Week 8- Integumentary System

Question 1

What are the 3 layers of the skin from most external to internal?

Answer 1

1. Epidermis
2. Dermis
3. Subcutaneous layer

Question 2

a thin, cellular membrane layer that contains keratin

Answer 2

Epidermis

Question 3

dense fibrous connective tissue layer that contains collagen

Answer 3

Dermis

Question 4

a thick, fat-containing tissue

Answer 4

Subcutaneous layer

Question 5

The ______ LACKS blood vessels, lymphatic vessels or connective tissue so it is dependent on the deeper ________ and its rich network of capillaries for nourishment

Answer 5

Epidermis; dermis layer

Question 6

the epidermis is composed of ___________ that are flat and scale-like

Answer 6

squamous epithelium

Question 7

The deepest layer of the epidermis is the ________ layer; cells here are constantly growing and multiplying and are the source of all the other cells in the epidermis

Answer 7

basal layer (stratum basale)

Question 8

most superficial layer of the epidermal layer

Answer 8

stratum corneum

Question 9

melanocytes are contained in what layer of the epidermis?

Answer 9

basal layer

Question 10

what cells contain melanin?

Answer 10

melanocytes

Question 11

what skin pigment is more common and is a brown-black pigment

Answer 11

Eumelanin

Question 12

what skin pigment is a red-yellow pigment seen in people with lighter skin

Answer 12

Pheomelanin

Question 13

a protein that is elastic and helps skin to return to its original position when pinched or poked

Answer 13

elastin

Question 14

a fibrous protein found in bone, cartilage, tendons and ligaments and skin; it is tough and resistant but also flexible

Answer 14

collagen`

Question 15

_______ cells are predominant in the subcutaneous layer

Answer 15

Adipocytes (fat cells)

Question 16

semilunar whitish region at the base of the nail plate - it can generally be seen in the thumbnail of most people

Answer 16

Lunula

Question 17

soft tissue surrounding the nail border

Answer 17

Paronychium

Question 18

what layer are sebaceous glands located?

Answer 18

dermal layer of the skin

Question 19

the most common type of sweat gland, originate deep in the dermis and straightens out to extend up through the epidermis

Answer 19

Eccrine sweat glands

Question 20

active only from puberty onward and larger in size; are found concentrated in the area of reproductive organs and axilla;

Answer 20

Apocrine sweat glands

Question 21

Perspiration is controlled by the__________ nervous system

Answer 21

sympathetic

Question 22

bluish-purple mark (bruise) on the skin that are caused by

hemorrhages into the skin after injury

Answer 22

Ecchymosis

Question 23

mall, pinpoint hemorrhages

Answer 23

Petechiae

Question 24

absence of hair from area where it normally grows

Answer 24

alopecia

Question 25

itching - common symptom a/w most forms of dermatitis and other conditions as well

Answer 25

Pruritus