Which of the following is true regarding endocrine glands?
A) They secrete substances that do not alter the metabolism of their target cells,but have extracellular effects.
B) They secrete their products by way of ducts.
C) They have an unusually low density of blood capillaries.
D) They release their secretions into the blood.
E) Their secretions may be released onto the body surface.

Question

Quizplus · Accepted Answer

Endocrine glands release their secretions, hormones, directly into the blood, which allows them to travel to target cells throughout the body.

Which of the Following Is True Regarding Endocrine Glands