Respuesta :
Answer:
B
Explanation:
An important distinction exists between exocrine and endocrine glands. Whereas exocrine glands secrete substances into a ductal system to an epithelial surface, endocrine glands secrete products directly into the bloodstream.
Answer:
A
Explanation:
endocrine glands secrete hormones into the bloodstream and exocrine glands secrete products into ducts