Endocrine system Flashcards
(23 cards)
Ductless and secrete Hormones into the Internal Environment: Body Fluids or Blood
Endocrine Glands
Secrete into Ducts or Tubes onto Epithelial Surfaces
Examples:
Lacrimal Glands that release Tears
Sweat Glands that release Perspiration
Exocrine Glands
What enters the Interstitial Fluid and effect Nearby Cells?
Paracrine Secretions
What acts on the Same Cell that secreted it?
Autocrine Secretions
Functions of the Endocrine System include?
Regulate metabolic processes
Control rates of some chemical reactions
Aid in transporting substances through membranes
Help regulate water and electrolyte balance, and blood pressure
Play important roles in Reproduction, Development and Growth
Biochemical secreted by a Cell that affects the functions of another Cell is called what?
Hormone
A Cell that possesses specific Receptors for a particular Hormone Molecule is called?
A target cell
Amines, Peptides, Proteins or Glycoproteins that are all synthesized from Amino Acids are considered?
Nonsteroid Hormones
Steroid hormones are derived from _____________.
Cholesterol
Estrogens, Testosterone, Cortisol and Aldosterone are examples of?
Steroid Hormones
The Pineal Gland secretes the Hormone ____________?
Melatonin
Hormones are composed of _______________?
Organic Compounds
2nd Messenger of Non-Steroid hormones is?
Cyclic AMP
The resulting Hormone-Receptor Complex activates (Membrane Protein) called the _________________.
G Protein
What controls the Anterior Pituitary Gland’s release of Tropic Hormones?
Hypothalamus
What controls the activities of the Posterior Pituitary Gland?
Hypothalamus
Gland in the mediastinum and lies just beneath the Sternum?
Thymus
The Pineal Gland secretes what Hormone?
Melatonin
What produces steroid hormones?
Adrenal Cortex
The Anterior Pituitary Gland is primarily composed of
Grandular Epithelial cells
Cyclic AMP is referred to as the ______________ and results in activation of another set of Enzymes called ______________.
Second Messanger; Protein Kinases
When blood glucose levels increase, the Pancreas secretes what?
Insulin
When the blood Glucose levels decrease, the Pancreas secretes what?
Glucagon