Exploring the Functions of Your Skin

What percentage of your physical weight is made up by your skin?

• 10%

• 25%

• 16%

• 20%

Which of the following is NOT part of the integumentary system?

• Specialized glands

• Bones

• Nails

• Hair

What is the main function of Merkel cells in the skin?

• Detecting temperature

• Sensing pressure

• Secreting sebum

• Producing sweat

How often are keratinocytes in the epidermis completely replaced?

• Every six weeks

• Every four weeks

• Every two weeks

• Every week

Tags

NGSS.HS-LS1-4

What do Langerhans cells do when they detect harmful microbes?

• Cause goosebumps

• Secrete sebum

• Communicate with T-cells

• Produce sweat

What substance do sebaceous glands secrete onto the skin's surface?

• Collagen

• Keratin

• Sebum

• Sweat

How does the skin help regulate body temperature when it is too warm?

• Increasing sebum production

• Producing more keratin

• Expanding blood vessels

• Constricting blood vessels

Tags

NGSS.MS-LS1-3

What phenomenon occurs when tiny muscles cause hair to stand upright?

• Sebum secretion

• Sunburn

• Sweating

• Goosebumps

Approximately how many hair follicles does the average human have?

• 7 million

• 5 million

• 3 million

• 1 million

What is the primary function of hair on the scalp?

• To regulate temperature

• To shield from sunburn

• To produce sebum

• To sense pressure