Chapter 7 (9th Grade)

Albino people's skin is lighter because....

• Lack or absence of melanin
• Excessive production of melanin
• Genetic mutation
• Exposure to sunlight

What are the three kinds of teeth that humans have?

• incisors, canines, and premolars
• incisors, premolars, and molars
• incisors, canines, and molars
• premolars, canines, and molars

What part of the eye helps you see colors?

• retina
• cornea
• iris
• lens

What is the outer layer of our teeth?

• dentin
• cementum
• pulp
• enamel

If your gums bleed easily you may have what?

• Tooth decay
• Oral cancer
• Cavities
• Gum disease or gingivitis

Eustachian tubes do what?

• Regulate body temperature
• Filter air pollutants
• Equalize air pressure
• Produce earwax

Vestibule has what responsibility in your ear?

• Maintaining balance and spatial orientation
• Filtering foreign particles
• Producing earwax
• Detecting sound waves

What is unique about the integumentary system?

• it has the largest organ as part of it

• It produces the most movement in our body

• It helps digest certain foods

• It itself send alerts to the brain through nerves

What is the thick part of the skin called?

• dermis
• subcutis
• hypodermis
• epidermis

What is the relationship between you epidermis and hair?

• Hair is derived from the epidermis.
• Hair is a type of skin infection.
• Hair is a separate organ from the epidermis.
• Hair is a product of the dermis.