.gif "แทงบอล")
The cells secrete mucus on the surface of the epithelium. Mucus protects it and its underlying tissues from mechanical-chemical influences. and infection and also participates in parietal digestion, for example in the breakdown of proteins, fats and carbohydrates of food with the help of enzymes that absorb into mid-range products endocrine cells Many types secrete hormones into the bloodstream. which controls the functions of organs of the local digestive system Single-layer epithelium is represented by ectoderm derivatives.
อ่านเพิ่มเติม โรงเรียนพึ่งตนเอง
นานาสาระ เซลล์
โพสต์โดย : advance12
