Integumentary System

The integumentary system is:

• ...an organ system that is the body's first line of defense against the outside world.

• ...a series of blood vessels caring blood throughout the body.

• ...a group of nerve cells that carry electrical impulses throughout the brain.

• ...a series of tubes that carry food through the body to be metabolized.

The base foundation of the integumentary system is _______.

• blood

• muscle

• skin

• bone

The largest organ in the body is _________.

• brain

• heart

• large intestine

• skin

How many major layers of skin are there?

• 1

• 3

• 6

• 11

The outer layer of skin is called the __________.

• dermis

• hypodermis

• superdermis

• epidermis

A hair grows in a pouch called the _______, which is embedded in the skin.

• hair follicle

• hair sac

• hair pocket

• hair gland

What gland secretes sweat, in an attempt to cool the body?

• sebaceous gland

• prostate gland

• sweat gland

• thyroid gland

What material lies within the dermal layer of the skin, and allows the skin to be flexible and shock-absorbing?

• bone

• collagen

• fat

• muscle

How often are your outer skin cells completely replaced?

• every hour

• every 7 days

• every 4 weeks

• once a year

Which of the following would NOT be considered part of an integumentary system?

• feathers on a bird

• hooves on a horse

• scales on a fish

• lungs in a frog