Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

20
Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine The Endocrine System System

Transcript of Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Page 1: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Teenagers, Hormones and Shaving Cream…Oh My!

The Endocrine SystemThe Endocrine System

Page 2: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

HormonesHormones are chemical messengers in the body.

Hormones are produced in endocrine glands. The endocrine glands are called ductless because they diffuse hormones directly into the bloodstream as they are produced.

Although hormones go to ALL parts of the body, they only work in organs/locations that have receptors for that specific hormone.

An imbalance of hormones can cause severe mood swings!

Page 3: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

1

2

3.

4

5

6..

7.

8.

The

End

ocrin

e G

land

s

HW Pass Question: What is a Hypophysis Operation?

Page 4: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

The information on the following slides will all be compiled on one

chart that looks like this:

Gland Hormone Function

Page 5: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Hypothalamus

A BIG daddy of endocrine glands!! Secretes

hormones that influence the

pituitary gland

Page 6: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Pituitary Hormones

Thyroid Stimulating Hormone (TSH): stimulates the production of the thyroid hormone thyroxin.

Follicle Stimulating Hormone (FSH): stimulates either the ovaries to produce eggs or the testes to produce sperm.

Growth Hormone (GH): stimulates the growth of bones and cartilage.

Page 7: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Hyper- Hypo-FSH: too many follicles….twins, triplets, etc!!

FHS: too few follicles, hard to conceive baby.

Growth: if in childhood, giantism if in adulthood, agromegaly

Growth: dwarfism

Page 8: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Adrenal Gland Hormones

Adrenaline: Secreted in response to sudden stress. Constricts blood vessels and increases rate of metabolism

Cortisol: Regulates glucose level by converting fat and protein into glucose.

Hyper- Cushing’s Disease: excess fat deposits, puffy face and facial hair

Hypo-Addison’s Disease: Sluggish, weight loss, increased skin pigmentation, stressed

Page 9: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Thyroid HormoneThyroxin: Contains Iodine. Regulates the rate of metabolism for physical and mental development.

Hyper-Causes goiter, bulging eyes, nervousness, irritability, weight loss.

Hypo-In infancy, cretinism (disproportionate dwarf) and mental retardation. In adult, myxedema, weight gain and slow mental functioning

Page 10: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Parathyroid Hormones

Parathormone: Regulates calcium and phosphate metabolism.

Hyper- Hypo-Removal of Calcium from teeth and bones, leaving them brittle.

Tetany-the skeletal muscle are hypertensive and contract violently.

Page 11: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Pancreas Hormones(Islets of Langerhans)

Insulin: Increases the rate of glucose absorption into cells, thus decreasing the blood sugar level.

Hyper-Diabetic shock, convulsions, unconscious, low blood sugar level

Hypo- Diabetes, dehydration, weight loss, high blood sugar level

Glucagon: Converts glycogen (stored in the liver) to glucose in order to raise blood sugar level.

Hyper-

Hypo-

Diabetes, high blood sugar level

Low blood sugar level

Page 12: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Testes

Testosterone: Influences secondary sex characteristics in men, development of the male reproductive system.

Dee

per

voic

e

Fac

ial H

air

Bod

y H

air

Page 13: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Ovaries

Estrogen: Influences secondary sex characteristics and regulates the menstrual cycle.

Progesterone: Helps regulate the menstrual cycle and maintains the uterus during pregnancy.

Page 14: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

FEED BACK LOOPS

FEED FEED BACK BACK

LOOPSLOOPS

Page 15: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Positive & NegativeFeed Back Loops

Positive Feed Back Loop:

An increase in stimulus #1, causes an increase in stimulus #2, which causes a further increase of #1, etc

Negative Feed Back Loop:

An increase in stimulus #1, causes an increase in stimulus #2..that increase in #2, causes a decrease in #1, which then allows a decrease in #2.

Example: Low Thyroxin causes higher TSH, higher TSH causes higher Thyroxin, higher Thyroxin causes lower TSH, lower TSH causes lower thyroxin.

Page 16: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

The Menstrual CycleThe Menstrual Cycle …hold on to your socks for some wild fun!

The menstrual cycle is an example of a negative feed back loop.

1. FSH causes a follicle to mature.

2. Follicle produces Estrogen. Estrogen causes uterine lining to thicken.

3. Increase in Estrogen and a decrease in FSH causes an increase in Lutenizing Hormone, which causes ovulation (release of the egg).

4. The increase of LH causes the Corpus Luteum (the empty follicle) to produce progesterone which maintains the uterine lining.

5. If no pregnancy, FSH increases again and decreases progesterone. This results in menstruation.

Page 17: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.

Diabetes

Type I Diabetes:

Insulin Dependent

Your body does not make enough (or any) insulin

Type II Diabetes:

Non-Insulin Dependent

Your body does not know what to do with the insulin it makes.

Page 18: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.
Page 19: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.
Page 20: Teenagers, Hormones and Shaving Cream…Oh My! The Endocrine System.