Endocrine glands ________.
A) secrete hormones directly into the bloodstream
B) are chemicals released into the bloodstream
C) are an extensive network of specialized cells
D) are a thin layer of cells coating the axons

Question

Endocrine glands ________.
A) secrete hormones directly into the bloodstream 
B) are chemicals released into the bloodstream 
C) are an extensive network of specialized cells
D) are a thin layer of cells coating the axons

Quizplus · Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream. They are ductless and release their secretions (hormones) into the surrounding tissue fluid, which is then absorbed into the bloodstream. Option B is incorrect because hormones are the chemicals secreted by endocrine glands into the bloodstream. Option C refers to the nervous system, not endocrine glands. Option D is related to myelin sheath which surrounds the axons, not endocrine glands.

Endocrine Glands ________