The Process of Weakening a Pathogen to Be Used as a Vaccine

question 21

Multiple Choice

The process of weakening a pathogen to be used as a vaccine is called

• A) thinning
• B) propagation
• C) extraction
• D) attenuation

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Definitions:

Neurotransmitters

Neurotransmitters are chemicals found in the nervous system that transmit signals across a synapse from one neuron to another, influencing mental processes and behavior.

Myelin

An insulating layer, or sheath, made of protein and fatty substances, that surrounds the axons of some neurons, enabling fast and efficient transmission of electrical impulses.

Synaptic Cleft

The small gap at a synapse between neurons, across which neurotransmitters move from one neuron to another.

Terminal Buttons

The small knobs at the end of an axon that release chemicals called neurotransmitters into the synapse, thereby transmitting nerve impulses to another nerve cell.