Marco Has Great Difficulty Walking Due to Uncontrollable Tremors and Shakiness.His

question 105

Multiple Choice

Marco has great difficulty walking due to uncontrollable tremors and shakiness.His doctor told him that this was due to a decreasing amount of a neurotransmitter in his brain.Which of the following neurotransmitters would be likely to cause this difficulty?

• A) epinephrine
• B) norepinephrine
• C) glutamate
• D) dopamine

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Definitions:

Brittle Star

A type of echinoderm with a central disc and five long, slender, flexible arms, known for their ability to regenerate limbs and move by wriggling their arms.

Deuterostomes

Lineage of bilateral animals in which the second opening on the embryo surface develops into a mouth; for example, echinoderms and chordates.

Radial Symmetry

A symmetrical arrangement in which body parts radiate out from a central point, common in animals like jellyfish and starfish.

Embryonic Opening

The embryonic opening refers to the blastopore, an early stage in the development of an embryo that can develop into the mouth or anus in different animal groups.