Protection for the interior surface of the stomach against the acids and enzymes in the gastric lumen is afforded by
A) the carpet of mucus secreted by the columnar epithelium lining all portions of the stomach.
B) the shallow depressions called gastric pits.
C) the rapid rate of mechanical mixing of the stomach contents, which exposes the lining to
chyme for only a short time.
D) the esophageal sphincter.
E) None of the answers are correct.
A) the carpet of mucus secreted by the columnar epithelium lining all portions of the stomach.
You might also like to view...
________ is the organic component of the matrix in developing or repairing bone
A) Collagen B) Hydroxyapatite C) Lamella D) Osteocyte E) Osteoid
Mast cells are ________
a. are transformed monocytes b. are a subset of B-cells c. a subset of T-cells d. are macrophages that remain in the circulation e. are analogous to sensing-integrating endocrine glands.
Transcription yields protein and translation produces RNA
Indicate whether the statement is true or false
What is the name given to substances that can cause birth defects or even death if exposure to them occurs during the embryonic period?
A. Teratogens B. Fungicides C. Antibiotics D. Pesticides E. Mutagens