Answered: What are the three general…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question

What are the three general characteristics of hormones

Expert Solution

Step 1

Hormones are very essential for body activities. They are chemical messengers and are secreted by specialized structures namely endocrine and exocrine glands. In animals there are many hormones present, and each hormone is different in its function. They will act on specific organs which is called target organs.

Step 2

The major characteristics of hormones include,

The hormones are secreted directly into the blood and they travel throughout the body to find out the targeted organ.
Hormones are chemical. So they act as chemical messengers and they help to the regulation of body activity by attaching to the targeted organ or cells.
There are two kinds of hormones, peptide hormones, and steroid hormones. The peptide hormones act on the receptors found on the surface of the cells and steroid hormones act on the receptors present inside the cells.