1. TOPIC: ENDOCRINE SYSTEM
AIM: How do the organs of the Endocrine System aid in the maintenance of Homeostasis?
Do Now:
1. Define the Life Process of REGULATION?
Compare the Life Process of Regulation to a Cell Organelle.

2. What is the Purpose/ Function of the Endocrine System?
A System of ductless glands located around the body that produce chemicals called Hormones that travel to target organs to regulate a body activity.

3. 1. Ductless: No direct Passageway
VOCABULARY
3. Target Area: Specific area or organ of the body that a Hormone will travel to and regulate a body activity.
1. Ductless: No direct Passageway
2. Hormone: Chemical secreted by an Endocrine Gland that is Specific to a target organ and will regulate some activity associated with that organ. Hormones travel through the BLOOD.

5. How Were Hormones Discovered?
Video Clips for Biology!

6. The Endocrine System A. Introduction Main endocrine glands
thyroid gland
pancreas (islets)
testes
pituitary gland
thymus gland
adrenal glands
ovaries
hypothalamus
Main endocrine glands
Pituitary gland
Thyroid gland
Parathyroid glands
Adrenal glands
Pancreatic islets
Gonads

7. Pituitary gland: Pea shaped gland located at the base of the Brain.
The Endocrine System
How does the structure and function of the Pituitary Gland contribute to maintaining Homeostasis?
Pituitary gland: Pea shaped gland located at the base of the Brain.
2. Controlled by the Hypothalamus (Part of the Brain- This is what links the Nervous and Endocrine System)
3. Called the “Master Gland” because some of the Hormones it secretes control the secretions of other Endocrine Glands.

8. Hormones produced by the Pituitary Gland:
1.Growth hormone (GH)
2. Thyroid-stimulating hormone (TSH)
3. Adrenocorticotrophic hormone (ACTH)
4. Follicle-stimulating hormone (FSH)
5. Luteinizing hormone (LH)
6. Prolactin (PRL)

9. Promotes the normal development of Muscles and Bones.
Growth Hormone:
Promotes the normal development of Muscles and Bones.
FSH: Follicle Stimulating Hormone
Stimulates a follicle in the ovaries to mature an egg cell.
Oxytocin: Stimulates contraction of the uterus during labor.
TSH: Thyroid Stimulating Hormone:
Stimulates the Thyroid gland to produce its hormone.

10. What Happens if too much or too little of a Hormone is secreted?
Hypersecretion: Too much
Hyposecretion: Too Little
YouTube - Endocrine System and Hormones

11. THYROID GLAND
How Does the Thyroid Gland aid in the maintenance of Homeostasis?
Location: Neck region
Hormone Produced: Thyroxin
Thyroxin regulates overall Metabolism.
Parathyroid glands: embedded in thyroid. Produce the Hormone Parathormone: regulates metabolism of calcium

12. How do the Adrenal glands function in the Endocrine System?
thyroid gland
pancreas (islets)
testes
pituitary gland
thymus gland
adrenal glands
ovaries
Secrete the Hormone Adrenalin
Fight or Flight Mechanism
Increases heart rate, breathing rate, releases glucose into the blood for a quick burst of energy – super human strength.

13. How do these hormones function?
PANCREAS
How does the Pancreas function as an Endocrine Gland to aid in the maintenance of homeostasis?
Contains Special cells in a region called the ISLETS OF LANGHERANS secrete the Hormones Insulin and Glucagon.
How do these hormones function?
Insulin lowers Blood Sugar and
Glucagon Raises Blood Sugar levels

14. Homework: Text p. 632-633 Answer Q’s 24-30 & 34
Topic: Endocrine System Aim: How do the Endocrine glands aid in the maintenance of homeostasis?
Do Now: Acrostic Poem for HORMONE
Homework: Text p Answer Q’s & 34

15. thyroid gland
pancreas (islets)
testes
pituitary gland
thymus gland
adrenal glands
Ovaries

17. How are the levels of Hormones controlled?
Video Clips for Biology!
Feedback Mechanisms

18. How do these hormones function?
PANCREAS
How does the Pancreas function as an Endocrine Gland to aid in the maintenance of homeostasis?
Contains Special cells in a region called the ISLETS OF LANGHERANS secrete the Hormones Insulin and Glucagon.
How do these hormones function?
Insulin lowers Blood Sugar and
Glucagon Raises Blood Sugar levels