Multiple Sclerosis Is a Disease That Involves

question 522

Multiple Choice

Multiple sclerosis is a disease that involves:

• A) the degeneration of the myelin sheath, slowing or interrupting the transmission of neural messages.
• B) an abnormal increase in the thickness of the myelin sheath, blocking the release of neurotransmitters.
• C) the gradual decline in the ability of neurons to produce neurotransmitters.
• D) dendrites becoming brittle and breaking.

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Definitions:

Monotremes

A group of mammals that lay eggs instead of giving birth to live young, including the platypus and echidnas.

Metatheria

A taxonomic group of mammals, commonly known as marsupials, characterized by giving birth to partially developed offspring that typically complete their development in the mother's pouch.

Hemichordates

A group of marine animals closely related to chordates, characterized by having a body divided into three parts: a proboscis, a collar, and a trunk.

Deuterostomes

A group of animals characterized by the development of the mouth from an opening other than the blastopore during embryonic development.