The video explains keratin, a protein found in skin, nails, and animal features like hooves and feathers. It describes the three layers of hair: cuticle, cortex, and medula. Additionally, it discusses how hair grows faster in summer due to increased blood flow to the scalp, influenced by warmer weather.

What is keratin, and where can it be found?

• A carbohydrate found in plants

• A mineral found in rocks

• A protein found in skin, nails, and animal features

• A type of vitamin found in fruits

Which of the following is NOT a layer of hair?

• Epidermis

• Medulla

• Cortex

• Cuticle

What is the function of the cortex in hair?

• It provides color and strength to the hair

• It protects the hair from damage

• It keeps the hair hydrated

• It is responsible for hair growth

Why does hair grow faster in the summer?

• Due to more sunlight exposure

• Because of increased humidity

• Because of increased blood flow to the scalp

• Due to less stress

What happens to blood flow during colder weather?

• It increases to the scalp

• It decreases to the scalp

• It remains the same

• It increases to the skin