14.3 The Skin

Front

What is the primary function of the skin?

Back

The primary function of the skin is to act as a barrier protecting the body from external factors such as pathogens, chemicals, and physical injuries.

Front

What are the three main layers of the skin?

Back

The three main layers of the skin are the epidermis, dermis, and subcutaneous layer (hypodermis).

Front

What is the role of the epidermis?

Back

The epidermis is the outermost layer of skin that constantly sheds and is replaced by new cells. It provides a protective barrier.

Front

What is the function of the dermis?

Back

The dermis nourishes the skin and contains connective tissue, blood vessels, and nerve endings.

Front

What happens to the body without skin?

Back

Without skin, internal organs and tissues would be exposed, leading to a high risk of infection and dehydration.

Front

What is a severe bruise and how does it relate to skin burns?

Back

A severe bruise is a type of injury that does not cause burns to the skin; it results from damage to blood vessels under the skin.

Front

What is the significance of skin shedding?

Back

Skin shedding is significant as it helps remove dead skin cells and allows for the regeneration of new cells, maintaining skin health.

Front

How does the skin protect against infection?

Back

The skin acts as a physical barrier, preventing pathogens from entering the body and contains immune cells that help fight infections.

Front

What are the sensory functions of the skin?

Back

The skin contains nerve endings that allow it to sense touch, temperature, pain, and pressure.

Front

What is the role of sweat glands in the skin?

Back

Sweat glands help regulate body temperature through the process of sweating and also assist in excreting waste products.