Human Hair Anatomy

Questions and Answers

Match the following parts of hair with their descriptions:

Shaft = Visible part above the skin composed of keratin Root = Anchors the hair to the scalp beneath the skin Follicle = Pocket-like structure from which hair grows Hair bulb = Location where new hair cells are produced

Match the following functions of the scalp with their purposes:

Protective barrier = Guards against UV radiation and physical damage Sebaceous glands = Produce sebum to moisturize hair Density of blood vessels = Supplies nutrients and oxygen to hair follicles Moisturized scalp = Prevents dandruff and ensures healthy hair growth

Match the following conditions with their causes:

Dandruff = Caused by a dry scalp Itching = Result of a dry scalp Hair breakage = Linked to a lack of moisture Healthy hair growth = Supported by a well-moisturized scalp

Match the following components of hair health with their characteristics:

Keratin = Protein that provides strength and flexibility Sebum = Oily substance that protects against dryness Scalp health = Essential for preventing hair disorders Nutrients = Supplied by blood vessels to support follicles Signup and view all the answers

Match the following terms with their definitions:

Follicle = Structure where hair grows Sebaceous glands = Glands that produce an oil for moisture Moisture = Necessary for preventing itching and flaking Blood vessels = Transport nutrients to the hair roots Signup and view all the answers

Match the following hair conditions with their effects:

Dry scalp = Leads to flaking and discomfort Moisturized scalp = Promotes vibrant hair appearance Poor hair health = Results in increased hair breakage Healthy scalp = Contributes to optimal hair growth Signup and view all the answers

Study Notes

Hair Structure

Hair consists of three main components: the shaft, the root, and the follicle.
The hair shaft is the visible part that extends above the skin's surface.
Keratin, a protein, primarily composes the hair shaft, providing strength and flexibility.

Hair Root and Follicle

The hair root is located beneath the skin and secures the hair to the scalp.
Hair follicles are small structures where hair grows and contains the hair bulb, responsible for the production of new hair cells.

Scalp Functions

The scalp acts as a protective barrier against environmental threats like UV radiation and physical damage.
Sebaceous glands in the scalp produce sebum, which is crucial for moisturizing hair and acting as a defense against dryness and bacteria.

Scalp Health and Hair Growth

A well-moisturized scalp contributes to the prevention of dandruff and supports healthy hair growth.
A dry scalp can result in issues like itching, flaking, and hair breakage.
The scalp has a rich supply of blood vessels that provide necessary nutrients and oxygen to hair follicles, essential for maintaining hair health.

Importance of Hair and Scalp Health

Maintaining the health of both hair and scalp is vital for preventing hair disorders.
Healthy hair and scalp contribute to a vibrant appearance and enhance overall protection for the hair system.