Topic 8

Pineal Gland, Hypothalamus, Pituitary Gland, Thyroid Gland, Adrenal glands, Pancreas, Testes and Ovaries

Receives information about the state of light and secrete melatonin

The link between the nervous system and endocrine systems through its connection with Pituitary gland.

THE MASTER GLAND. Secrets hormones into the bloodstream eg ADH and Growth Hormone

Regulates several processes such as growth, metabolism and development by the releases of thyroxin

Produces adrenaline which regulates metabolism, immune system and blood pressure

Releases hormones into the blood stream eg glucagon and insulin which regulate blood glucose levels

Secretes testosterone

Secretes estrogen and progesterone

Hormones which travel around the body in the blood eg adrenaline and testosterone

Hormones which act on neighboring cells without entering the bloodstream eg glucagon

Hormones are secreted by endocrine glands to regulate and maintain bodily functions Most often release of hormones occur in short burst however some are released over a longer period of time to stimulate permanent change

They are controlled by complex feedback mechanisms which can be influenced by Signals from nervous system, chemical changes in the blood and other hormones like Growth Hormone

Reveres systems in the controlled conditions. Most in human body are

Endocrine System- Produces and secretes the hormones required Central Nervous System- Signals inputs and outputs from the control centre done by nerve impulse or chemical signals

Hypothalamus and Pituitary gland together responsible for homeostasis. The hypothalamus is in control of the Pituitary Gland Neurohormones- From the hypothalamus influence the Pituitary Gland stimulating the gland to work. Also nerve impulses from the hypothalamus. The Pituitary Gland secretes hormones such as ADH that help regulate body functions