the means of travel within and between neurons is different because:
a. electrical signals move impulses within the neuron, while chemical signals move the impulses between neuron.
b. chemical signals move the impulses within the neuron, while electrical signal moves impulses between neurons.
c. chemical signals initiate all messages in the dendrite, but changes to electrical in the axon.
d. the axon will not receive electrical signals, but the chemical signal pushes the impulse
I think the answer is C
What does C have to do with "...between neurons..."? You have to answer the question, it seems to me.
Actually, the correct answer is A: electrical signals move impulses within the neuron, while chemical signals move the impulses between neurons.
Within a neuron, electrical signals called action potentials are responsible for transmitting information along the length of the cell. These electrical signals are generated by changes in the voltage across the neuron's membrane.
On the other hand, between neurons, the transmission of information occurs through chemical signals called neurotransmitters. When an action potential reaches the end of a neuron (pre-synaptic neuron) at the synaptic terminal, it triggers the release of neurotransmitters into the synapse. These neurotransmitters then bind to receptors on the receiving neuron (post-synaptic neuron), allowing the electrical signal to be passed on.
To determine the correct answer, let's analyze the options:
a. Electrical signals move impulses within the neuron, while chemical signals move the impulses between neurons.
This statement is incorrect because both electrical and chemical signals are involved in both intraneuronal (within the neuron) and interneuronal (between neurons) communication.
b. Chemical signals move the impulses within the neuron, while electrical signals move impulses between neurons.
This statement is also incorrect. While chemical signals do play a role within the neuron, electrical signals are the primary means of communication within a neuron.
c. Chemical signals initiate all messages in the dendrite, but changes to electrical in the axon.
This statement is partially correct. Chemical signals, in the form of neurotransmitters, are released from one neuron's axon terminal and received by another neuron's dendrites. However, electrical signals initiate and propagate the messages within the neuron, including the axon.
d. The axon will not receive electrical signals, but the chemical signal pushes the impulse.
This statement is incorrect. The axon is responsible for propagating electrical signals (action potentials) from the cell body to the axon terminals where chemical signals are released.
Based on this analysis, the correct answer is C. Chemical signals do initiate messages in the dendrites, and the electrical signals come into play as the impulses travel down the axon. However, it is important to note that both chemical and electrical signals are essential for communication within and between neurons.