Many Men Make Antibodies to Sperm, Resulting in Destruction of Sperm

question 59

Multiple Choice

Many men make antibodies to sperm, resulting in destruction of sperm to the point of sterility. What would be the likely origin of this autoimmune disease?

• A) Since sperm are not made until after puberty, the immune system cannot scan the antigens on the sperm for immune tolerance. After sperm are made and the immune system sees them, they are recognized as foreign.
• B) T helper cells erroneously identify sperm cells as foreign invaders, triggering the T cytotoxic cells to start killing sperm.
• C) These antibodies are produced as a result of mutations in T lymphocytes, causing them to make large amounts of antibody.
• D) Antigens on sperm cells are similar to antigens on a variety of bacteria like Streptococcus. After a strep throat caused by Streptococcus, the immune system produces antibodies to

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Definitions:

Personal Selling

A direct form of marketing that involves a salesperson presenting the benefits of a product directly to a customer in order to make a sale.

Price Fixing

An illegal practice where businesses agree on the prices of their products or services, instead of letting market forces determine them.

Odd Pricing

A pricing strategy that sets prices at figures ending in odd numbers, like $4.99, under the belief that they seem lower to consumers.

Seven-Step Sales Process

A sequence of steps salespeople follow to sell a product, typically including preparation, approach, presentation, handling objections, closing, and follow-up.