03 The Integumentary System Free Online FlashCards

Which structures make up the integumentary system?

The integumentary system includes the skin and its accessory structures: hair, nails, and glands.

What are the skin’s two main layers?

The epidermis is the outer layer; the dermis is the deeper connective-tissue layer.

Where is the hypodermis, and what does it contain?

The hypodermis lies beneath the skin and contains connective tissue and fat.

How does the epidermis help protect the body?

The epidermis helps limit water loss and blocks many microbes and harmful substances.

How does melanin help protect the skin?

Melanin, a pigment made by cells in the epidermis, helps protect against ultraviolet radiation.

Which structures are found in the dermis?

The dermis contains blood vessels, glands, hair follicles, and sensory nerve endings.

How does sweating help cool the body?

Sweat evaporates from the skin and carries heat away, helping cool the body.

How does skin vasodilation help release heat?

Vasodilation widens blood vessels in the skin, increasing surface blood flow and allowing more heat to escape.

How does skin vasoconstriction conserve heat?

Vasoconstriction narrows skin blood vessels, reducing surface blood flow and conserving heat.

Which systems work with the skin to regulate body temperature?

The skin works with the nervous and circulatory systems to help control body temperature.

What sensations can skin receptors detect?

Skin receptors and nerve endings detect touch, pressure, vibration, temperature, and pain.

Where do skin sensory signals travel for interpretation?

Sensory nerves carry signals to the brain and spinal cord, which interpret the information and coordinate responses.