Ch.13- Personal Health Care

Which substance cools the skin?

• Sebum

• Melanin

• Dandruff

• Sweat

An oily secretion called sebum is produced by the _____________.

• Dermis

• Epidermis

• Subcutaneous Layer

• Sebaceous Glands

Which of the following is a risk from overexposure to UV radiation?

• Hepatitis B

• Hepatitis C

• Skin cancer

• HIV

The combination of bacteria and other particles that adhere to the outside of a tooth is called _____________.

• plaque

• periodontium

• pulp

• periodontal disease

What minerals are most important for healthy teeth?

• Phosphorus and calcium

• Iron and magnesium

• Iron and phosphorus

• Magnesium and calcium

What part of the tooth is the connective layer between the enamel and the pulp?

• Dentin

• Root canal

• Periodontal ligaments

• Gum

The ______________ is the tough white part of the eye.

• cornea

• sclera

• retina

• labyrinth

When you blink, tears move across the surface of the eyeball to...

• moisten and clean the eye.

• reduce glare from sunlight.

• give the eye time to adjust to images.

• prevent eyestrain.

Which parts of the ear are involved in balance?

• Semicircular canals and vestibule

• Round window and Eustachian tube

• Oval window and incus

• Temporal bone and cochlea

What refines the focus of an image onto the retina?

• The lens

• The sclera

• The cornea

• The choroid