What are the two main parts of hair quizlet?

What are the two main parts of hair quizlet?

Hair cuticle, is the outermost layer of the hair. The cortex is the middle layer of the hair.

What two structures make up hair?

Hair is made up of two separate structures. The hair follicle is the part below the skin, and the hair shaft is what you see above your skin.

What is the main component of hair?

keratin
Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. The hair bulb forms the base of the hair follicle. In the hair bulb, living cells divide and grow to build the hair shaft.

What are the 5 main structures of the hair?

Name and describe the five main structures of the hair root.

• Hair Follicle.
• Hair Bulb.
• Dermal Papilla.
• Arrector Pili Muscle.
• Sebaceous (Oil) Glands.

What are the 2 layers of the hair follicle?

Each hair shaft is made up of two or three layers: the cuticle, the cortex, and sometimes the medulla. The cuticle is the outermost layer. Made of flattened cells that overlap like the tiles on a terra-cotta roof, the cuticle protects the inside of the hair shaft from damage.

What is structure of the hair?

Each hair has a hair shaft and a hair root. The shaft is the visible part of the hair that sticks out of the skin. The hair root is in the skin and extends down to the deeper layers of the skin. It is surrounded by the hair follicle (a sheath of skin and connective tissue), which is also connected to a sebaceous gland.

What is the basic structure of hair?

What are 2 main parts of a hair?

The Innermost Layer: This is called the medulla. Depending on the type of hair,the medulla isn’t always present.

The Middle Layer: This is called the cortex,which makes up the majority of the hair shaft.

The Outermost Layer: This is called the cuticle,which is formed by tightly packed scales in an overlapping structure that resemble roof shingles.

What are the components of hair?

Hair is essentially composed of keratin, a molecule with a helical structure. Hair also contains water (12 to 15 %) and traces of mineral elements (calcium, cadmium, chromium, copper, zinc, iron and silicon).

What are the structures of hair?

Basic physical structure of hair. The basic physical structure of the hair: cortex, cuticle and medulla. The cortex is the main component of the hair and consists of moisture, melanin (pigment) and other elements. The cuticle is a chemically ‘resistant’ region surrounding the cortex in hair fibers.

What is the function of human hair?

Insulation. The primary function of human hair is to insulate the human body. Hair does this in two ways: it serves as a physical barrier between external cold air and the skin, and it also traps warm air in between the skin and the hair, keeping the body warmer.