Question 1

What are the two main layers of the skin?

Accepted Answer

The two main layers of the skin are the epidermis (outer layer) and the dermis (inner layer). Some texts also reference the subcutaneous layer (hypodermis) beneath these.

Question 2

What is the deepest layer of the epidermis called, and what is its primary function?

Accepted Answer

The deepest layer of the epidermis is the stratum germinativum (stratum basale). It is responsible for producing new skin cells through mitosis.

Question 3

Which layer of the epidermis is also called the 'horny layer' and consists of dead, flattened cells?

Accepted Answer

The stratum corneum is called the horny layer. It is the outermost layer of the epidermis and is composed of dead, keratinized cells that are continuously shed.

Question 4

What is the dermis, and which two sublayers does it contain?

Accepted Answer

The dermis is the deeper, thicker layer of skin beneath the epidermis. It contains the papillary layer (upper) and the reticular layer (lower), and houses blood vessels, nerves, and hair follicles.

Question 5

What pigment gives skin its color, and in which layer of the epidermis is it produced?

Accepted Answer

Melanin gives skin its color. It is produced by melanocytes located in the stratum germinativum (basal layer) of the epidermis.

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