Module 5-Hormones Flashcards
(6 cards)
What is the endocrine system made up of?
Endocrine glands-pineal gland, pituitary gland, parathyroid gland, adrenal gland, pancreas, ovary, testis
Define endocrine glands
Secrete hormones which are transported in the blood and bind to their target cell causing a response
Define hormones
Chemical messengers transported in the blood that have widespread and long lasting effects
Examples of hormones
-steroids
-glycoproteins
Function of steroid hormones
Lipid soluble and can diffuse across the cell surface membrane into their target cells to bind to a receptor often located in the cytoplasm
Function of non steroid hormones
-insoluble in lipids and therefore can’t diffuse across the cell surface membrane.
-instead bind to complementary shaped receptors on the cell surface membrane of the target cell
-the binding to the receptor causes a cascade of responses within the cell and that is how the hormone causes a response