An Individual with the Condition of Myasthenia Gravis Is Faced

question 10

Multiple Choice

An individual with the condition of myasthenia gravis is faced with an autoimmune disorder in which the body defenses attack acetylcholine receptors on muscle cells. What would be the expected effect on calcium levels near contractile proteins, following the arrival of an electrical impulse at those neuromuscular junctions?

• A) a rapid decrease in concentration due to uptake by sarcoplasmic reticulum
• B) a rapid increase in concentration due to release by sarcoplasmic reticulum
• C) small or no increases in concentration due to weak responses by acetylcholine receptors
• D) a large decrease in concentration that occurs slowly
• E) a large increase in concentration that occurs slowly

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Definitions:

Core Motives

Fundamental drives or needs that prompt individuals to engage in certain behaviors in order to achieve satisfaction or fulfillment.

Negative Emotions

Feelings that are generally considered to be unpleasant or undesirable, such as sadness, anger, and fear.

Peer Approval

The acceptance or endorsement by one's social or age group, often serving as a significant motivator for behavior, especially in adolescence.

Core Motives

Fundamental drivers of human behavior, which include needs for belonging, understanding, control, self-enhancement, and trust.