Question

A nerve signal is also called a/n _______.

The _______ is the part of the neuron that transmits the signal, and is often covered in a myelin sheath for insulation.
Cells are usually negatively charged inside their membranes, but a/n _______ is created when this charge is changed temporarily to send a signal.
The _______ is associated with impulse control and spontaneity in the brain.
The regulation of body temperature is done by the _______ in the brain.
The _______ lobe of the brain processes vision impulses from the eyes.
Drug addiction can alter levels of the neurotransmitter _______ in the brain.


Respond to the following based on your reading.

Describe how a nerve impulse affects a neuron, travels the length of a neuron, and how the neuron recovers to be ready for the next nerve impulse it receives.

Answer 1

impulse

axon

action potential

frontal lobe

hypothalamus

occipital

dopamine

Before receiving a nerve impulse, a neuron is at its resting potential, with more negative charges inside the cell than on the outside of the cell. When the neuron receives the nerve impulse, it is depolarized, allowing positive ions to flow across the cell membrane into the neuron. This is called an action potential, and the action potential travels the length of the neuron, taking advantage of the myelin sheath on many neurons. Once the signal has traveled through the neuron, the sodium-potassium pump repolarizes the cell, restoring the resting potential of the neuron.

Step-by-step explanation:

Answer 2

pulse

axon

action potential

frontal lobe

hypothalamus

occipital

dopamine

Before receiving a nerve impulse, a neuron is at its resting potential, with more negative charges inside the cell than on the outside of the cell. When the neuron receives the nerve impulse, it is depolarized, allowing positive ions to flow across the cell membrane into the neuron. This is called an action potential, and the action potential travels the length of the neuron, taking advantage of the myelin sheath on many neurons. Once the signal has traveled through the neuron, the sodium-potassium pump repolarizes the cell, restoring the resting potential of the neuron.

Step-by-step explanation: