Nerve Cell Labeling Quiz

Questions and Answers

What is the primary function of the signal direction in a nerve cell?

To transmit signals away from the cell body (correct)

To support the cell's structure

To receive signals

To produce neurotransmitters

What are dendrites?

Structures that receive signals from other nerve cells

What is the cell body?

The part of the neuron that contains the nucleus and organelles

What is the function of the nucleus in a nerve cell?

To store genetic material and control cell activities Signup and view all the answers

What is an axon?

A long extension that transmits signals away from the cell body Signup and view all the answers

What does the myelin sheath do?

Insulates the axon to speed up signal transmission Signup and view all the answers

What are supporting cells?

Cells that provide support and protection for neurons Signup and view all the answers

What are nodes of Ranvier?

Gaps in the myelin sheath along the axon Signup and view all the answers

What are synaptic knobs?

Structures at the end of an axon that release neurotransmitters Signup and view all the answers

What is a signal pathway?

The route taken by nerve impulses to transmit information Signup and view all the answers

Study Notes

Signal Direction

Refers to the way electrical impulses travel within the nerve cell.
Essential for the communication between neurons and other cells.

Dendrites

Branch-like structures that receive signals from other neurons.
Increase the surface area for neurotransmitter connections.

Cell Body

Contains the nucleus and organelles, coordinating the cell's activities.
Responsible for integrating incoming signals and determining action potential.

Nucleus

Central part of the cell body housing genetic material (DNA).
Controls cell functions and regulates gene expression.

Axon

Long, thin projection that transmits nerve impulses away from the cell body.
Ends in axon terminals that connect to other neurons or muscles.

Myelin Sheath

Fatty layer that insulates the axon, speeding up signal transmission.
Formed by Schwann cells in peripheral nerves; important for rapid communication.

Supporting Cells

Glial cells that provide support, nutrition, and protection for neurons.
Types include astrocytes, oligodendrocytes, and microglia.

Nodes of Ranvier

Gaps in the myelin sheath along the axon.
Facilitate faster signal transmission through saltatory conduction.

Synaptic Knobs

Specialized structures at the end of axons where synapses occur.
Contain neurotransmitters that transmit signals to other neurons or target cells.

Signal Pathway

The route taken by electrical impulses as they travel through the nerve cell.
Includes dendrites, cell body, axon, and synaptic knobs.

Description

Test your knowledge on the anatomy of nerve cells with this labeling quiz. Each card presents a different component of the neuron, allowing you to identify key parts and their functions. Perfect for students studying biology or neuroscience.