Why Would It Make Sense to Have the Birthing Process

question 28

Multiple Choice

Why would it make sense to have the birthing process controlled by a positive feedback loop?

• A) because there is a definite cutoff point to be reached
• B) because birth is a positive experience
• C) because there is no sensor involved
• D) because there is no stimulus involved
• E) because there is a fluctuation of hormones above and below the level necessary to induce birth

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Definitions:

Flukes

Parasitic flatworms that infect the liver, lungs, and other organs of their hosts, with life cycles involving one or more intermediate hosts.

Oral Sucker

A muscular structure found in some animals, such as parasitic worms, used for attachment to or ingestion of food from hosts or surfaces.

Alimentary Canal

A series of hollow organs joined in a long, twisting tube from the mouth to the anus, through which food is digested and nutrients are absorbed.

Molluscs

Invertebrates including squids, clams, snails, and chitons; characterized by a visceral mass, a mantle, and a foot.