BT-Unit 210 -P1

How may skin Layers?

• 4

• 8

• 3

• 2

The outermost layer of the skin, composed primarily of dead, keratinized cells, is called the:

• Dermis

• Hypodermis

• Epidermis

• Sebum

1. Sweat glands are primarily responsible for:

• 1. Producing oils to lubricate the skin and hair

• 1. Regulating body temperature through the evaporation of sweat

• 1. Providing sensory information about touch and pressure

• 1. Creating a barrier against harmful substances

1. Melanin, the pigment that determines skin color, is produced by cells called:

• 1. Keratinocytes

• 1. Melanocytes

• 1. Adipocytes

• 1. Langerhans cells

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1. The layer of skin containing connective tissue, blood vessels, and hair follicles is called the:

• 1. Epidermis

• 1. Dermis

• 1. Hypodermis

• 1. Stratum corneum

1. Keratin, the main protein component of hair, is also the primary component of:

• 1. Sebum

• 1. Melanin

• 1. Collagen

• 1. Sweat

Outside layer of hair

The big organ is

Which layer of the skin is responsible for producing oils to lubricate the skin and hair?

• Epidermis

• Dermis

• Hypodermis

• Sebum

1. What is the primary function of Langerhans cells in the skin?

• 1. Producing melanin

• 1. Regulating body temperature

• 1. Providing sensory information

• 1. Protecting against harmful substances