what is the function of synaptic vesicles inside axon terminals?
610683
In a neuron, synaptic vesicles (or neurotransmitter vesicles) store various neurotransmitters that are released at the synapse. The release is regulated by a voltage-dependent calcium channel. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
1159756
Neurotransmitter release from the presynaptic terminal consists of a series of intricate steps: 1) depolarization of the terminal membrane, 2) activation of voltage-gated Ca2+ channels, 3) Ca2+ entry, 4) a change in the conformation of docking proteins, 5) fusion of the vesicle to the plasma membrane, with subsequent ...
306164
Numerous dendrons and dendrites provide a large surface area for connecting with other neurones, and carry nerve impulses towards the cell body. A single long axon carries the nerve impulse away from the cell body.
70117
['Sensory stimuli are converted to electrical signals.', 'Action potentials are electrical signals carried along neurons.', 'Synapses are chemical or electrical junctions that allow electrical signals to pass from neurons to other cells.']
1268314
Once in the synapse, it must be quickly removed or chemically inactivated in order to prevent constant stimulation of the post-synaptic cell and an excessive firing of action potentials. Some neurotransmitters are removed from the synaptic cleft by special transporter proteins on the pre-synaptic membrane.
1400410
Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.
498265
Like rods, each cone cell has a synaptic terminal, an inner segment, and an outer segment as well as an interior nucleus and various mitochondria. The synaptic terminal forms a synapse with a neuron such as a bipolar cell. The inner and outer segments are connected by a cilium.
480538
There are essentially 3 parts to a synapse: the presynaptic neuron, the synaptic cleft, and the postsynaptic neuron. There are two kinds of synapses in the nervous system: electrical and chemical.
1171591
It mediates motor function at the neuromuscular junction but also has functions in the parasympathetic and sympathetic nervous systems. It is involved in learning and memory through actions at nicotinic AChRs in the CNS.
178571
Transport and Release of Neurotransmitters Neurotransmitters are made in the cell body of the neuron and then transported down the axon to the axon terminal. Molecules of neurotransmitters are stored in small "packages" called vesicles (see the picture on the right).
1174289
Neurons, or nerve cells that carry nerve impulses, are made up of the cell body, the axon, and several dendrites. Signals move across the synapse, the place where the axon of one neuron meets the dendrite of another, using chemicals called neurotransmitters.
261990
Axon terminals. End of axon and beginning of junction with other cells where messages are transferred cia chemicals called neurotransmitters—- transfers to dendrite.
1472593
Some types of neurons have no axon and transmit signals from their dendrites. In some species, axons can emanate from dendrites known as axon-carrying dendrites. ... The swollen end of a telodendron is known as the axon terminal which joins the dendron or cell body of another neuron forming a synaptic connection.
753501
The majority of synaptic vesicles (vesicle meaning "little bladder") are found in the region close to the presynaptic membrane, where they are released upon stimulation. This region is aptly called the release zone. There are both small and large vesicles.
879643
The function of a synaptic knob is to change the action potential that is carried by axons into a chemical message. store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.
760881
Voltage-gated calcium channels are important mediators of depolarization-evoked release of neurotransmitters. To ensure efficient coupling of calcium influx to rapid vesicle release, calcium channels must be localized within the active zones of presynaptic nerve terminals. Most CNS synapses rely on Cav2. 2 and Cav2.
349056
Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.