(Video: Neural Communication: Impulse Transmission Across the Synapse) the Human

question 142

Multiple Choice

(Video: Neural communication: impulse transmission across the synapse) The human nervous system is composed of billions of neurons that communicate

• A) by electrical impulses.
• B) by actual physical contact.
• C) from one dendrite to another dendrite.
• D) from one axon to another axon.

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Definitions:

Free Energy

A thermodynamic quantity that represents the amount of energy in a system that is available to do work.

Reactants

Substances initially present in a chemical reaction that are consumed during the reaction to create products.

Endergonic Reactions

Chemical reactions that require an input of energy to proceed and are characterized by a positive change in free energy.

Exergonic Reactions

Chemical reactions that release energy, generally in the form of heat, and occur spontaneously.