Flashcards in Lecture 12/13: Hormones And Hormone Action Deck (14):
Name the two systems that regulate homeostasis
Nervous system and Endocrine system
What are the characteristics of the way the nervous system effects the body?
High-speed electrical signals that provide fast acting responses. E.g. movement of body parts
What are the characteristics of the way the endocrine system effects the body?
Hormones coordinate slower and longer-acting responses. E.g. Stress
Endocrine glands and their characteristics
Secrete endocrine cells (hormones). "Ductless glands" due to secreting hormones straight into the blood
Exocrine glands and their characteristics
Release secretions into a duct which is then carried to site of action.
What organ has both exo and endo crine glands?
Raises the concentration of glucose and fat in the bloodstream. Secreted by the pancreas
Produced by Beta cells. Regulates metabolism of carbs, fats and protein.
Releases hormone near another cell
Has effect on adjacent cells e.g. Insulin and glucagon. Act on skeletal muscle, fat, brain and liver
Direct effect on itself
Proteins that bind to receptors on plasma membrane and activate proliferation and/or differentiation. Stimulate cell division.
Name the classes of hormones
Protein and peptide, Amines and Steroids