The Apparent Annual Path of the Sun on the Celestial

question 213

Multiple Choice

The apparent annual path of the Sun on the celestial sphere is called the:

• A) celestial equator.
• B) ecliptic.
• C) Tropic of Capricorn.
• D) solar orbit.

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Definitions:

Initial Segment

The first portion of a nerve cell axon nearest to the cell body, critical for the initiation of neural signals.

Voltage-Regulated Channels

Ion channels in the cell membranes that open or close in response to changes in membrane potential, crucial for the transmission of electrical signals.

Hyperpolarization

A rise in the membrane potential of a cell, resulting in it becoming more negatively charged and reducing its chances of initiating an action potential.

Neuron Plasma Membrane

The membrane surrounding a neuron, controlling the entry and exit of substances, thus maintaining the cell's environment.