CELL SECRETIONS IN STOMACH

Question 1

MUCOUS CELLS

Answer 1

-secrete mucous

Question 2

PARIETAL CELLS

Answer 2

-SECRETE HYDROCHLORIC ACID (stimulated by G-cells) AND GHRELIN
-these cells have mircovilli
-helps make stomach acid, an ideal enviroment for protein-digesting enzyme pepsin

Question 3

CHIEF CELLS

Answer 3

-produce pepsinogen
-lipases

Question 4

ENTEROENDOCRINE CELLS

Answer 4

-secrete hormones and paracrine messengers to regulate digestion
-ex. histamine, serotonin, gastrin

Question 5

G-CELLS

Answer 5

-secrete gastrin and found in pyloric glands
-stimulate parietal cells to secrete HCl

Question 6

HCL

Answer 6

-gastric juice
-stomach acid

Question 7

ZYMOGEN

Answer 7

-inactive protein converted into active form through removal of amino acid
-ex. is pepsinogen-pepsin (important so that pepsin is not always present otherwise it will digest itself.)

Question 8

PEPSINOGEN

Answer 8

-the zymogen when in contact with HCl converts to PEPSIN (digests proteins)

Question 9

INTRINSIC FACTOR

Answer 9

-glycoprotein essential in absorbing vitamin B12 - needed to make EMF
-a decrease in EMF leads to pernicious amenia