Mixing
毛囊
 | 本条目需要擴充。（2011年6月19日） |
毛囊的结构示意图
人类体表的毛发
毛囊是用来生长毛发的皮肤器官，分布在除了手掌、脚掌和嘴唇以外的全身体表皮肤上。毛囊与皮脂腺相连，毛发密度越高的地方皮脂腺的数目就越多。毛囊还与一小束肌肉纤维相连，称作立毛肌，用来使毛发能更加直立，并让毛囊稍微突出于皮肤表面。
毛发的生长和脱落有周期性：被分为生长期（anagen）、退行期（catagen）及休止期（telogen）。干细胞被发现存在于毛囊中，被认为与毛发的再生有关。
Information security
This article is part of a series on Information security Related security categories Internet security Cyberwarfare Computer security Mobile security Network security Threats Computer crime Vulnerability Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Defenses Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP) v t e Information security , sometimes shortened to InfoSec , is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information. Th
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