1. Hormones

2. Hormone Classification

3. Steroids Lipids w/ four fused rings
Cholesterol – a steroid with an alcohol
Cholesterol

4. Cholesterol
Progesterone
Estrogen
Testosterone

5. Endocrine System
Pancreas

6. Hormone Uses Hormone Prod-uction Role Other Insulin Pancreas
Decreases blood glucoes level; increases glucose and amino acid uptake and use by cells
Adrenaline
Adrenal Cortex (near kidneys)
Responsible for the flight or fight response; goose bumps, increase heart rate, blood pressure. Affects rate of glucose release from liver
Thyroxine
Thyroid Gland
Regulates metabolism

7. Hormone Uses Sex Hormone Prod-uction Role Other
Androgen (testosterone)
Testes
Development and maintenance of male reproductive system
Estrogen (estradiol)
Ovaries
Same as above for females
Progestin (Progesterone)
Prepare and maintain uterus, help developing embryo

8. Oral Contraceptives
FSH and LH are messengers from the pituitary gland that control the female reproductive cycle.
The secretion of FSH and LH can be controlled by the amount of estrogen and progesterone present
Without FSH and LH, ovulation (release of egg from ovary) cannot occur.
This is how oral contraceptives work – pill is mixture of estrogen and progesterone that work to prevent release of FSH and LH from pituitary gland and thereby prevent ovulation.
No ovulation = no egg in uterus = no baby.