A Neuron Or Nerve Cell Quiz Chapter 1

1. What are chemicals that carry messages across the synapse to a dendrite of a receiving neuron.

Synapse

Neurotransmitters

Glutamate

Endorphins

Neurotransmitters are chemicals that carry messages across the synapse to a dendrite of a receiving neuron. They play a crucial role in transmitting signals between nerve cells, allowing for communication within the nervous system. Neurotransmitters are released from the presynaptic neuron into the synapse and bind to receptors on the postsynaptic neuron, triggering a response. Examples of neurotransmitters include serotonin, dopamine, and acetylcholine.

Explanation

Neurotransmitters are chemicals that carry messages across the synapse to a dendrite of a receiving neuron. They play a crucial role in transmitting signals between nerve cells, allowing for communication within the nervous system. Neurotransmitters are released from the presynaptic neuron into the synapse and bind to receptors on the postsynaptic neuron, triggering a response. Examples of neurotransmitters include serotonin, dopamine, and acetylcholine.

2. What is the deffinition of Synapse

Are chemicals that carry messages across the synapse to a dendrite of a receiving neuron.

Regulates motor behavior, motivation, pleasure, and emotional arousal

Influences mood and arousal

The correct answer is the space between two neurons where the axon of a sending neuron communicates with the dendrites of a receiving neuron by using chemical messages. This definition accurately describes the synapse, which is the junction between two neurons where neurotransmitters are released from the axon terminal of the presynaptic neuron and bind to receptors on the dendrites of the postsynaptic neuron, allowing for the transmission of signals between neurons.

Explanation

The correct answer is the space between two neurons where the axon of a sending neuron communicates with the dendrites of a receiving neuron by using chemical messages. This definition accurately describes the synapse, which is the junction between two neurons where neurotransmitters are released from the axon terminal of the presynaptic neuron and bind to receptors on the dendrites of the postsynaptic neuron, allowing for the transmission of signals between neurons.

3. All or None Law-neurons are either on or off, there is no in between

True

False

The statement is true because the All or None Law states that neurons either fire completely or do not fire at all. This means that there is no in-between state where the neuron partially fires. When a neuron receives enough stimulation to reach its threshold, it will fire an action potential, transmitting a signal to other neurons. However, if the stimulation is not sufficient to reach the threshold, the neuron will not fire at all. Therefore, the firing of neurons follows an all-or-none response.

Explanation

The statement is true because the All or None Law states that neurons either fire completely or do not fire at all. This means that there is no in-between state where the neuron partially fires. When a neuron receives enough stimulation to reach its threshold, it will fire an action potential, transmitting a signal to other neurons. However, if the stimulation is not sufficient to reach the threshold, the neuron will not fire at all. Therefore, the firing of neurons follows an all-or-none response.

4. What is a Neuron

The basic elements of the nervous system.

Chemicals that carry messages across the synapse to a dendrite of a receiving neuron.

The reabsorption of neurotransmitters by a terminal button

The major inhibitory neurotransmitter in the brain

A neuron is the basic element of the nervous system. Neurons are specialized cells that transmit information in the form of electrical signals. They are responsible for processing and transmitting information throughout the body. Neurons consist of a cell body, dendrites, and an axon. The cell body contains the nucleus and other organelles, while dendrites receive signals from other neurons. The axon carries the electrical signal away from the cell body and transmits it to other neurons or muscles. Overall, neurons play a crucial role in the functioning of the nervous system.

Explanation

A neuron is the basic element of the nervous system. Neurons are specialized cells that transmit information in the form of electrical signals. They are responsible for processing and transmitting information throughout the body. Neurons consist of a cell body, dendrites, and an axon. The cell body contains the nucleus and other organelles, while dendrites receive signals from other neurons. The axon carries the electrical signal away from the cell body and transmits it to other neurons or muscles. Overall, neurons play a crucial role in the functioning of the nervous system.

5. What is the structure of a neuron?

Cell Body -> Axon -> Dendrites -> Dendrites of Adjecent Neurons

Axon -> Dendrites -> Cell Body -> Dendrites of Adjecent Neurons

Dendrites ->Cell Body ->Axon ->Dendrites of Adjecent Neurons

Dendrites of Adjecent Neurons ->Cell Body -> Axon -> Dendrites

The correct answer is the structure of a neuron is Dendrites -> Cell Body -> Axon -> Dendrites of Adjacent Neurons. This is the correct sequence of the parts of a neuron. Dendrites receive signals from other neurons and transmit them to the cell body. The cell body contains the nucleus and other organelles. The axon carries the electrical signals away from the cell body. And finally, the dendrites of adjacent neurons receive the signals transmitted by the axon.

Explanation

The correct answer is the structure of a neuron is Dendrites -> Cell Body -> Axon -> Dendrites of Adjacent Neurons. This is the correct sequence of the parts of a neuron. Dendrites receive signals from other neurons and transmit them to the cell body. The cell body contains the nucleus and other organelles. The axon carries the electrical signals away from the cell body. And finally, the dendrites of adjacent neurons receive the signals transmitted by the axon.