Exercise 7: The Integumentary System

Question 1

The skin is also called the?

Answer 1

Cutis/Integument

Question 2

The skin constitutes _______ to ________ of total body weight.

Answer 2

15% to 20%

Question 3

The skin cover an area of about _______ or __________.

Answer 3

2 square meters or 22 square feet

Question 4

What are the 3 main layers of the skin?

Answer 4

Epidermis
Dermis
Hypodermis

Question 5

Epidermis is composed of what type of epithelium?

Answer 5

Keratinized Stratified Squamous Epithelium

Question 6

Keratinized Stratified Squamous Epithelium will continually grow, but they can maintain their thickness through the process of?

Answer 6

Desquamation

Question 7

Define Desquamation.

Answer 7

It is a natural process in which new skin cells are created as they continually slough off/ shed.

Question 8

Epithelium will arise from the _____________.

Answer 8

Ectoderm

Question 9

Dermis is composed of

Answer 9

Dense Irregular Connective Tissue

Question 10

Dermis will arise from?

Answer 10

Mesoderm

Question 11

It lies directly under the dermis.

Answer 11

Hypodermis

Question 12

The hypodermis is composed of ___________________ and ___________________

Answer 12

Areolar and Adipose Connective Tissue

Question 13

Individuals who are well-nourished have relatively thicker __________________.

Answer 13

Hypodermis

Question 14

Skin is categorized in 2. What are those categorization?

Answer 14

Thin skin and Thick skin

Question 15

Thin skin is located in all parts of the body except ____________, ______________, and ________

Answer 15

Palms
Palmar Surface
Sole

Question 16

What are the 4 strata layers of the thin skin?

Answer 16

Stratum Basale
Stratum Spinosum
Stratum Granulosum
Stratum Corneum

Question 17

What type of skin is located in the palms, palmar surface, and the sole.

Answer 17

Thick Skin

Question 18

How thick is the thin skin?

Answer 18

0.10 - 0.15 nm

Question 19

How thick is the thick skin?

Answer 19

0.6 - 0.45 nm

Question 20

Stratum Basale is also known as?

Answer 20

Stratum Germinativum

Question 21

Stratum Basale contains cells that continuously dividing as they have _______________.

Answer 21

Keratinocytes

Question 22

How many layers of cuboidal cells does stratum Basale has?

Answer 22

1 layer of cuboidal cells

Question 23

Keratinocytes contains

Answer 23

Large nucleus
Mitochondria
Golgi complex
Cytoskeleton
Rough Endoplasmic Reticulum

Question 24

Stratum Spinosum is also known as?

Answer 24

Prickle Cell Layer

Question 25

How many layers of keratinocytes are in the stratum spinosum?

Answer 25

8-10 layers

Question 26

Describe the keratinocytes in stratum Spinosum.

Answer 26

They have the same organelles as the stratum Basale but only few cells retain its ability to divide.

Question 27

.Stratum spinosum contains what kind of cell?

Answer 27

Intraepidermal macrophage cell/ Langerhans cell

Question 28

Stratum granulosum contains how many layers of flattened dead cell?

Answer 28

3-5 layers

Question 29

Keratinocytes in stratum granulosum undergoes ____________.

Answer 29

apoptosis

Question 30

It marks the transition of the superficial dead layer of skin to the metabolically active cells.

Answer 30

Stratum Granulosum

Question 31

Stratum granulosum has no keratin intermediate filaments but has ______________.

Answer 31

Keratohyalin

Question 32

Stratum Lucidum is only located in __________________.

Answer 32

Thick skin

Question 33

Stratum Lucidum has how many layers of dead keratinocytes?

Answer 33

3-5 layers

Question 34

Stratum Lucidum has high amount of _____________.

Answer 34

Keratin

Question 35

What are the 2 layers of the Dermis?

Answer 35

Papillary layer and Reticular layer

Question 36

What layer of the dermis is most superficial?

Answer 36

Papillary Layer