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Intestinal glands produce intestinal juice. What is its pH, and is it acidic or alkaline?
ApH 1.5 to 3.5, strongly acidic
BpH 6.35 to 6.85, slightly acidic
CpH 7.4 to 7.8, slightly alkaline
DpH 7.6 to 8.6, clearly alkaline
Answer & Solution
Correct answer: C. pH 7.4 to 7.8, slightly alkaline
1. The mucosa between the villi is dotted with crevices leading into tubular intestinal glands.
2. These glands produce intestinal juice, a mixture of water and mucus.
3. Its pH is 7.4 to 7.8, which makes it slightly alkaline.
4. Between about one and two liters are secreted each day in response to distention or irritation by chyme.
5. The pH 7.6 to 8.6 range is bile, which is a separate and more strongly alkaline secretion.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.5 The Small and Large Intestines_
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