Chapter 2: Integumentary System

Question 1

Parts of the Integumentary system (part 1)

Answer 1

largest of your body, about a month for new skin, hands, and feet have thicker skin (strata), eyelids have most thin skin

Question 2

parts of the integumentary system (part 2)

Answer 2

nails – grow faster in men than women

Question 3

parts of the integumentary system (part 3)

Answer 3

Hair – 150 strands of hair shed every day

Question 4

parts of the integumentary system (part 4)

Answer 4

Glands – both sweat and oil glands

Question 5

parts of the integumentary system (part 5)

Answer 5

sensation – neurons in our skin (senses), touch, pressure, and temperature

Question 6

functions of the integumentary system (part 1) and name specific parts of this function

Answer 6

1. protection
   – Barrier to virus and bacteria – oil presents bacteria growth
   – Waterproof, can’t get in or out other than sweat
   – UV rays protection, darker skin protects better than lighter skin
   – Immune cells, inside of skin, waiting to kill bacteria
   – Add us a cushion, few abrasions
   – Hair insulates us, protects against UV rays, eyebrows
   – Nails protect parts of body that come in contact with things

Question 7

functions of the integumentary system (part 2)

Answer 7

2. sensation
   – Pain
   – Temperature
   – Pressure
   – Movement of hair
   – Touch

Question 8

functions of the integumentary system (part 3)

Answer 8

3. Temperature.
   – sweating
   – Open and close – protects from cold/radiate heat. Temperature regulation.

Question 9

functions of the integumentary system (part 4)

Answer 9

4. excresion
   - sweat

Question 10

parts of the integumentary system (part 5)

Answer 10

5. production in storage of nutrients
   – Vitamin D fat soluble (stored)

Question 11

Skin layers (part 1)

Answer 11

epidermis – superficial layer of the epithelial tissue – avascular (outside layer has no blood)

Question 12

skin layers (part 2)

Answer 12

Dermis – deep layer of connective tissue – will have blood

Question 13

skin layers (part 3)

Answer 13

Hypodermis – not part of skin, loose connective tissue

Question 14

parts of the epidermis (part 1)

Answer 14

keratinocytes – most cells. Produces keratin for strength – distinct life stage – living to dead – by the time they are at the surface.

Question 15

parts of the epidermis (part 2)

Answer 15

melanocytes – contributes to skin color. Same number of melanocytes in everyone – depends on how active they are. (Black, brown, yellowish, reddish) rays cause you to produce more melanin.

Question 16

parts of the epidermis (part 3)

Answer 16

Langerhan’s– part of the immunity system – decides different (bad) cells, and leave cells to get white cells to fix different (bad) cells

Question 17

parts of the epidermis (part 4)

Answer 17

Merkel’s discs– detect touch, light, and light pressure