Question 6 • PA Human Anatomy & Physiology A 2026-2027 WHITE IC
Epithelial tissue lines organs and forms glands that secrete substances, including stomach acid in the digestive tract. The heart contracts using cardiac muscle, blood vessels constrict using smooth muscle, and body insulation is mainly provided by adipose connective tissue. Therefore, “stomach acid secretion in the digestive tract : epithelial tissue” is the correct relationship.
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