Multiple choice

Islets of Langerhans are important because they produce

  1. HCl

  2. Ptyalin

  3. Rennin

  4. Insulin

  5. Bile

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Islets of Langerhans are clusters of endocrine cells within the pancreas. Beta cells produce insulin (lowers blood glucose), alpha cells produce glucagon (raises blood glucose), and delta cells produce somatostatin. HCl is produced by stomach parietal cells, ptyalin (salivary amylase) by salivary glands, renin by stomach chief cells, and bile by liver hepatocytes.