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Questions and Answers
What is the function of the postsynaptic terminal?
What is the function of the postsynaptic terminal?
Which part of the synapse contains autoreceptors?
Which part of the synapse contains autoreceptors?
What is the role of reuptake pumps in a synapse?
What is the role of reuptake pumps in a synapse?
Which of the following is an excitatory neurotransmitter in the nervous system?
Which of the following is an excitatory neurotransmitter in the nervous system?
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What happens at a synapse during neurotransmission?
What happens at a synapse during neurotransmission?
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Which part of the neuron is responsible for containing the neurotransmitter?
Which part of the neuron is responsible for containing the neurotransmitter?
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What is the main function of ion channels in a neuron?
What is the main function of ion channels in a neuron?
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Which type of neurotransmitter is GABA?
Which type of neurotransmitter is GABA?
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Study Notes
Neurons and Neurotransmitters
- Billions of neurons in the brain communicate with each other through neurotransmitters.
- Neurons are connected to each other through a synaptic junction, where information is transferred through special chemical releases called neurotransmitters.
Types of Neurotransmitters
- Excitatory neurotransmitters: Glutamate, Acetylcholine, Aspartate
- Inhibitory neurotransmitters: GABA (Gamma Amino Butyric Acid), Glycine
Synapse Structure
- A synapse is the junction of two neurons.
- Parts of a synapse:
- Presynaptic terminal: The neuron bringing information
- Postsynaptic terminal: The neuron taking in the information
- Synaptic cleft: The space between the two neurons at the synapse
- Synaptic vesicle: A sac-like structure that contains the neurotransmitter
- Post synaptic terminal receptors: Receptors present on the post synaptic terminal
- Autoreceptors: Receptors present on the presynaptic terminal
- Reuptake pumps: On the presynaptic terminal, which pick up the neurotransmitter released and store it back into the synaptic vesicles
- Ion channels: Present on the neuronal cell membrane, which open and allow ions to flow in or out
Transmission of Impulses
- Transmission of impulses requires the opening of ion channel gates.
- This leads to the inflow of ions into the cell.
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Description
Learn about the billions of neurons in the brain and how they communicate with each other through neurotransmitters at synaptic junctions. Explore different types of neurotransmitters such as Excitatory (e.g. Glutamate, Acetylcholine) and Inhibitory (e.g. GABA, Glycine).
