1. Endocrine System Notes
Upload 9.25 Endocrine system notes

2. Anatomy Physiology
-endocrine glands  any tissue or organ that secretes hormones
directly into the bloodstream 
 Do you know the names of any endocrine glands?
-hormones    chemicals that affect the metabolism or
behavior of a cell
 Do you remember what is meant by "metabolism”?
-target cell  a cell having a specific receptor that reacts
with a specific hormone
 Can you think of the names of any specific hormones?

3. Endocrine Glands Matching: Adrenal Hypothalmus Ovaries Pancreas
Parathyroid
Pineal Gland
Pituitary Gland
Testes
Thymus
Thyroid 7 1 9 8 4 2 3 10 6 5

4. Releases hormones to the pituitary Secrete testosterone
Adrenal Hypothalmus Ovaries Pancreas Parathyroid Pineal Gland Pituitary Gland Testes Thymus Thyroid
Releases hormones to the pituitary
Secrete testosterone
Secretes insulin
Master endocrine gland
Metabolizes carbs, proteins, and lipids
Maturation site for immune system cells
Secretes adrenalin
Secrete estrogen
Secretes melatonin (regulates sleep patterns)
Controls the amount of calcium in the blood

5. Diseases of the Endocrine System
1. Produce too little of a hormone: Addison's disease- fatigue, upset stomach, dehydration, skin hyperpigmentation due to underproduction of cortisol by the adrenal glands

6. 2. Produce too much of a hormone: Hyperthyroidism- weight loss, fast heart rate, nervousness due to overproduction of thyroid hormone. Typically caused by the autoimmune disorder- Graves Disease.

7. How The Endocrine System Works
1. The nervous system causes a hormone to be released. Fight or Flight Example: Hypothalamus causes the release of adrenalin

8. 2. The hormone is shuttled through the blood stream to a target cell
2. The hormone is shuttled through the blood stream to a target cell. *A hormone’s target cells has receptors that other cells lack.

9. 3. Hormones stimulate changes in the target cell
3. Hormones stimulate changes in the target cell. Fight or Flight Example: What cells would be targeted? Cardiac muscle cells What changes would take place? Increased heart rate to supply more oxygen to muscles.

10. 4. Negative feedback system control when the endocrine gland should be inhibited or begin to secrete again. Fight or Flight Example: Heart rate decreases
Watch this animation

11. What hormone is released when you are thirsty?
Antidiuretic
What are the target cells?
Kidneys (and blood vessels).
What changes take place in the target cells?
Kidneys reabsorb (retain) more water. (Blood vessels constrict.)
This is an example of
( negative / positive )feedback.

12. Let’s Compare (use the word bank)
Neurons/Glia
Epithelial
Neurotransmitter
Hormone
Receptors on Postsynaptic neuron
Receptors on Target Cell
milliseconds
Seconds to hours
Seconds to days
milliseconds

13. Understanding with pictures
Word Bank
Epithelial
Hormone
Neuron
Neurotransmitter
Postsynaptic
Target

14. Homework