the Neuron Worksheet. () the following terms to complete Pa…

The Neuron Worksheet aims to enhance understanding of the structure and functions of neurons, which are the fundamental building blocks of the nervous system. In Part I of the worksheet, you will be provided with several terms. Your task is to utilize these terms to complete the respective sections. Let’s delve into each term in detail before proceeding with the worksheet.

1. Axon: The axon is a long fiber that extends from the cell body of a neuron and transmits electrical impulses away from the cell body to other neurons or target cells. It is responsible for facilitating the communication between neurons.

2. Dendrites: Dendrites are the highly branched extensions of a neuron that receive impulses from other neurons and convey them towards the cell body. These structures play a crucial role in the integration of multiple signals received by the neuron.

3. Synapse: Synapses are specialized junctions between two neurons or between a neuron and a target cell. They are vital sites for communication, as they allow the transmission of chemical or electrical signals between these cells.

4. Neurotransmitter: Neurotransmitters are chemical messengers that transmit signals across synapses. They are released by the presynaptic neuron and bind to receptors on the postsynaptic neuron, leading to the propagation of the electrical impulse.

5. Myelin Sheath: The myelin sheath is a fatty, insulating substance that covers the axons of some neurons. It serves as an electrical insulator and speeds up the conduction of nerve impulses.

6. Action Potential: An action potential refers to the brief electrical signal that travels along the axon of a neuron. It involves a sudden change in the electrical charge inside and outside the neuron, leading to the transmission of information.

7. Resting Potential: The resting potential refers to the electrical potential difference across the cell membrane of a neuron when it is not actively transmitting signals. It is maintained by the unequal distribution of ions inside and outside the neuron.

8. Sodium-Potassium Pump: The sodium-potassium pump is a membrane protein present in neurons that actively transports sodium ions out of the cell and potassium ions into the cell. This pump plays a crucial role in maintaining the resting potential and restoring the ionic imbalances after an action potential.

Now that we have discussed these terms, let’s proceed to part I of the worksheet. In this section, you will be asked to complete various statements using the provided terms. Ensure to consider the definitions and functions we have discussed.

1. The __________ is a long fiber that transmits electrical impulses away from the cell body of a neuron.

2. __________ receive impulses from other neurons and convey them towards the cell body.

3. The junction between two neurons or between a neuron and a target cell is called a __________.

4. Chemical messengers that transmit signals across synapses are known as __________.

5. The __________ is an insulating substance that covers the axons of certain neurons, speeding up the conduction of nerve impulses.

6. An __________ refers to the brief electrical signal that travels along the axon of a neuron.

7. The __________ refers to the electrical potential difference across the cell membrane of a neuron when it is not actively transmitting signals.

8. The __________ actively transports sodium ions out of the cell and potassium ions into the cell, contributing to the maintenance of the resting potential.

Remember, understanding these terms is essential for comprehending the structure and functions of neurons. Take your time and carefully consider each term before providing your answers in Part I of the worksheet.