Question

Explain why a buccal swab procedure should not cause bleeding. 9. The tight junctions between the epithelial cells prevent blood from leaking out into the oral cavity. The cells removed are dead and therefore cannot bleed There are no blood vessels in the buccal region that can be broken Epithelium is avascular. Removing a few cells from the apical layer of the epithelium will not damage any blood vessels. Submit Request Answer

Answer 1

Epithelium is avascular. No blood vessels cross the basement membrane to enter the tissue.

That's why removing a few cells from the apical layer of the epithelium will not damage any blood vessels and a buccal procedure should not cause bleeding