Intermediate School 2025

The skin is the largest organ of the body, with a total area of about 20 square feet. Which of the following is TRUE about the functions of the skin?

• permits the sensations of touch, heat, and cold

• The skin protects us from microbes and the external elements.

• helps regulate body temperature

• able to reflect UV light thus helping to slow down aging.

New skin cells are produced in this layer, these cells are healthy, plump and hydrated and packed with nutrients. What is the name of this layer found in the Epidermis?

• Stratum Corneum

• Stratum Basale

• Stratum Spinosum

• Stratum Granulosum

The dermis is located between the hypodermis and the epidermis. It is a fibrous network of tissue that provides structure and resilience to the skin. What are the important components found in the Dermis Layer?

• Elastin Fiber

• Keratinocytes

• Melanocytes

• Hyaluronic Acids

• Collagen Fiber

Skin renewal process is where new skin cell go through the same journey up through the epidermis and depending on age and lifestyle, the time it takes for a single healthy cell to migrate from the base, to the top of the epidermis, can range from how many number of days? (Base on a young and healthy adult)

• 40-50 days

• 10-14 days

• 28-40 days

• Above 30 days

• 20-28 days

This substance found within the stratum corneum act like the mortar between bricks—comprising of lipids and fatty acids which form a protective, water-proofing barrier, maintaining moisture levels within the skin. What do we call this substance?

• keratinocytes

• melanocytes

• Epidermal-Dermal Junction (EDJ)

• Ceramides

Which of the following are the characteristic of an Oily skin?

• Obvious shine particularly midway during the day

• Prone to tightness

• Blemishes & blackheads

• Visible enlarged pores

• Wrinkles and flaky patches.

Melanocytes produces skin pigment or known as Melanin. What is the major functions of Melanin?

• Helps to protect the skin against the sun and Bacteria.

• Helps to moisture and protect the skin from Environmental Aggressors.

• Determines the skin colour and helps to protect the skin by absorbing harmful UV rays

• Protect the skin against blue lights and Indoor and Outdoor pollutions

Which of the following are TRUE? We don't have solutions for certain skin concerns.....

• Dark Spots

• Vitiligo

• Eczema

• Rosacea

The Acid Mantle or Hydrolipidic Film acts as an important protective and moisture layer to our skin. What is the healthy range of this skin pH?

• pH6.5-pH7.5

• less that pH4.5

• pH4.5-pH5.5

• Above pH9

Antioxidants protect cells from damage by neutralizing free radicals and reducing Oxidative Stress. Which of the following are considered Powerful antioxidant :

• Vitamin C

• Beta-Carotene

• Vitamin E

• Calcium