ENDOCRINE PRACTICE QUIZ Flashcards
A major difference between neurotransmitters and hormones is that hormones reach their destination via
Blood
Where are receptors for steroid hormones commonly located
Inside the target cell
For a hormone to activate a target cell, the target cell must possess
Receptor
When the pancreas releases insulin in direct response to blood glucose, this is an example of what type of stimulus
Humoral
When an infant suckles at his mother’s breast, the mother’s neurohypophysis releases oxytocin, this is an example of what type of stimulus
Neural
When the ovaries secrete estrogen in response to the hormone GnRH, this is an example of what type of stimulus
Hormonal
How are blood levels of hormones kept within very narrow ranges
Negative feedback
Which hormone is produced in the hypothalamus?
ADH
Secretions from the corticotrophs activate cells of the __________, while secretions from the gonadotrophs affect cells of the __________.
Adrenal cortex; gonads
A patient is displaying high volumes of urine output and severe dehydration. The most likely cause
Hyposecretion of ADH
What is an indirect effect of PTH?
Increasing calcium absorption in the intestines
An adrenal hormone responsible for maintaining appropriate blood sodium levels
Aldosterone
During times of stress, elevated levels of what substance occurs
Cortisol
Along with the sympathetic nervous system, what is the primary mediator of acute stress
Adrenal medulla
What secretion maintains circadian rhythm
Melatonin
