Question

list the role of
muscles of stomach wall
hcl
mucus

Answer 1

Answer:

stomach wall -to increase the volume of stomach

hcl-kill harmful microbes and to make the surrounding environment acidic so that pepsin can function

mucus-to protect stomach wall from hcl

Answer 2

Answer:

The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.