Endocrine+System,+Breast+Cancer,+Diabetes+Class+notes+DB

2 types of hormones •	steroid- lipid based •	peptide- protein based

slower than nervous system- go through the blood

hormones •	estrogen •	testosterone •	melotonin •	Seratonin

How a hormone works •	Secreting cell- lets hormone into a blood vessel, hormone travels through the blood, throughout entire body-> target cells have proteins called receptors

Where are hormones produced and secreted? •	In glands

Where are target cells? •	Where are adrenaline target cells? o	Brain, skin •	Where are insulin target cells? o	Muscle cells have insulin receptors •	Where are estrogen target cells? o	The breast

Study- drug can curb breast cancer recurrence •	The most common kind of breast cancer is estrogen driven •	35 % of women have breast cancer that reoccurs •	Letrozole is an estrogen receptor blocker •	Results from the drug rival any other drug tested •	Starting medication late will still benefit •	Causes pre-mature menopause o	Women stop having their period •	The drug is effective a long time after diagnosis •	It dramatically reduces the reoccurance of breast cancer •	It would cost $300 a month

What is Diabetes?