The Endocrine System Flashcards
Glands, hormones, and feedback loops
Endocrine system is composed of ______ that produce and secrete _______.
organs; hormones
These organs preform a ________ _______ , Mainly ______.
Secretory function; glands
What are the two types of glands?
Endocrine and Exocrine
Exocrine: Secrete products in _____.
ducts
Exocrine: ducts transport to ____ ________, spaces within ______, or ____ ________.
body cavities; organs; body surfaces
Endocrine glands are also known as?
Ductless glands
Endocrine: Secrete products into ______________ space surrounding ________ cells.
extracellular; secretory
Endocrine: Hormones enter ___________.
The Bloodstream
What are 6 examples of Endocrine glands ?
Pituitary, thyroid, adrenal, pancreas, parathyroid, and gonads.
What are Hormones?
Chemical units produced by endocrine glands.
What is extension?
The means by which endocrine glands provide control of bodily activities
Hormones are released in _____ quantities and are extremely _____.
Small; potent
What are Secretory cells?
cells that release hormones into extracellular space and find their way by diffusion into the bloodstream.
What is a target cell?
A specific cell that the hormone goes to.
Target cells: Contain special proteins in the _______ _________. They serve as ________.
plasma membrane; receptors.
What is Feedback control?
How a gland “knows” how much hormones to produce/release.
What is Negative Feedback?
Feedback loop that controls the amount of hormones by providing response in opposite direction of stimulus.
What is a Positive Feedback?
Feedback loop that provides response in the same direction as stimulus.
Negative Feedback: __________ hormone is affected.
Accelerated
Negative Feedback: ______ hormone of _____ _____ activity is stimulated.
slowing; same body.
Positive Feedback: tells gland to ________ its release of hormones.
increase.
In positive feedback, _____ __________ are stimulated.
more responses
Name two Minor Role Endocrine glands. (BONUS)
Pineal and Thymus Gland
