Which of the Following is a Feature of an Endocrine

Question

Which of the following is a feature of an endocrine gland?
A) secretes a hormone directly into the bloodstream
B) secretes a hormone into a gland or duct
C) the product of these glands is carried into the lumen of an organ
D) characterized by the salivary glands
E) they do not respond to a negative feedback system

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream, which then travels to target cells throughout the body. This distinguishes them from exocrine glands, which secrete their products into ducts to be transported to a specific location. The other options are not features of endocrine glands - C refers to exocrine glands, D refers to salivary glands which are exocrine, and E is not true as endocrine glands do respond to negative feedback to regulate hormone secretion.