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The Nervous System and Nerve Impulse Basics

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The Nervous System and Nerve Impulse Basics

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Questions and Answers

What are the two main types of cells in the nervous system?

Prokaryotic cells and eukaryotic cells

Ion channels and synapses

Axons and dendrites

Neurons and glial cells (correct)

During the resting potential of a neuron, where are there more positive ions located?

Inside the axon

In the synaptic cleft

Outside the axon (correct)

In the dendrites

What is the function of myelination in nerve impulse transmission?

To increase the speed of action potential propagation (correct)

To inhibit neurotransmitter release

To prevent ion movement across the membrane

To decrease the diameter of the axon

What is the role of neurotransmitters in synaptic transmission?

To transmit signals across the synapse Signup and view all the answers

Which part of the nervous system includes ganglia?

Peripheral nervous system (PNS) Signup and view all the answers

What is the purpose of the meninges in the central nervous system?

Protection and cushioning Signup and view all the answers

Which part of the brain is responsible for primary motor functions and conscious thoughts?

Frontal lobe Signup and view all the answers

What is the main function of the hypothalamus in the brain?

Regulates body temperature Signup and view all the answers

Which brain structure is associated with the integration of emotions like fear and pleasure with higher functions like reasoning and memory?

Amygdala Signup and view all the answers

What is the function of the reticular activating system (RAS) in the brain?

Regulates alertness Signup and view all the answers

The limbic system is responsible for integrating strong emotional reactions with which of the following?

Conscious thought Signup and view all the answers

Which division of the Peripheral Nervous System (PNS) controls involuntary responses and reflexes?

Autonomic Division Signup and view all the answers