What Are the Two Major Divisions of the Nervous System

question 73

Multiple Choice

What are the two major divisions of the nervous system?

• A) endocrine and exocrine nervous systems
• B) upper and lower nervous systems
• C) spinal and extremity nervous systems
• D) central and peripheral nervous systems
• E) cerebral and autonomic nervous systems

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Definitions:

Spatial Summation

A mechanism in neural communication where multiple presynaptic neurons together stimulate a postsynaptic neuron to threshold, causing it to fire an action potential.

Synaptic Terminal

The end part of an axon that makes a synaptic contact with another neuron or with a muscle or gland cell.

Voltage-Gated Potassium Channels

Proteins that form channels in cell membranes, allowing potassium ions to pass in response to changes in membrane potential, crucial for electrical signaling in neurons.

Methimazole

A medication used to treat hyperthyroidism by inhibiting the production of thyroid hormones.