Integumentary system

Question 1

What is the integumentary system?

Answer 1

Set of organs that forms external covering of the body

Question 2

What does the integumentary system protect the body from?

Answer 2

Infections, desiccation, abrasion, chemical assault, radiation damage

Question 3

What does the integumentary system consist of?

Answer 3

Hair
Nails
Skin
Glands

Question 4

The skin is composed of how many layers? What does each layer have?

Answer 4

3
Nerves that recognise different sensations in each layer

Question 5

What is the epidermis?

Answer 5

Top layer of the skin, thinnest layer
Can be seen & touched

Question 6

What is the epidermis made up of? How many cells are within this?

Answer 6

Epithelium
4 main types of cells
-Keratinocytes
-Melanocytes
-Langerhans cells
-Merkel cells

Question 7

What is the dermis?
What does it contain?

Answer 7

Middle layer of the skin
Thickest layer
Contains sweat & oil glands & hair follicles

Question 8

What is the hypodermis?
What does it do?

Answer 8

Bottom layer of the skin
Fatty layer that helps insulate the body.

Question 9

What do nails do?

Answer 9

Protect the ends of fingers and toes

Question 10

What is the anatomy of a nail? (5 things)

Answer 10

Nail plate
Nail bed
Cuticle
Matrix
Lunula

Question 11

What is the nail plate?

Answer 11

Hard part of nail that can be seen

Question 12

What is the nail bed?

Answer 12

Skin under the nail plate

Question 13

What is a cuticle?

Answer 13

Thin skin at base of nail

Question 14

What is the matrix?

Answer 14

Root of the nail, responsible for making it grow

Question 15

What is the lunula?

Answer 15

White, moon - shaped part of nail plate

Question 16

What does hair on the head do?

Answer 16

Keeps heat in the body

Question 17

What do eyebrows & eyelashes do?

Answer 17

Protect eyes from dirt & water

Question 18

What protein is hair made out of?
What does this protein do?

Answer 18

Keratin
Maintains growth

Question 19

The hair is made of 3 parts, what are these?

Answer 19

Shaft
Follicle
Bulb

Question 20

What is the hair shaft?

Answer 20

Part of the hair that can be seen & touched

Question 21

What is the hair follicle?

Answer 21

Tube like structure that keeps hair in skin

Question 22

What is the hair bulb?

Answer 22

Located under the skin, responsible for growth

Question 23

What are hair erector muscles connected to?

Answer 23

Our hair follicles and skin.

Question 24

What happens when the hair erector muscles contract?

Answer 24

Hair stands up
We see goosebumps when these tiny muscles contract.

Question 25

Where are glands found?

Answer 25

Throughout the skin

Question 26

What materials do glands release?

Answer 26

Water, oil, salt from under the skin to the surface

Question 27

How many glands are in the integumentary system? What are these?

Answer 27

3
Sudoriferous
Ceruminous glands
Mammary glands

Question 28

What do sudoriferous glands do?

Answer 28

Secrete sweat through the skin

Question 29

What do ceruminous glands do?

Answer 29

Secrete ear wax

Question 30

What do mammary glands do?

Answer 30

Produce milk after giving birth

Question 31

What are some common skin disorders?

Answer 31

Fungal infections i.e. ringworm
Bacterial infections i.e. Impetigo, Cellulitis
Pressure ulcers
Burns

Question 32

What do eccrine glands do?

Answer 32

React to heat & produce secretions