are the cells of nervous tissue that send and receive messages, and are the supporting cells of nervous tissue.
An carries a nerve impulse toward a neuron cell body, and a(n) carries a nerve impulse away from a neuron cell body.

검증된 단계별 안내

Step 1: Understand the structure of nervous tissue. Nervous tissue is composed of two main types of cells: neurons and neuroglia (also called glial cells). Neurons are responsible for sending and receiving messages, while neuroglia provide support and protection for neurons.

Step 2: Identify the role of neurons. Neurons are the functional units of the nervous system that transmit electrical signals. They consist of three main parts: the cell body (soma), dendrites, and axon.

Step 3: Define the function of dendrites. Dendrites are extensions of the neuron that carry nerve impulses *toward* the cell body. They receive signals from other neurons or sensory receptors.

Step 4: Define the function of the axon. The axon is a long projection of the neuron that carries nerve impulses *away* from the cell body to other neurons, muscles, or glands.

Step 5: Summarize the relationships. Neurons send and receive messages, neuroglia support neurons, dendrites carry impulses toward the cell body, and axons carry impulses away from the cell body.

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주요 개념

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Neurons

Neurons are the fundamental cells of the nervous system responsible for transmitting information throughout the body. They send and receive electrical signals, known as nerve impulses, which facilitate communication between different parts of the body and the brain. Neurons consist of three main parts: the cell body, dendrites, and axon, each playing a crucial role in the transmission of signals.

Glial Cells

Glial cells, or neuroglia, are the supporting cells of nervous tissue that provide structural and functional support to neurons. They play various roles, including maintaining homeostasis, forming myelin, and providing protection and support for neurons. Unlike neurons, glial cells do not transmit nerve impulses but are essential for the overall health and functionality of the nervous system.

Axon and Dendrite

The axon and dendrite are two critical components of a neuron that facilitate the flow of nerve impulses. The dendrite receives signals from other neurons and carries them toward the cell body, while the axon transmits impulses away from the cell body to other neurons or muscles. This directional flow of information is vital for effective communication within the nervous system.

____are the cells of nervous tissue that send and receive messages, and ____ are the supporting cells of nervous tissue.An ____ carries a nerve impulse toward a neuron cell body, and a(n) ____carries a nerve impulse away from a neuron cell body.