A(n) _____ is a tract between two epithelium-lined surfaces that is open at each end.
a. Sinus tract
b. Fistula
c. Adhesion
d. Hernia
Answer: B
A(n) _____ is a tract between two epithelium-lined surfaces that is open at each end.
a. Sinus tract
b. Fistula
c. Adhesion
d. Hernia