Chapter 5: The Integumentary System

Question 1

What organs are included in the integumentary system?

Answer 1

Skin, hair, nails, various glands, sensory receptors (most outter appearance body system)

Question 2

List some function of the skin.

Answer 2

Protect against;
-dehydration
-Impact and friction
-mole and bacterial invasion
-UV light damage 
Receptor for sensory input
Secrets wastes
Regulates body temperature 
Synthesizes vitamin d form cholesterol molecules

Question 3

What are the 4 types of cells within the epridermis?

Answer 3

1. Keratinocytes
2. Melanocytes
3. Dendritic
4. Tactile

Question 4

Skin color is determined by 3 pigments, what are they?

Answer 4

1. Melanocytes
2. Carotene
3. Hemoglobin

Question 5

What is the function of the arrest or pili muscle?

Answer 5

Raise the hair when cold or freightened

Question 6

What is the function of pacinian corpuscle?

Answer 6

Deep touch receptors

Question 7

What Structure is reposnsible for light touch sensations?

Answer 7

Meiseners corpuscles

Question 8

What substance is produced at the sebaceous gland of the hair follicle?

Answer 8

Sebum.

Question 9

What is the regular body temperature?

Answer 9

37 +/- 0.5

Question 10

What is the limit for life temperature?

Answer 10

43

Question 11

What is the function of sebum?

Answer 11

Soften and lubricate the hair and skin

Question 12

What are the 4 mechanisms of heat trasnfer?

Answer 12

1. Radiation
2. Conduction
3. Convection
4. Evaporation

Question 13

What 2 layers is the skin composed of?

Answer 13

Epidermis and dermis

Question 14

What is the subcutaneous of teh skin called?

Answer 14

Hypodermis

Question 15

Which type of cell produced keratin and protects the underlying tissues of the skin?

Answer 15

Keratinocytes

Question 16

What is the function of tactile cells in the skin?

Answer 16

Sensory neutron and function in touch sensations

Question 17

Which type of skin cell paticpates in immune responses?

Answer 17

Dendritic Cells

Question 18

What is the function of melanocytes?

Answer 18

Secret and transfer [igment melanin to kertinocytes

Question 19

Generally how thinck is the skin?

Answer 19

1-2mm

Question 20

Where on teh body is no hair follicles located?

Answer 20

Palms, soles, lips, eyelids, nipples, head of penis

Question 21

How much sweat s usually released in a day?

Answer 21

600ml/day

With heat = 12 L/day

Question 22

What is the role of sweat/sweating?

Answer 22

Regulate body temp and waste elimination

Question 23

What makes body odour?

Answer 23

The secretion of organic components are decomposed by bacteria on the skin

Question 24

Sebaceous glands use which type of secretion?

Answer 24

Holocrine secretion

Question 25

Stretch marks are a result of what?

Answer 25

Tearing of the dermis

Question 26

What is the average core body temperature?

Answer 26

37 +/- 0.5

Question 27

Decreased body temperature results in _____.

Answer 27

Shivering

Question 28

Bassal dialation and sweating occurs when ______.

Answer 28

The body temperature is increased.