You are dissecting a fish in your biology laboratory section.Your teaching assistant points out a long oval structure and tells you it is an endocrine gland.Which of the following would you then know is a true statement about this structure?

Question

Quizplus · Accepted Answer

Endocrine glands secrete their products, called hormones, directly into the blood. Therefore, choice D is the only correct option. Option A describes an exocrine gland, which secretes products through a duct. Option B describes a product that interacts with cell membrane receptors, which would be a protein hormone. Option C describes a lipid-soluble hormone, which could be produced by an endocrine gland, but is not a distinguishing characteristic. Option E describes a gland that releases a neurotransmitter, which is not an endocrine gland.

You Are Dissecting a Fish in Your Biology Laboratory Section