Hormones Flashcards
What does chemical signalling allow for? (3)
Regulation of the development and organisation of cells into tissues, control growth and division and coordinate their diverse metabolic activities
What are the three types of signalling?
Autocrine, paracrine and endocrine
What is autocrine signalling?
A hormone binds to a receptor in the same cell
What is paracrine signalling?
Hormones are released and react with the receptors of nearby cells
What is endocrine signalling?
Hormones are secreted into the blood and carried around the body to target cells
What is a hormone?
A chemical that triggers a target response in a cell
What are the three types of hormones?
Peptide hormones, steroid hormones and amino-acid derivatives
How are cells targeted by hormones?
They have specific recepotors
What two things can hormones increase?
Substrate or enzyme concentration
What are the three main types of hormones in vertebrates?
Peptide, lipid and monoamine
What regulates metabolism?
Glucocorticoids
What are the two types of receptor?
Those outside the cell and those inside the cell
