Which Choice Is Not One of the Ionic Constituents of Seawater

question 88

Multiple Choice

Which choice is not one of the Ionic Constituents of seawater typically present in concentrations greater than 1 ppm?

• A)ClO₄^-
• B)Sr²⁺
• C)Na⁺
• D)H₃Bo₃
• E)Cl^-

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Definitions:

Defecation Reflex

Combination of local and central nervous system reflexes initiated by distension of the rectum and resulting in the movement of feces out of the lower colon.

Gastrocolic Reflexes

Reflexes that mediate the increase in motility of the colon in response to food entering the stomach.

Sympathetic Nerve Fibers

Nerves that are part of the sympathetic nervous system, involved in the body's fight-or-flight response by increasing heart rate and blood pressure among other effects.

Segmental Contractions

Rhythmic contractions of the intestines that mix and propel contents in the digestive system.