Hair Types and Functions Assessment

The video tutorial discusses the dermis and its role in hair production, detailing the three types of hair: lanugo, vellus, and terminal. It explains the protective, sensory, and chemical functions of hair, and describes the structure of hair, including the bulb, root, and shaft. The video also covers the hair follicle and erector pili muscle, and provides a microscopic view of hair structure.

What is the term used for a single hair?

• Peelus

• Vellus

• Pili

• Papilla

Which type of hair is typically found on fetuses and sometimes newborns?

• Lanugo

• Vellus

• Pili

• Terminal

What type of hair is found on most of the body, such as arms and legs?

• Papilla

• Lanugo

• Terminal

• Vellus

Which type of hair is known for being thicker and longer, found on the head and face?

• Lanugo

• Vellus

• Pili

• Terminal

What is one of the primary protective functions of hair on the scalp?

• To disperse chemical signals

• To enhance sensory perception

• To protect from sunburn and injury

• To retain moisture

How does hair contribute to sensory perception?

• By dispersing odors

• By protecting from sunburn

• By moving to detect nearby changes

• By retaining heat

What is the name of the bottom part of the hair where it grows from?

• Root

• Shaft

• Bulb

• Follicle

What is the function of the hair matrix?

• To protect the hair

• To produce keratin

• To disperse chemical signals

• To retain heat

What is the role of the erector pili muscle?

• To produce keratin

• To make hair stand up

• To disperse odors

• To protect the scalp

What happens when the erector pili muscle contracts?

• The hair falls out

• The hair stands erect

• The hair changes color

• The hair grows faster