Neurons are separated by small gaps called synapses. These synapses allow for the transmission of signals between neurons through the release of neurotransmitters. The space between neurons at the synapse is crucial for communication in the nervous system and enables the processing of information.
In a synapse, the terminal of the presynaptic neuron and the dendrite or cell body of the postsynaptic neuron meet. The presynaptic neuron releases neurotransmitters into the synaptic cleft, where they bind to receptors on the postsynaptic neuron, allowing for communication between the two neurons.
Neurons are separated from blood-borne substances by the blood-brain barrier (BBB), which is a highly selective semipermeable barrier formed by specialized endothelial cells in the blood vessels of the brain. These endothelial cells have tight junctions that prevent most substances in the blood from freely crossing into the brain. The BBB allows only certain molecules, such as oxygen and nutrients, to pass through while keeping out potentially harmful substances, like toxins and pathogens.
Neurons are separated by a small gap called the synapse. This junction allows for the transmission of signals between neurons through the release of neurotransmitters from the axon terminal of one neuron, which then bind to receptors on the dendrites of the next neuron. This process enables communication within the nervous system, facilitating various functions such as reflexes and sensory processing.
sensory neurons
Sensory Neurons
Sensory neurons and neurons are connected by Interneurons.
Afferent Neurons
Interneurons or association neurons.
Motor neurons and intern neurons
The neurons form the bodies nervous system.
Sensory Neurons
Interneurons or association neurons are connector neurons that establish connections between other neurons.