Question

in the small intestine, __________ ensure(s) that most digested nutrients pass through the epithelial cells and not between them.

the plasma membrane

tight junctions

gap junctions

desmosomes

question 5 (1 point)

________ secrete ______ into ________.

endocrine glands; hormones; ducts

exocrine glands; mucus; the blood

goblet cells; mucus; the blood

endocrine glands; hormones; the blood

exocrine glands; hormones; ducts

question 6 (1 point)

Explanation:

For the first question, tight junctions form a seal between epithelial cells in the small intestine, preventing digested nutrients from passing between cells. For the second question, endocrine glands secrete hormones directly into the blood. Exocrine glands secrete substances like mucus into ducts, and goblet cells secrete mucus but not into the blood.

Answer:

1. B. tight junctions
2. D. Endocrine glands; hormones; the blood