Physiology 214 - Endocrinology Lec #1

Role and regulation of glands

50 cards   |   Total Attempts: 185
  

Cards In This Set

Front Back
The ______system generally provides precise, rapid, finely adjusted but short-lived regulation
Nervous system
The______system provides slower, more sustained control over more long-term processes.
Endocrine system
Are the endocrine and nervous systems interrelated?
Yes
Do the endocrine and nervous systems use the same chemical messengers?
Yes
Where do endocrine glands release their secretions?
Internally into extracellular spaces around the cells. From there they can enter the blood stream.
Which type of glands have ducts and which are ductless?
Exocrine glands have ducts (eg. sweat and salivary glands) and endocrine glands are ductless
What are the "classical" endocrine glands?
The hypothalamus, pituitary, thyroids, parathyroids, adrenals, pancreas, and gonads.
What are some of the non-classical endocrine glands?
The gut, liver, kidneys, heart, thymus, brain, and pineal.
True or False: The endocrine glands may contain one or more secretory cell types, each of which may secrete one or more hormones?
True
In what arrangement may the secretory cells be?
Clumps, cords, vesicles, or scattered throughout a tissue
Do endocrines work on near or distant target organs?
Distant organs
What is the definition of a paracrine?
A hormone that is released into the extracellular space, rather than general circulation, that will act on neighboring cells
How do neurocrines work and where are they released from?
They are released from neural tissues into synaptic spaces and act directly on neighboring nerve or muscle cells
A single chemical substance can act as a chemical message in an_________way
In an endocrine, neuroendocrine, paracrine or neurocrine way
Hormone ________a reaction rather than________a reaction
Hormones alter the rate of a reaction rather than initiate a reaction (they rarely initiate a rxn)