Question

tight junctions are found between the epithelial cells; *
lining the digestive tract
surrounding the brain
connecting bones to muscles
the urinary bladder

Explanation:

Tight junctions are cell - to - cell junctions that prevent the passage of substances between cells. In the digestive tract, tight junctions between epithelial cells prevent the leakage of digestive enzymes and harmful substances from the lumen of the digestive tract into the underlying tissues.

Answer:

lining the digestive tract