The Defecation Reflex

question 157

Multiple Choice

The defecation reflex

• A)is stimulated by distention of the rectum.
• B)inhibits further peristalsis in the rectum and lower colon.
• C)constricts the internal anal sphincter.
• D)lasts several hours.
• E)None of these choices is correct.

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Definitions:

Stoichiometry

The calculation of reactants and products in chemical reactions based on the conservation of mass.

Chemical Reactions

Processes in which one or more substances, the reactants, are converted to one or more different substances, the products.

Chemical Equations

Chemical equations are symbolic representations of chemical reactions, depicting the reactants and products, their phases, and the stoichiometric relationships between them.

HCl

Hydrochloric acid, a strong corrosive acid that is used in chemical synthesis and as a digestive aid in the human stomach.