Fibromuscular dysplasia, which affects young women, can cause the walls of the large- and medium-sized arteries to thicken.

像是肌发育不良，多见女性，可能会导致大、中型动脉血管壁变厚。

ANATOMY The eyelids are two fibromuscular structures: outer layer containing skin, muscle as well as dense fibrous tissue and an inner transparent layer called conjunctiva that close in front of the eyeball, hence protecting it.

外层包括皮肤、肌肉和密集的织，内层叫做结膜的透明层在眼球前面闭合，从而保护眼球。