Lab 5

Question 1

Epidermis mainly made of

Answer 1

Keratinized stratified squamous epithelium

Question 2

Dermis made of

Answer 2

Connective tissue

Hair follicles

Glands

Sensory receptors

Question 3

Hypodermis does

Answer 3

Attaches skin to underlying tissues

Provides insulation

Question 4

Most of cells in epidermis are

Answer 4

Keratinocytes

Question 5

Melanocytes

Answer 5

Produce melanin

Question 6

Thick skin

Answer 6

Five layers

Found in fingertips, Palms of the hands, soles of feet

Question 7

Thin skin

Answer 7

Four strata

Covers rest of body

Question 8

Layers of thin skin

Answer 8

Stratum corneum

Stratum granulosum

Stratum spinosum

Stratum basale

Question 9

Thick skin layers

Answer 9

Stratum corneum

Stratum lucidum

Stratum granulosum

Stratum spinosun

Stratum basale

Question 10

Stratum corneum

Answer 10

Dead cells

Protection

Question 11

Stratum lucidum

Answer 11

Translucent layer of cells

Question 12

Stratum granulosum

Answer 12

Keratin formation begins in this layer and cells begin to die

Question 13

Stratum spinosum

Answer 13

Cells get spiny look

Question 14

Stratum basale

Answer 14

Cells rapidly multiplying

Question 15

Layers of dermis

Answer 15

Papillary layer

Reticular layer

Question 16

Papillary layer

Answer 16

Bumpy

Loose connective tissue

Tactile corpuscles

Question 17

Tactile corpuscles

Answer 17

Receptors for touch

Numerous in lips, fingertips, eyelids

Question 18

Reticular tissue

Answer 18

Dense irregular connective tissue

Lamellated connective tissue

Question 19

Lamellated corpuscles

Answer 19

Deep pressure and vibration receptors

Question 20

Hypodermis

Answer 20

Made of adipose tissue and areolar connective tissue

Question 21

Types of sweat glands

Answer 21

Escribe sweat glands

Apocrine sweat glands

Question 22

Eccrine sweat glands

Answer 22

Numerous in hands, feet, forehead

Ducts pass to surface of skin

Question 23

Apocrine sweat glands

Answer 23

Found in axillary and anogenital regions

Secrets product into hair follicles

Question 24

Hair is composed of

Answer 24

Keratin

Question 25

Sebaceous glands

Answer 25

Secrete sebum onto hair

Question 26

Sebum

Answer 26

Protects and lubricates hair

Question 27

Rule of nines

Answer 27

Burns with 20% or more are life threatening

Question 28

First degree burns

Answer 28

Only epidermis Redness Heals in one week No scarring

Question 29

Second degree burn

Answer 29

Epidermis and part of dermis Accessory structures intact Blistering 2 weeks to 2 months Some scarring may occur

Question 30

Third degree burn

Answer 30

All the way to hypodermis and tissues beneath Painless Healing cannot occur Skin grafting usually required Infections likely and life threatening

Question 31

Basal cell carcinoma

Answer 31

Most common Stratum basale Rarely spreads Small shiny bump

Question 32

Squamous cell carcinoma

Answer 32

Stratum spinosum Can spread to lymph nodes Lesions are raised reddened and scaly

Question 33

Malignant melanoma

Answer 33

Most deadly Often arises from the melanocytes of a pre-exsisting mole Spreads quickly and drug resistant