Hair Follicle Anatomy: Structure, layers, keratins, mutations

#skin #hair #haircycle #cornification #keratinization #hairfall #skindiseases #skincondition #skincare #haircare #hairanatomy

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Introduction - 01:36
Pilosebaceous Unit - 04:10
Terminal v/s Vellus v/s Lanugo Hair - 05:50
Hair Anatomy - 07:31
Hair Anatomy: Longitudinal Section - 07:41
Hair Anatomy: Layers - 09:39
Hair Anatomy: Horizontal Section - 10:13
Outer Root Sheath - 11:36
Inner Root Sheath [IRS] - 14:40
IRS: Companion Layer - 15:34
IRS: Huxley's Layer - 16:55
IRS: Henle's Layer - 19:00
Hair Shaft - 19:54
Hair Shaft: Cuticle - 22:35
Hair Shaft: Cortex - 23:44
Hair Shaft: Medulla - 24:41
Dermal Papillae - 25:09
Matrixial Cells - 27:48
Peri-follicular Sheath - 28:39
Hair Follicle: Recap - 31:06
Functions - 33:47
Further Reading - 35:48
Membership to the Channel - 36:27
Happy New Year 2025 - 37:40
End - 38:22

Further Reading:

1. Chapter 2 – Structure and Function of Skin – McGrath JA et al. In: Rooks Textbook of Dermatology, 10ed. Pg-2.1, Griffiths C et al.

2. Chapter 68 – Biology of Hair and Nail. In: Bolognia’s Dermatology, 5ed. Pg-1155, Wang ECE et al

3. Chapter 7 – Biology of Hair Follicles. In: Fitzpatrick’s Dermatology, 9ed. Pg-89, Cotsarelis L et al.