<span>Norepinephrine uses the Second
Messenger System, which means, cells signal to each other what molecules have
been released that will trigger a physiological reaction. </span>
<span>
This phenomenon is activated after the ligand (ion or molecule) is bonded to its receptor
(protein molecule), creating a variation that causes a chain-reaction, that will
finally activate the Second Messenger. The latter will activate intercellular
molecules that will be able to control the cell’s activity. </span>
That is correct, a good description of the HYPODERMIS. Hence many syringes get the name "hypodermic" needles.
<h2>Phylum Anthophyta</h2>
Explanation:
Phylum Anthophyta is the phylum of flowering plants.
Bryophytes are group of seedless non-vascular plant.They are called the amphibians of plant kingdom because to complete their life cycle, they need both water and land.
Anthophyta are dominant group than the bryophyta because:
- They have a well developed vascular system.
- They have their seeds enclosed within fruits and protective sed coat that keep them viable for a long time.
Answer:
The correct answer is: (B) erythropoietin (EPO) – increases white blood cell production.
Explanation:
Erythropoietin is a hormone secreted by the kidney when dealing to cellular hypoxia (low oxygen content on body tissues) to stimulate red blood cell production. This is because red blood cells are the ones that transport oxygen to every tissue in the body.
