Neurons

Front

What is the nucleus in a neuron?

Back

The nucleus is the control center of the neuron, containing the cell's genetic material and regulating its activities.

Front

What are Nodes of Ranvier?

Back

Nodes of Ranvier are gaps in the myelin sheath of a neuron that facilitate rapid conduction of nerve impulses.

Front

What is a neurotransmitter?

Back

A neurotransmitter is a chemical messenger that transmits signals across a synapse from one neuron to another.

Front

What does unmyelinated mean in the context of neurons?

Back

Unmyelinated neurons lack a myelin sheath, which results in slower signal transmission compared to myelinated neurons.

Front

What is the function of Schwann cells?

Back

Schwann cells are responsible for the formation of the myelin sheath around peripheral nerve fibers, aiding in faster signal transmission.

Front

What are neurofibrils?

Back

Neurofibrils are fine, thread-like structures in the cytoplasm of neurons that provide structural support.

Front

What are Nissl bodies?

Back

Nissl bodies are clusters of rough endoplasmic reticulum and ribosomes in the neuron, involved in protein synthesis.

Front

What is the role of the synaptic cleft?

Back

The synaptic cleft is the small gap between neurons where neurotransmitters are released to transmit signals.

Front

What is the axon membrane?

Back

The axon membrane is the outer layer of the axon that helps in the conduction of electrical impulses.

Front

What is myelin?

Back

Myelin is a fatty substance that insulates axons, increasing the speed of electrical signal transmission.