Histology of Hair Follicles Quiz

What are the normal hairs that make up most of the hairs on the scalp called?

• Vellus hairs

• Catagen hairs

• Anagen hairs

• Telogen hairs

Where are the roots of the hair situated in the scalp?

• In the dermis

• In the subcutaneous fat

• In the sebaceous glands

• In the epidermis

What is the name of the specialized mesenchymal spindle cells in the hair papilla?

• Chondrocytes

• Fibroblasts

• Keratinocytes

• Melanocytes

What is the name of the layer surrounding the hair shaft that is filled with glycogen?

• Outer root sheath

• Adventitia

• Medulla

• Inner root sheath

What gives the hair its pigment?

• Fibroblasts

• Keratinocytes

• Melanocytes

• Sebaceous glands

What is the portion of the hair follicle where the sebaceous gland drains into called?

• Isthmus

• Infundibulum

• Adventitia

• Bulb

What is the name of the bright red granules found in the inner root sheath?

• Sebum granules

• Keratin granules

• Melanin granules

• Trichohyaline granules

What is the portion of the hair follicle that looks just like the surface of the epidermis?

• Infundibulum

• Isthmus

• Adventitia

• Bulb

What is the name of the layer that eventually develops a cuticle, henley layer, and huxley layer?

• Inner root sheath

• Outer root sheath

• Adventitia

• Medulla

What is the name of the cells that are actively dividing and responsible for hair growth?

• Melanocytes

• Fibroblasts

• Keratinocytes

• Matrical cells