Table of Contents
What are the tiny gaps between neurons called?
The synapse is a very small space between two neurons and is an important site where communication between neurons occurs. Once neurotransmitters are released into the synapse, they travel across the small space and bind with corresponding receptors on the dendrite of an adjacent neuron.
What is the liquid filled gap between two neurons called?
There is a fluid-filled space between the two neurons called the synaptic cleft. As a result, the nerve impulse cannot jump from one neuron to another. Axon terminals have a knob-like structure, which contains synaptic vesicles.
What is the fluid-filled gap between neurons?
Next to the synaptic knob is the dendrite of another neuron (see Figure 2.3). Between them is a fluid-filled space called the synapse (synaptic gap).
What substance is secreted into the gap How does this affect the nervous impulse?
Chemical transmission of a nerve impulse at the synapse. The arrival of the nerve impulse at the presynaptic terminal stimulates the release of neurotransmitter into the synaptic gap.
What is the gap between two neurons called quizlet?
Terms in this set (8) (gap/ space between neurons) The tiny, fluid- filled gap between the tip of the sending neuron and the receptor site on the receiving neuron. The tiny gap at this junction is called the synaptic gap or cleft.
What is myelination made of?
Myelin is made up of lipids and proteins, a fatty substance with a whitish appearance. It is made up of many concentric layers of plasma membrane to make up the myelin sheath around axons.
How are chemical signals propagated between nerve cells?
A synaptic signal is a chemical signal that travels between nerve cells. Signals within the nerve cells are propagated by fast-moving electrical impulses.
What kind of cells support neurons in the CNS?
One cell providing support to neurons of the CNS is the astrocyte, so named because it appears to be star-shaped under the microscope (astro- = “star”). Astrocytes have many processes extending from their main cell body (not axons or dendrites like neurons, just cell extensions).
What are the role of glial cells in the nervous system?
Glial cells, or glia, are known to play a supporting role for nervous tissue. Ongoing research pursues an expanded role that glial cells might play in signaling, but neurons are still considered the basis of this function.
How are nerve cells connected to other nerve cells?
The point at which the Axon terminal of a neuron meets the dendrites tip of another neuron called synapses. There are so many tiny gaps that hold chemicals, called neurotransmitters. Neurotransmitter chemicals transmit nerve impulses from one nerve to another or from nerves to muscle cells.