Match each description with the correct part of a neuron. Description
Rough endoplasmic reticulum with neuron cell
body
Release neurotransmitter molecules
Branches of an axon
Provide support for axon hillock and axon Part Of The Neuron
The Correct Answer and Explanation is :
Here’s the correct matching for each description to its corresponding part of the neuron:
- Rough endoplasmic reticulum with neuron cell body: Nissl bodies (or Nissl substance)
- Nissl bodies are clusters of rough endoplasmic reticulum found in the cell body (soma) of neurons. These structures are involved in the production and transport of proteins, including neurotransmitters, and are essential for the neuron’s metabolic activities.
- Release neurotransmitter molecules: Synaptic terminals (or axon terminals)
- The synaptic terminals at the end of an axon are responsible for releasing neurotransmitter molecules into the synaptic cleft (the gap between two neurons). This process allows communication between neurons and is critical for synaptic transmission.
- Branches of an axon: Axon collaterals
- Axon collaterals are branches of the main axon. These branches allow a single neuron to transmit signals to multiple target cells, increasing the efficiency of communication within the nervous system.
- Provide support for axon hillock and axon: Schwann cells (or oligodendrocytes in the CNS)
- Schwann cells in the peripheral nervous system and oligodendrocytes in the central nervous system are glial cells that support the axon, providing insulation through myelin sheaths. The axon hillock, where the axon begins, is also supported by these cells in terms of both structure and function.
Explanation:
Neurons are specialized cells that transmit electrical signals throughout the body. They consist of several key parts, including the cell body (soma), dendrites, axon, and synaptic terminals. Each part has a specific role in ensuring efficient signal transmission.
The Nissl bodies in the soma are crucial for synthesizing proteins, which are necessary for the maintenance of neuronal function. These proteins are vital for the synthesis of neurotransmitters, which are released at the synaptic terminals to communicate with other neurons or muscles. The axon collaterals allow a single neuron to influence multiple other neurons or muscle cells, increasing the reach of neural signals.
Schwann cells and oligodendrocytes provide insulation around the axon in the form of myelin, which accelerates the transmission of electrical impulses. The axon hillock, located at the junction between the soma and axon, plays a vital role in initiating the action potential that travels down the axon.
Let me generate the image of a neuron to illustrate these parts.
Here is an illustration of a neuron that highlights the various parts you asked about, including the rough endoplasmic reticulum with Nissl bodies, the synaptic terminals, axon collaterals, and Schwann cells. Each component is labeled to help visualize their structure and function.
Let me know if you’d like further details or any adjustments!
