In a chemical synapse, the postsynaptic membrane is the membrane that receives a signal (binds neurotransmitter) from the presynaptic cell and responds via depolarisation or hyperpolarisation. The postsynaptic membrane is separated from the presynaptic membrane by the synaptic cleft.

What is postsynaptic cell?

In a chemical synapse, the postsynaptic membrane is the membrane that receives a signal (binds neurotransmitter) from the presynaptic cell and responds via depolarisation or hyperpolarisation. The postsynaptic membrane is separated from the presynaptic membrane by the synaptic cleft.

What are pre and postsynaptic cells?

The cell that delivers the signal to the synapse is the presynaptic cell. The cell that will receive the signal once it crosses the synapse is the postsynaptic cell. Since most neural pathways contain several neurons, a postsynaptic neuron at one synapse may become the presynaptic neuron for another cell downstream.

What is a presynaptic cell?

presynaptic cell. (Science: physiology) In a chemical synapse, the cell that releases neurotransmitter that will stimulate the postsynaptic cell.

What is the function of postsynaptic?

The postsynaptic side of the synapse is specialized to receive the neurotransmitter signal released from the presynaptic terminal and transduce it into electrical and biochemical changes in the postsynaptic cell.

What are Ranvier’s nodes?

node of Ranvier, periodic gap in the insulating sheath (myelin) on the axon of certain neurons that serves to facilitate the rapid conduction of nerve impulses.

What is postsynaptic structure?

The postsynaptic density (PSD) is a protein dense specialization attached to the postsynaptic membrane. PSDs were originally identified by electron microscopy as an electron-dense region at the membrane of a postsynaptic neuron.

What are neuronal pools?

Quick Reference. Functional groups of neurones occurring in the grey matter of the brain and spinal cord, which process and integrate incoming information received from other sources, such as the sense organs, and transmit the processed information to other destinations.

What does the postsynaptic neuron contain?

The postsynaptic element is usually the membrane of soma or dendrite of postsynaptic neuron. The portion opposite the presynaptic membrane thickens to form postsynaptic membrane. It is thicker than presynaptic membrane, about 20-50 nm. There are receptors and chemically gated ion channels in postsynaptic membrane.

What is a postsynaptic neuron quizlet?

Postsynaptic Neuron. The neuron transmitting the electrical signal away from the synapse. Electrical Synapses. A less common variety of synapse, it consists of gap junctions like those found between certain other body cells.

What is the postsynaptic response?

postsynaptic potential (PSP), a temporary change in the electric polarization of the membrane of a nerve cell (neuron). The result of chemical transmission of a nerve impulse at the synapse (neuronal junction), the postsynaptic potential can lead to the firing of a new impulse.

Are nodes of Ranvier myelinated?

Nodes of Ranvier (/ˈrɑːnvieɪ/ RAHN-vee-ay), also known as myelin-sheath gaps, occur along a myelinated axon where the axolemma is exposed to the extracellular space.