RT Book, Section A1 Hordinsky, Maria K. A2 Soutor, Carol A2 Hordinsky, Maria K. SR Print(0) ID 1190940258 T1 Skin Diseases of the Scalp T2 Clinical Dermatology: Diagnosis and Management of Common Disorders, 2e YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264257379 LK accessmedicine.mhmedical.com/content.aspx?aid=1190940258 RD 2024/03/28 AB The scalp is characterized by a high density of sweat glands and pilosebaceous units consisting of hair follicles, sebaceous glands, and arrector pili muscles. It is estimated that there are some 100,000 follicles on the scalp, so this also means that there are about 100,000 sebaceous glands and associated arrector pili muscles.