In
general, hormones that bind to plasma membrane receptors cannot pass through
cell membranes.
<span>
Membrane
receptors or cell surface receptors are receptors that are located in the
membranes of cells and usually are integral membrane proteins. The
extracellular molecules like hormones, neurotransmitters, cytokines, growth
factors are ligands that induce changes (signal cascade) within the cell.</span>
Answer:
immune system
An immune system of a humans body is something that affects the processes of the human body. It is how there is some form of resistance in the human body. When some things get compromised in regard to health, hygiene and activities, that leads to resistance issues in the human body.
I read somewhere that it was tobacco use.