18 Questions
What is one location where different types of hormones can bind for their actions to initiate?
On the surface of the cell membrane
Which type of effect among hormones involves one hormone enhancing the responsiveness of a target organ to another hormone?
Permissive effect
Which term describes the mechanism in which one hormone opposes the effects of another hormone?
Antagonist effects
What is one of the roles of hormones in the endocrine system?
Enhance or inhibit functions of the target organs or glands
In hormonal action, what is the first step that hormones need to take at the target cell?
Bind to specific receptors at the target cell
What type of effect involves two hormones acting on different stages of a physiological procedure?
Complementary effects
What is the physiological effect of growth hormone on protein metabolism?
Increase rate of protein synthesis
Which of the following tissues is NOT stimulated for growth by growth hormone?
Pancreas
What is the result of hypersecretion of growth hormone during adulthood?
Acromegaly
Which type of hormones regulate the concentration of second messengers in the cytoplasm?
Peptide hormones
Where do hydrophilic hormones bind their receptors?
Cell membrane
Which hormone acts as a mediator in the liver for the growth hormone effect?
Somatomedins (insulin-like growth factor)
What is the effect of growth hormone on fat metabolism?
Cause release of fatty acids from adipose tissue
What is the main site of action for steroid hormones?
Nucleus
How does growth hormone affect RNA translation and nuclear transcription?
Enhances RNA translation and transcription
Which pituitary hormone stimulates the adrenal cortex to produce cortisol?
ACTH
What is the function of vasopressin and oxytocin?
Control water balance and uterine contractions
Which hormones act mainly on the genetic machinery of the cell?
Steroid hormones
Test your knowledge on the receptors of the endocrine system and the transmission of signals through hormones. Learn about the specificity of receptors, signal transmission, biological efficiency, and signal amplification.
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