At a Glance

Life on Earth Chapter 25 Chemical Control of the Human Body: The Endocrine System
At a Glance

Hormone Structure and Function: Hormones have a variety of chemical structures.
Hormones function by binding to specific receptors on target cells.
Hormones are regulated by feedback mechanisms.

The Human Endocrine System
Mammals have both exocrine and endocrine glands.
The hypothalamus controls the secretions of the pituitary gland.
The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; Hormones function by binding to specific receptors on target cells.
Hormones are regulated by feedback mechanisms.

The Human Endocrine System
Mammals have both exocrine and endocrine glands.
The hypothalamus controls the secretions of the pituitary gland.
The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; Hormones are regulated by feedback mechanisms.

The Human Endocrine System
Mammals have both exocrine and endocrine glands.
The hypothalamus controls the secretions of the pituitary gland.
The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones
The Human Endocrine System: Mammals have both exocrine and endocrine glands.
The hypothalamus controls the secretions of the pituitary gland.
The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; The hypothalamus controls the secretions of the pituitary gland.
The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; The thyroid and parathyroid glands are located in the neck.
The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; The pancreas is both an exocrine and an endocrine gland.
The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; The sex organs secrete steroid hormones.
The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; The adrenal glands have two parts that secrete different hormones.
Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; Many types of cells produce prostaglandins.
Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones; Other endocrine organs include the pineal gland, thymus, kidneys, heart, and digestive tract.

Evolutionary Connections: The Evolution of Hormones
Evolutionary Connections: The Evolution of Hormones

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