When your body gets overheated. This is a negative feedback loop. The arteries/veins will dilate letting more blood pass through. Your face tends to get red because there is more blood flow towards the surface in an effort to cool off. This is also why you sweat.
<span>the study of living organisms, divided into many specialized
fields that cover their morphology, physiology, anatomy, behavior,
origin, and distribution.</span>
Lymphocytes is the answer.
The areola is the most common initial site to visualize peau d'orange skin.
Hope this helps :)
