Chapter 21
Endocrine System
מהי המערכת האנדוקרינית?
The endocrine system sends hormones—chemical signals—through the bloodstream to target cells—the cells the hormones selectively affect. ...
קולטני הורמונים תוך תאיים
Lipid-soluble hormones diffuse across the plasma and nuclear membrane of target cells to bind to their specific intracellular receptors. These receptors ...
איתות פני שטח התא
Hormones—or any molecule that binds to a receptor, known as a ligand—that are lipid-insoluble (water-soluble) are not able to diffuse across ...
לולאות משוב
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a ...
ציר ההיפותלמוס-בלוטת יותרת המוח
The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. ...
סוגים של הורמונים
Hormones can be classified into three main types based on their chemical structures: steroids, peptides, and amines. Their actions are mediated by the ...
Copyright © 2025 MyJoVE Corporation. All rights reserved