Hair Flashcards
What are the three main layers of a hair strand?
The three main layers are the medulla, cortex, and cuticle.
What are the four phases of the hair growth cycle?
The four phases are Anagen (growth phase), Catagen (regression phase), Telogen (resting phase), and Exogen (shedding phase).
What is the primary protein found in hair, and what are its four main amino acids?
The primary protein is keratin, and its four main amino acids are cysteine, lysine, arginine, and methionine.
What are the two types of melanin responsible for hair colour?
The two types of melanin are eumelanin (brown and black pigments) and pheomelanin (red and lighter pigments).
List at least three functions of hair.
Hair functions include sensation, protection from physical trauma, and regulation of body temperature.
What are the four main hair type categories according to Andre Walker’s system?
The four main types are Type 1 (Straight hair), Type 2 (Wavy hair), Type 3 (Curly hair), and Type 4 (Kinky hair).
Name three factors that can influence the hair growth cycle.
Three factors are ethnic origin, age, and overall health of the individual.
What determines the curliness of hair?
The shape of the hair follicle determines how curly the hair is; circular follicles produce straight hair, while oval follicles produce curlier hair.
What can hair analysis reveal about a person’s health?
Hair analysis can detect details about health, habits, and deficiencies in vitamins and minerals.
How can diet impact hair condition?
A diet lacking in essential nutrients like proteins, iron, zinc, and vitamins can lead to dry, brittle hair, poor hair growth, and even hair loss.
