called neurotransmitter receptors.The actions triggered by a neurotransmitter binding its receptor on the postsynaptic cell are highly varied. They vary according to the type, quantity, and frequency of neurotransmitter release, the specific receptor involved, the type of cell that is receiving the neurotransmitter signal, among other things. For example, a neurotransmitter called glutamate typically causes activation of the postsynaptic cell, while a neurotransmitter called GABA typically inhibits postsynaptic cells. Likewise, if the postsynaptic cell belongs to a gland, then activity in that cell may promote secretion, while inhibition may hinder secretion. If the postsynaptic cell is a muscle fiber, then activation triggers muscle contraction, while inhibition causes relaxation.A synapse is a connection which allows for the transmission of nerve impulses. Synapses can be found at the points where nerve cells meet other nerve cells, and where nerve cells interface with glandular and muscular cells. In all cases, this connection allows for the one-way movement of data. The human body contains trillions of synapses, and at any given time, huge numbers of these connections are active.


What is the membrane referred to as the fluid mosaic?

cell membrane


What is the chemical referred to in diagram?

The chemical referred to in the diagram is serotonin. It is a neurotransmitter that helps regulate mood, appetite, and sleep. Its chemical structure is characterized by a double-ring molecular formula.


How does a synapse work?

There are several types of synapses in the body. The most commonly discussed type is the chemical synapse, but other types of synapses include electrical synapses and immunological synapses. Because chemical synapses are the most commonly discussed synapses in general, that's probably what this question is referring to.A chemical synapse is a small gap, or commonly referred to as a connection, between two cells that allows for the first cell (the presynaptic cell) to communicate with the second cell (the postsynaptic cell) through a chemical signal. These chemical signals are called neurotransmitters, and once they are released by the presynaptic cell, they act on the postsynaptic cell through specialized protein molecules called neurotransmitter receptors.The actions triggered by a neurotransmitter binding its receptor on the postsynaptic cell are highly varied. They vary according to the type, quantity, and frequency of neurotransmitter release, the specific receptor involved, the type of cell that is receiving the neurotransmitter signal, among other things. For example, a neurotransmitter called glutamate typically causes activation of the postsynaptic cell, while a neurotransmitter called GABA typically inhibits postsynaptic cells. Likewise, if the postsynaptic cell belongs to a gland, then activity in that cell may promote secretion, while inhibition may hinder secretion. If the postsynaptic cell is a muscle fiber, then activation triggers muscle contraction, while inhibition causes relaxation.A synapse is a connection which allows for the transmission of nerve impulses. Synapses can be found at the points where nerve cells meet other nerve cells, and where nerve cells interface with glandular and muscular cells. In all cases, this connection allows for the one-way movement of data. The human body contains trillions of synapses, and at any given time, huge numbers of these connections are active.


What is another name for phospholpids blayer?

The phospholipid bilayer is also referred to as the cell membrane or plasma membrane.


What type of membrane is membrane plasma?

The plasma membrane is a phospholipid bilayer membrane that surrounds the cell, serving as a protective barrier. It is selectively permeable, allowing certain molecules to enter and exit the cell. The plasma membrane also contains proteins that help with cell communication and transport.


The neurotransmitter most frequently associated with the Reward pathway of the brain is?

Dopamine. It is often referred to as the "feel-good" neurotransmitter and plays a key role in the brain's reward system, influencing feelings of pleasure and motivation.


What is local graded potential?

Local graded potentials are small changes in membrane potential that occur in response to neurotransmitter binding to ligand-gated ion channels on the post-synaptic neuron. These potentials can summate and affect the likelihood that an action potential will be generated in the neuron. They are also referred to as synaptic potentials.


Why is the cell membrane sometimes referred to as a mosaic?

The cell membrane is sometimes referred as "mosaic" because is a work of art made of individual tiles or other pieces assembled to form a picture or design.


What part of the cell is referred to as to fluid mosaic model?

The cell membrane or plasma membrane is often referred to as the fluid mosaic model. This is because it is composed of a fluid lipid bilayer with embedded proteins, giving it a mosaic-like appearance. The fluidity allows for the movement and exchange of molecules within the membrane.


Why is the cell membrane sometimes referred to as fluid mosaic?

The cell membrane is sometimes referred as "mosaic" because is a work of art made of individual tiles or other pieces assembled to form a picture or design.