Question

Which of the following is true regarding endocrine glands? a. They release their secretions into the blood. b. They have an unusually low density of blood capillaries. c. They secrete their products by way of ducts. d. Their secretions may be released onto the body surface.

Answer 1

Answer:

a. They release their secretions into the blood

Explanation:

Endocrine glands are glands that release their secretions directly into the blood. They are ductless in nature unlike the exocrine glands, hence they do not secrete their products by way of ducts and they do not release their secretions onto the body surface, but directly into the blood. They do not have an unusually low density of blood capillaries.

Examples of endocrine glands are adrenal glands, pituitary gland, thyroid glands etc.

Answer 2

Answer:

The correct answer is a. They release their secretions into the blood.

Explanation:

Endocrine glands are responsible for producing/secreting hormones and releasing them directly into the blood from where they travel to tissues and organs throughout the body. Some examples of endocrine glands are the pituitary gland (it regulates homeostasis), the thyroid gland (It helps to regulate growth and metabolism) and the adrenal glands (they perform different functions at the endocrine and nervous level).