The Endocrine System

Adrenal Glands
The body contains two adrenal glands which are triangular glands located on top of each kidney. Each is made up of two parts; the outer region, called the cortex and the inner region, called the medulla. The two parts act as seperate glands.

The cortex secretes hormones that affect the body's metabolism, chemicals in the blood, and body characteristics such as hairiness and body shape. It secretes the hydrocortisone hormone which controls the body's use of fats, proteins, and carbohydrates. It also produces corticosterone, aldosterone hormone and androgenic steroids.

The medulla produces two hormones which help the body react to physical and emotional stress. One of its hormones is adrenaline; this hormone increases the heart rate, increases blood flow to the muscles and brain, and helps with conversion of glycogen to glucose in the liver to provide the additional energy required in stressful conditions. The other hormone is noradrenaline, which helps increase blood pressure.

The Endocrine System Pituitary Gland Thyroid/Parathyroid Glands Thymus Adrenal Glands Pancreas Gonads (Ovaries) Gonads (Testes)