Many of the Mind-Altering Drugs Affect the Brain by

question 126

Multiple Choice

Many of the mind-altering drugs affect the brain by

• A)absorbing neural impulses.
• B)imitating, duplicating, or blocking neurotransmitters.
• C)changing the sodium balance in the synapse.
• D)duplicating the effect of potassium in the nuclei.

---

Definitions:

Ctenophores

Phylum of marine animals (comb jellies) whose bodies consist of two layers of cells enclosing a gelatinous mass. The outer surface is covered with comblike rows of cilia, by which the animal moves.

Nematocysts

Specialized cells in cnidarians (like jellyfish) that shoot out a toxic barb in self-defense or to capture prey.

Biradially Symmetrical

A type of symmetry in organisms where the body can be divided into mirror-image halves in two different planes.

Cnidarian

A group of aquatic invertebrates known for their stinging cells, including jellyfish, corals, and sea anemones.