The Brain Is Composed of Billions of ______

question 1

Multiple Choice

The brain is composed of billions of ______.

• A) cortices
• B) neurons
• C) lobes
• D) synapses

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Definitions:

Infections

Invasion and multiplication of microorganisms in body tissues, which can cause disease and immune response.

Virus

A microscopic infectious agent that replicates only inside the living cells of organisms, causing a variety of diseases in humans, animals, and plants.

HIV

Human Immunodeficiency Virus, a virus that attacks the immune system and can lead to Acquired Immunodeficiency Syndrome (AIDS) if not treated.

Infected

The state of having been invaded by pathogenic organisms such as bacteria, viruses, or fungi, leading to disease.