dendrites only
Excitatory neurotransmitter
Receptor sites on the membrane of a neuron's dendrites receive neurotransmitters, which are chemical messengers released by neighboring neurons. When these neurotransmitters bind to their specific receptors, they can initiate changes in the neuron's electrical state, leading to either excitatory or inhibitory signals. This process is essential for synaptic transmission and plays a crucial role in neural communication and processing information.
When a substance enters a neuron, it can bind to receptor sites on the neuron's membrane, triggering a cascade of events within the neuron. This can lead to changes in the neuron's electrical activity, release of neurotransmitters, or alterations in gene expression, ultimately affecting the neuron's function.
Synapse? Dendrite? Dendritic spine? Or, "You could maybe a better answer to your question get if you re-stated it less confusingly as?" ie, perhaps, "Where are the receptor sites involved in transmitting a nerve impulse LOCATED?"
The post-synaptic part of a neuron in humans is typically referring to the dendrites and cell body (soma). These structures receive signals from other neurons via neurotransmitters released at synapses.
Protein molecules on the post-synaptic cell membrane form receptor sites that bind with neurotransmitters released from the pre-synaptic neuron. This binding triggers downstream signaling pathways within the post-synaptic cell, leading to various cellular responses.
Neurotransmitter receptor sites on ligand-gated ion pores.
No, neurotransmitters are released from the axon terminal into the synaptic cleft between the axon terminal and the dendrite. They then bind to receptor sites on the dendrite to transmit signals from one neuron to another.
endorphins
... Depends entirely on the post-synaptic neuron. If it is an inhibitory synapse (often located on the actual body of the dendrite or soma), then the probability of that post-synaptic neuron firing DECREASES. The reverse is true if it is excitatory; the synapse (more likely located on a dendritic spine) will more likely induce the post-synaptic neuron to fire an action potential.
a receptor structure in a ligand-gated sodium-ion pore. The receptor is like a cave which is an outer part of a protein structure which also has a tunnel which can be open or closed, and the presence of the neurotransmitter causes the tunnel (pore) to open.
You can not become immune to it but your body WILL build up a tolerance As the above answer indicates, "immune" is not the right word for describing this. As stated above, your brain (as opposed to other systems in your body) will develop a tolerance to it. This means, even though you keep taking the same dose, the effectiveness of Adderall will decrease. Describing it as simply as I can, what actually happens is this. Adderall increases the level of two neurotransmitters in the brain--norephinephrine and dopamine. Neurotransmitters are the substances by which neurons communicate. They are released by one neuron and then attach to a receptor on a second neuron. Generally speaking, each neurotransmitter has its own receptor to which other substances will not attach. The tolerance to Adderall is caused because the brain actually keeps creating more dopamine and noepinephrine receptor sites on the second neuron. As more receptor sites are created, more dopamine and norephinephrine is needed to attach to those sites in order to produce the same effect as before.