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Steroid Hormones
Definition
Steroid hormones are a group of organic compounds that include cholesterol, fat-soluble vitamins, and various hormones. They play a vital role in maintaining bodily functions.

Classification
- Cholesterol: A primary steroid molecule essential for cell membranes, bile acid production, and steroid hormone synthesis.
- Vitamin D: A steroid that acts as a hormone necessary for calcium absorption and bone health.
- Sex Hormones (Steroid): Includes estrogen, testosterone, and others involved in reproductive functions.

Function
- Steroid hormones regulate metabolism, immune responses, growth, and reproduction.
- They are synthesized in the endoplasmic reticulum and transported via lipoproteins to target tissues.

# Steroid Hormone: A Comprehensive Overview

## What Are Steroid Hormones?
Steroid hormones are lipid-based signaling molecules produced by the endocrine system. They play a crucial role in regulating various physiological processes within the body. Unlike other types of hormones like peptides or amino acids, steroid hormones derive their name from their steroid nucleus—a four-ring carbon structure with hydroxyl groups attached. These molecules are essential for maintaining homeostasis and regulating responses to internal and external stimuli.

## Classification of Steroid Hormones
Steroid hormones can be categorized based on their specific functions and chemical structures. The primary classifications include:

1. **Glucocorticoids**
- Produced by the adrenal glands, glucocorticoids regulate metabolism, immune response, and bone development. Examples include cortisol and aldosterone.

2. **Mineralocorticoids**
- Also synthesized by the adrenal glands, these hormones primarily affect water balance and blood volume through their action on the kidneys. Aldosterone is a notable example of this category.

3. **Androgens/Estradiols**
- Androgens are sex hormones produced by the gonads (testes in males and ovaries in females). They contribute to secondary sexual characteristics and reproductive functions. Estradiol, a form of estrogen, plays a crucial role in female fertility and reproductive health.

4. **Progestogens**
- Progestogens are synthetic derivatives of natural progestosterone hormones. They are widely used in contraceptives like the combined oral contraceptive pill (COCP) to prevent pregnancy.

These classifications highlight the diverse roles steroid hormones play in maintaining bodily equilibrium and facilitating essential bodily functions.
Sources: JBHNews - https://jbhnews.com - https://jbhnews.com .