1. Endocrine System

2. Endocrine System Overview
Controls growth, development, environmental responses
Glands: Major organs of the endocrine system
makes hormones
Hormones: chemical signals that move through blood
Hormones attach to cell receptor
Cause target cells produce proteins

3. Steroid and Non-Steroid Hormones
Naturally produced by the body
Travel through blood
Attach to receptor of target cells
Target cell creates proteins

4. 1988 Summer Olympics: Ben Johnson (Canada) vs. Carl Lewis (USA)

5. YouTube clip: Endocrine system

6. Major Glands Glands create hormones (C) Hypothalamus
Stimulates the pituitary gland to release hormones
Helps controls growth, reproduction, body temp
(B) Pituitary gland
Controls cell growth
Stimulates other glands
(A) Thyroid gland
Regulates metabolism, growth, development
(D) Thymus
Allows WBCs to mature to fight infection

7. Major Glands (E) Adrenal Glands Controls “fight or flight” response
Increases breathing, alertness, blood pressure
(F) Pancreas
Controls glucose level in blood
Gonads: influence sexual development
(H) Testes (males): produces testosterone
(G) Ovaries: produces estrogen, progesterone

8. cold
hormone A
hormone B
hormone C

10. Effects of testosterone

11. hypothalamus
Pituitary gland
Thyroid
thymus
Adrenal glands
pancreas
ovaries
testes

12. Review What are glands and what do they release?
What do steroid and nonsteroid hormones direct cells to create?
Examine the diagram of the endocrine system on slide #9. Practice answering the 8 different glands.
Which gland….
releases insulin to lower blood sugar levels?
increases your alertness and blood pressure?
helps your white blood cells mature?
is located atop your kidneys?
are found in your brain (two answers)?
is considered your body’s thermostat?