Flashcards in Endocrine System Deck (21):
What is the super system of the body?
Nervous system + Endocrine system together
The nervous system utilizes ________ to control body functions, while the endocrine system utilizes _________ to control body functions.
Neurotransmitters perform their action ________ to site of release.
Hormones usually perform their action _________ from their site of release
Nervous system acts upon _________.
muscle cells, glands and other neurons
The endocrine system acts upon ________.
virtually all cells of the body
In the nervous system, action typically occurs within _________ of neurotransmitter release.
In the endocrine system, action can take ________ to occur after release of hormone.
seconds to days
Duration of endocrine system action is _______ than duration of nervous system action.
What are tropic hormones?
Hormones that trigger the release of other hormones
List functions of hormones.
Help regulate - chemical composition & volume of internal environment
- metabolism and energy balance
- contraction of smooth & cardiac muscle fibers
- glandular secretions
- some immune system activities
Control growth and development
Regulate operation of reproductive systems
Help establish circadian rhythms
The excess or deficiency of hormones may lead to __________ of hormone receptors.
Hormones can be divided into what chemical classes?
Lipid-soluble hormones and water-soluble hormones
List 3 lipid-soluble hormones
Steroid hormones, thyroid hormones, Nitrous Oxide
List 3 water-soluble hormones
Eicosanoid hormones, amine hormones, peptide hormones
Water-soluble hormones bind to receptors on the _________
Lipid-soluble hormones are transported in the blood by ______ and bind to receptors on ___________.
What is the permissive effect of hormones?
The action of a 2nd hormone is required for 1st hormone to take effect
What is the synergistic effect of hormones?
the sum of the actions of the 2 hormones is greater than either hormone individually
What is the antagonistic effect of hormones?
one hormone opposes the actions of another