In contrast to white fat, brown fat is richly vascularized and has numerous unmyelinated nerves which provide sympathetic stimulation to the adipocytes.

• 和白色脂肪组织比较起来，棕色组织有充分的血管浸润，而且有许多无髓鞘的神经提供交感神经对脂肪细胞的刺激。