Hair Strand Anatomy

The natural appearance of hair is attributed to the shape of the hair. Learn vocabulary terms and more with flashcards games and other study tools.

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The innermost region the medulla is not always present and is an open unstructured region.

Hair strand anatomy. Hair follicles are surrounded by the dermis but the cells are part of the epidermis and are separated from the dermis by basal lamina layer. The hair shaft consists of a cortex and cuticle cells and a medulla for some types of hairs. The follicle and the hair shaft.

Cuticle cortex and medulla. Straight hair has a mostly circular circumference. Pigment granules can be found in small gaps between these cells.

The highly structural and organized cortex or second of three layers of the hair is the primary source of mechanical strength and water uptake. The hair bulb forms the base of the hair follicle. Cuticle a narrow band of epidermis extending from the nail wall onto the nail surface.

Each strand of hair is made up of the medulla cortex and cuticle. Start studying anatomy chapter 4 integumentary system. Surrounding the medulla is the cortex elongated cells which form the main fibrous structure and strength of the hair.

It is present only in large thick hairs like the ones on our scalps. The innermost layer is called the medulla. As the cortex cells move outwards toward the external layer of hair they become thin and scale like forming the cuticle of the hair strand.

The flatter the shaft the curlier the hair. The amount of natural curl that a hair has is determined by its cross sectional shape. Hair is made of a tough protein called keratin.

In the hair bulb living cells divide and grow. Flexible strand of dead keratinized cells found projecting outside from the epidermis. Hair shaft sebaceous gland arrector pili muscle hair follicle sweat gland sweat gland duct pore of sweat gland duct.

The follicle is the essential unit for the generation of hair. Hair is a derivative of the epidermis and consists of two distinct parts. Anatomy of human hair shaft consists of 3 layers.

Hair follicle has a continuous growth and rest sequence named hair cycle. The more circular the hair shaft the straighter the hair. A hair follicle anchors each hair into the skin.

Strands of hair originate from the base of the downward extension of living epithelial cells into the dermis that is called the hair follicle. Strands of curly or kinky hair are flat.

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