The Endocrine System

Sports Training and Physiology

Kociuba

http://kidshealth.org/PageManager.jsp?lic=1&article_set=59297&cat_id=20607

Endo = within Krino = to separate

Endocrine System - Objectives Recognize all the structures of the Endocrine

System Recall all the major functions of the

Endocrine System Explain the process that your body goes

through to use the endocrine system Describe how the endocrine system changes

as you age

Structure/Function of the System Composed of Endocrine Glands

Ductless glands that secrete chemical messengers into the body

These Chemicals are called Hormones

The Structures of the Endocrine System

Endocrine Glands

Pituitary Gland

Hypothalamus

Thyroid Glands

Parathyroid Glands

Adrenal Gland

Pancreas

Pineal Secretes hormones from

the brain to the reproductive glands

Testes/Ovaries

Functions of the glands vary depending upon where they are located.

Pituitary Gland Hypothalamus Master Gland Controls Growth

Over all of the body Regulates body’s

functions as well Digestion

Regulates secretion of the Pituitary Gland Like it’s body guard

CNS regulates this gland

**Both of these glands work together with the NS to regulate and help the body with homeostasis and any changes that happen…

ThyroidParathyroid Consists of 2 lobes Largest ES gland Increases metabolic

rate Decreases bone

deterioration

Found in the Thyroid Regulates what is in

the blood Increases bone

breakdown

Adrenal Gland

Create the fight or flight

response in your body

Major effects on the body for this response include:

Increased breakdown of glucose for energy Increased heart rate Vasodilatation of the blood vessels Increased metabolic rate of several tissues

Pancreas

Surrounded by a loop of the small intestine Regulates insulin and glucose breakdown in

the body Glucose is “sugar” that your body in turn uses for

energy Insulin breaks down glucose into what we use as

energy

Endocrine System and Aging Gradual decrease of some hormones

Growth Reproductive

Men decrease Women experience menopause

Some decreases are due to decreasing physical activity in elderly

No age related decrease in blood glucose regulation.